Question: Why are the elite having difficulty in accepting truths?

Answer: In every period of history, as well as today, there exists an oligarchical minority who try to suppress people who think differently from them and who are not one of them. They wish to design the world according to their own will.

Defending rights

It is wrong to imagine that they can always dominate the society. There have been times, particularly during periods when religious and moral thought prevailed in the true sense, when they regressed and were condemned to remain in a narrow sphere. However, even when they had to withdraw, it is a reality that they retained their thoughts about enslaving society, and moreover, they kept on developing new projects and plans with the aim of moral destruction. When they gain the opportunity, they invade all areas of life, resort to brutal force and smash everyone who does not side with them.

However, this situation should not be solely attributed to their obstinacy and oppression. Other factors such as the heedlessness and negligence of the masses, the failure of virtuous people who could actually struggle against them to maintain a spirit of togetherness, and their acting without any forethought or plans, also play an important role in the emergence of this tyranny. Actually, seeing every trouble and hardship we suffer as a consequence of our own mistakes and wrongs is a piece of advice from the Qur’an. God Almighty, may His glory be exalted, states in the Qur’an: “Whatever affliction befalls you, it is because of what your hands have earned, and yet He overlooks many (of the wrongs you do)” (ash-Shura 42:30).

The late poet, Mehmed Akif, said that the sole true owners of right in this world were those who speak up for defending their rights. In this regard, merely shouting and making a fuss in the face of oppression and the violations of the oligarchical elite will not yield positive results. On the contrary, it is necessary to struggle by means of reason and logic. If we have been unable to defend certain rights, we must make every possible effort to reclaim them. The right to live humanly must be reclaimed by endeavoring within a legal framework of law and justice.

The powerful voice of truth

Just as it happened yesterday, today, the people who control the capital, power, government and certain high positions look down on the rest of the people as if looking down to the ground, and they see themselves as being so high up, as if they are looking at the firmaments. In our present time, their number has become so large that even calling them an oligarchical minority will not suffice. Surely, their power bears no importance against the strength and power of God Almighty and does not really mean anything for those who seek refuge in Him. The void that appears as a result of our inactivity and weakness is what makes power more meaningful, and the oligarchical minority is using that power against us.

It is not correct to think that such elites that leech off the people will always remain in such a position. One day, there may appear some among them who regret the oppressions they have committed, who become sincerely repentant, who change their feelings and thoughts, and prefer to live in a human way. We can see so many examples of this during the Prophet’s time. Although at the beginning of Islam, the majority of the believers were poor people—such as Bilal al-Habashi, Ammar ibn Yasir, and Abdullah ibn Masud—who worked near the controllers of wealth and power, the leading personalities of Mecca also came to be included in this blessed circle in later years.

By studying the identities of the people who accepted faith first and formed the center, it is possible to make some psycho-sociological analyses. For example, you can say that they had been seeking a savior to save them from the negative life conditions they were experiencing, and when they saw the prince of the Prophets with his truthfulness, decency, Prophetic intelligence and resolution, they ran to him with the intention of seeking refuge in him. Or, by considering that those people owned very few worldly possessions and did not have much to lose, you may think that it was easier for them to dedicate their lives to the path of God. You may also think that the Messenger of God’s treating those oppressed people with his immense compassion, opening his bosom for them and supporting them was a factor in their speedy acceptance of Islam. Additionally, you might also interpret the fact that people in abject poverty followed such an infinite light as a result of Divine guidance. However, no matter which factor you ascribe this result to, you see that the majority of the heroes that formed the first rank of Muslims were poor people disdained by those prominent in society.

However, there came the day when those prominent people, who accosted the Muslims at every opportunity and tried to smash them, also joined their ranks. For example, during the sixth year of Islam, the unpleasant invectives against the noble Prophet tugged at the humane feelings of Hamza, who took a stance against the polytheists in return. Abu Sufyan, who was unparalleled in obstinacy, took his place near the Messenger of God, peace and blessings be upon him, after the conquest of Mecca. Like him, so many leading figures from among the polytheists submitted to the truth and changed sides later on.

Nobody should be deprived of the goodness

On account of the reasons we mentioned so far, from the oligarchical minority who in their imaginations see themselves at the uppermost level of the caste system and behave as if it were their essential right to oppress others, God knows what potential heroes may appear and may lend you a hand with your ideal of establishing universal values. Even today, it is possible to say that its signs can be seen—not as showers but rather like dewdrops on leaves. There are people who have ample worldly means, seen by some as being at the uppermost level of their imagined caste system, who see themselves as having a distant worldview from you and whom you do not see as likely to share your ideals; when they witness the beautiful things you do, they may support the activities on the path of humanity and peace. You may see that some of them want to open a school somewhere, others wish to sponsor a university to be opened somewhere, while others want to provide a field for a new educational institution to be opened. As they also set an example for others with such services, those who see this will also wish to do the same.

Therefore, the duty that falls to us is taking care of all individuals in society without making any distinction. The thought that the reformation can only be carried out by poor or middle class people is not correct. These people may have welcomed the good things done and have opened the doors of their hearts wide from the very beginning. You may rather have spent time with them at the beginning. However, on account of the great scope of the tasks needed to be done for the sake of humanity today, it is necessary to spread our wings wide, and try to reach every place and every person. For this reason, it is necessary to make efforts to include those who have worldly means and look down on others. However, while making this effort, you should not forget that in order for them to accept the values you believe, although a single day or week may suffice for some, for some of them it may be necessary to make visits for a month or even a year.

Who knows how many times the Messenger of God, peace and blessings be upon him, knocked the door of Abu Jahl and communicated his message to him? Without getting angry or feeling bitter, he made use of every opportunity and tried to make him feel the truths of faith. Note that Abu Jahl was one of the prominent figures of the Banu Makhzum tribe. Those days, the Messenger of God, peace and blessings be upon him, did not solely make visits to Abu Jahl, but also went to all the leaders of Mecca time and time again; he presented his message to them without growing weary or being broken down. Although Abu Jahl was not honored with faith, a day came when his son Ikrima accepted faith before the beneficence and compassion of God’s Messenger, peace and blessings be upon him.

In this regard, it is necessary to utilize every opportunity to reach all sections of society and to advance with alternatives. It is necessary to knock on everybody’s door without becoming weary, giving in to hopelessness, or feeling broken.

Brittlestars form a large group of sea animals that are similar to starfish. There are more than 2,000 species of brittlestars. However, this article will focus on two of them, Ophiocoma pumila (Figure 1a) and Ophiocoma wendtii (Figure 1b). In spite of their similar appearance, these two kinds of brittlestars have one main difference. While O. pumila is insensitive to light, O. wendtii is highly light sensitive. For example, the latter has different colors at day and night, as shown in Figure 1b, left and right respectively. More interestingly, O. wendtii can sense shadows of predators and quickly move into dark areas such as a cave or underneath a rock.

To understand the mechanisms behind the difference in light sensitivities of these two species, Joanna Aizenberg and her colleagues investigated1 the microstructure of both brittlestars’ outer skeletons with an electron microscope and came up with a striking result: The top surface of O. wendtii’s skeleton has very well ordered lens-like hemi spherical elements (Figure 1f). The cross section image of one of those hemispheres actually looks like a compound lens made up from two hemispheres with different diameters (Figure 1g). On the other hand, O. pumila’s skeleton had a typical stereom (sponge-like calcite) structure (Figure 1e). These images strongly suggest that the lenses in O. wendtii’s skeleton are responsible for the relatively high light sensitivity. However, understanding how that really happens require further investigation.

It is well-known that spherical lenses suffer from a problem called “spherical aberration,” which means that the light rays that are closer to the optical axis are focused at a different point than the ones that are away from the axis. A quick solution to this problem is to use two lenses, whose diameters have a certain ratio, back to back; this helps to correct the aberration originating from the first one with the second one. Interestingly, when Aizenberg et. al. calculated1 the optimum compound lens configuration for O. wendtii’s skeleton, which has the minimum aberration, their result matched the original lens structure perfectly (the orange outline in Figure 1e). They were also able to locate the focal point of these lenses (d = 4-7 um* below the lens) with the same method. Their further electron microscopy studies showed optically sensitive nerve bundles exactly at that location. All these results clearly show that O. wendtii’s skeleton has the perfect geometry to collect and focus light to improve its light sensitivity. However, there is one big question about these lenses: their material.

Calcite, a kind of calcium carbonate (CaCO3), is a common ingredient of the shell or the skeleton of marine organisms. Interestingly, the birefringence property of calcite makes it very unfavorable as a lens material. In a birefringent material the speed of the light depends on the direction it travels with respect to the crystallographic axes of the material. As a result, if one looks through it, they will observe a doubly refracted image (Figure 2). Being the most famous example of birefringent crystals, calcite’s refractive index is 1.64 parallel to one crystallographic axis and 1.49 in the perpendicular direction. Therefore a regular calcite lens cannot focus light on a single spot, unless it is oriented along a special crystallographic axis (c-axis to be specific), which would be along the diagonal of the prism in Figure 2.

At this point we are not surprised to learn that the optical axis of the O. wendtii’s lenses, and the c-axis of the calcite crystal that they are made of, indeed overlap. We are not surprised because we already had a strong feeling that these lenses should work. However, it is quite surprising that these little creatures can grow single crystals of calcite with a specific crystallographic orientation. As Kenneth Towe states in the context of a similar study, “This precise orientation of crystals is the big mystery of biomineralization. Organisms know how to do it; we do not yet know how they know.”3

Biomineralization, the controlled deposit of inorganic minerals by living organisms, is a very active research field attracting many scientists from various disciplines, including biology, physics, chemistry, and material science. In general, controlling crystal structures at small length scales is a very challenging task. Scientists spend millions of dollars to build state-of-the-art facilities for single crystal materials synthesis. They work in clean rooms, under an ultra high vacuum and at extremely high temperatures. On the other hand, from brittlestars to large whales, almost all living creatures have biominerals, such as bones and shells, manufactured in chemically dirty environments and at decent temperatures. Organisms are apparently equipped more efficiently than our laboratories are.

A. Ali Eren has a Ph.D. in Physics and lives in the USA. He studies physical chemistry of biological processes.

References

*1 um (micron) is one thousandth of a millimeter. Human hair is approximately 100 micron thick.

1. Aizenberg, Joanna, et al. “Calcitic microlenses as part of the photoreceptor system in brittlestars.” Nature 412.6849 (2001): 819-822.
2. ttp://jademellor.com/blog/2013/6/21/rainbow-rhombus, accessed 4/20/2014
3. Towe, Kenneth M. “Sea urchins as crystallographers.” Science 311.5767 (2006): 1554-1555.

Only 0.15 % of the energy that reaches the earth is used by the plants and the algae as a source of energy for photosynthesis. The energy that is stored in the form of chemical energy within the photosynthetic plants establishes the source of energy for the food that is consumed by the creation. The past creation, as a result of the physical-chemical processes, was fossilized and solar power has been stored in the form of fossil fuels (oil, coal, natural gas).

Energy consumption and the environment

Energy consumption is viable for every form of work; the waste is what remains in the environment. This waste does not pose a problem as long as they do not damage the sensitive ecologic balance. However, rapid industrialization and urbanization, which lead to excessive amounts of energy consumption, result in environmental problems. Since industrialization-urbanization is directly related to energy consumption – particularly with fossil fuels – industrialized countries are more vulnerable to experiencing environmental problems. In today’s world, it is climatic change – a product of global warming – among these problems that is of the greatest global importance.

The increase in the proportion of carbon dioxide, a greenhouse gas, in the atmosphere is the main factor for global warming. This increase is directly related to the consumption of fossil fuels. The rays of the sun, which are reflected from the earth, are trapped by carbon dioxide gases (chlorofluorocarbon, nitrous oxide and other greenhouse gases, such as water vapor) in the atmosphere, and they can not return to space. This, in turn leads to the atmosphere heating up (the greenhouse effect), eventually leading to an increase in heat throughout the world.

The main reason for the increase of carbon dioxide in the atmosphere is the consumption of fossil fuels (77%) and the decrease in the number of forests (23%). Coal gas is normally the last product of the anaerobic processes in nature. In recent years human intervention played the main role in this abnormal increase in gases. Playing an important part in this process is the expansion in rice fields (38%) in order to feed the increasing population, natural gas extraction and its transfer (16%), an increase in the number of cattle (14%), coal mining (12%), and the oxidation of produced biomass (6%). Chlorofluorocarbon is included in industrial products. As for the nitrous oxides, they are the by-products of reactions in the nitrogen cycle in nature. In recent years, as a result of the increase in the use of the nitrogenous manures (85%), forest fires and other fires (11%), and the oxidation of the produced biomass (7%) there has been a rise in nitrous oxide. Consequently, the rapid increase in greenhouse gases in the last years has lead to a 0.5°C increase in the average heat of the earth.

If the greenhouse gases continue to be accumulated at this speed, then by 2100 the average heat of the earth will record an increase of 2–4°C compared to the period before industrialization. Eventually, there will be a greater melting of the glaciers at the poles, which will lead to 0.5–1.5 % increase in sea level. Thus, residential areas by the seaside, agricultural areas, wetlands and industrialized areas will face the danger of being flooded. Moreover, the risks of climatic changes and desertification will become much more severe.

Some countries are investigating how to calculate the probable effects of a decline in water, food and energy resources and what precautions need to be taken accordingly as a result of global warming. In this sense, the problem was clearly indicated during the summit meetings in Vienna (1985), Rio (1982), and Kyoto (1997), however, they have not been sufficient to provide a solution.

Another important problem arising from the overuse of fossil fuels is the damage to the environment caused by air pollution and acid rain. During the consumption of fossil fuels, CO2, NOx, and SOx are emitted into the atmosphere and these, combining with water vapor, lead to the formation of carbonic acid (H2CO3), nitric acid (HNO3) and sulfuric acid (H2SO4). While normally the pH of rain water is 5.5–6, with these acids it falls down to 3.5–4. This and the resultant dissolution of the metals in the water pose a threat for both the land and the aquatic ecosystems (e.g. a decline in fish species in many lakes) and impair the ecologic balance.

The impact of alternative and renewable energy on the environment

The negative impact of fossil fuels on the environment and the decline in their reserves has accelerated the search for new energy resources. Even though nuclear energy is not a renewable resource, today it has come to be regarded as an alternative energy resource all around the world. Hydrogen, too, is another growing alternative resource. Geothermal energy is also a renewable energy resource, yet it is mostly restricted to the region where it originates.

With current technology, it costs us more to use solar energy rather than to extract fossil fuels. Moreover, there is a great need for the development of new technology that is aimed at producing wind, hydroelectric, bio-energy, tidal and wave energy in the most efficient way at the lowest cost.

Defeated by their ambitions, human beings, particularly in the last century, have destroyed the world and the environment that has been entrusted to them. Since the global impact and the cost of this process only emerged recently, it was too late before human beings realized that they needed to shift from energy systems based on fossil fuels. All the worries and concerns that have surfaced today is not because we have finally realized that the earth has been entrusted to human beings, but simply because the future seems to be promising nothing but destruction. Thus, the real solution to the problems is not related to acting to find a solution to the problems, but rather in being in compliance with the measures of the actual Owner of the world and the universe and avoiding form all types of extremism.

References

• Spiro Thomas G. and Stigliani William M. 1996. Chemistry of the Environment, Prentice Hall, Upper Saddle River, New Jersey, USA.
• Godish Thad. 1997. Air Quality, CRC Lewis Publishers, Boca Raton, New York.
• World Energy Outlook. 2004. International Energy Agency.

When we have been sitting or lying for a long time we can suffer from orthostatic hypotension due to an insufficient operation of the sympathetic nerves.

When we are lying down, the blood pressure in our arteries is pretty much equal throughout the body. When we stand up, the blood pressure is affected by the gravity and increases in the vessels under the heart, while decreasing in the brain. If we lie down again, the blood pressure in the arteries balances once again. If these changes cannot be naturally controlled, then we may suffer an increase or decrease in blood pressure, which could result in a fatal injury.

There are baroreceptors in the walls of main arteries whose tasks are to measure constantly the blood pressure and to send data (electrical signals) to the brain, informing it about the blood pressure in the body. These baroreceptors are located in the aorta as it leaves the heart and in the carotid artery as it enters the brain. With the onset of hypertension, the frequency of the signals that are sent to the brain increases and this drops in case of hypotension. The center of vessel movement in the brain, with regard to the frequency of electrical signals it receives, perceives a low or high blood pressure.

In the brain is a vasomotor center; this continuously controls the blood pressure and regulates it. This center constantly receives data about blood pressure. If the pressure decreases, the signals of the sympathetic nerve increase. If the pressure increases, the signals to the parasympathetic nerves are suppressed. As a result of sympathetic irritability, the heart begins to beat faster and stronger. It pumps much more blood in a unit of time, and thus the blood pressure increases. The arteries and veins also constrict and owing to this constriction in the arteries, the blood pressure increases further. As a consequence of constriction in the veins, the extra blood that is stored inside the veins is pumped into the heart. Now, as the heart is receiving greater volumes of blood, it works faster and contributes to the increase in the pressure. In the meantime, as a result of the suppression of parasympathetic nerve signals, the heart contracts faster and stronger, thus pumping much more blood.

As the blood pressure rises, the mechanism which is in charge of reducing the pressure via vasomotor center is triggered. While pressure is applied to the sympathetic nerves, the signals that are being sent to the heart and vessels decrease. Thus, the rate of systole and the amount of blood which is being pumped decreases. As the arteries receive less blood the volume of blood in the system falls off and as the arteries and veins expand, the blood pressure falls. Due to the dilatation in the veins, the volume of blood which is sent to the heart also decreases and as a result the heart pumps less blood and the blood pressure drops.

However, by triggering the parasympathetic nerves, the signals that are sent to the heart increase. This helps to slow the heart down and ensures that there is less blood pumping through the system. As a result, the blood pressure which has been reduced via the sympathetic system is reduced even further with the parasympathetic system. At this point, it is necessary for there to be a rapid drop in blood pressure, which is provided by the simultaneous functioning of different mechanisms.

We cannot control this system and it acts extremely rapidly and with great elegance. Even in the systole period, when the heart is pumping the blood and there is a short and sudden increase in pressure and in the diastole period, when the heart relaxes and there is a short and sudden decrease in pressure, the system is in charge and functioning at every second, operating to increase the hypotension and to decrease the hypertension. The average healthy human heart beats 70 times per minute. Consequently, there are 70 systole and 70 diastole stages every minute; thus a normal balance can be maintained by decreasing the pressure, which increases 70 times every minute, and by increasing the pressure, which decreases 70 times every minute; this is how the body maintains a normal balance. In other words, this system functions 140 times every minute. Is it possible that this system, which operates throughout our life, a system that we are not aware of, a system that is so sensitive and vital to our lives, a system the details of which have only recently been understood after centuries of observation could be nothing more than a coincidence?

The pressure regulating system mentioned above carries out other important tasks while we are sitting and standing as well. The amount of blood going to the brain is related to the maintenance of a difference in blood pressure between the arteries and veins and to the recirculation of blood. In connection with hypotension, the pressure in the veins to the brain decreases, in order to partially compensate for the decrease in the arteries. By preventing a decrease in the difference of pressure (perfusion pressure) between the two systems, the continuity of blood going to the brain can be maintained.

In addition, a small decrease in the blood going to the brain can lead to an increase in acidity and carbondioxide in the brain tissues and to a decrease in oxygen; this results in the dilatation of the blood vessels in the brain. When these systems go into action anyone who is not suffering from orthostatic hypotension will have a stable amount of oxygen consumption in the brain when they stand up, and thus not experience dizziness.

In fact, scenes from karate movies are wonderful displays of the perfect functioning of this system. In such scenes, the fighter will jump up, and then suddenly fall to the ground; he will then suddenly spring up and performs different moves. Certainly with every movement, the blood pressure changes suddenly, but as a sign of the Creator’s mercy and grace, the body is able to maintain a balance. Should not the person watching these scenes stand in amazement, thinking: “Oh my God, what an incredible order! How great is Your knowledge, power, wisdom and art!”

As mentioned at the beginning of the article with reference to an actual sad incident, when a person whose sympathetic system is not functioning normally suddenly stands up, they can suffer from dizziness and perhaps even faint due to irregular blood pressure.

For patients suffering from orthostatic hypotension patients, it is important that they do not stand up rapidly. In addition, exercises that encourage the use of leg muscles before standing up will help pump blood towards the brain.

Pause for a minute… What would happen if this miraculous system did not exist? Consider how much time it would take you to merely get out of bed every day!

Around 4–5 billion years ago (bya) my formation began from the remaining matter after the creation of the sun. In time, this matter accumulated and formed the small planetary objects (planetesimals) which were the earlier forms of future’s giant planets. Our collisions continued with the planetesimals that orbited the sun. As a result of these continuous collisions and bombardments, my surface temperature raised to almost 6,000oC. What I am trying to say is that I was an enormous globe consisting mainly of metallic substances that were melted in boiling lava and showered by thousands of meteoroids and comets. God the Creator has hidden many messages of mystery regarding the entire process I endeavored for humans to discover.

When I began to cool down, my surface hardened like a shell, and because I was not yet sufficiently protected by the gaseous shield known to us today as the atmosphere, my shell was destroyed by the ceaseless continuation of the meteoroid bombardment as soon as it began to form. This transformation continued for billions of years. At last when the invasion of the meteoroids began to ease, I started to mature and slowly began the process of cooling down.

4.4 billion years ago

The creation of pieces of land that looked somewhat different than the seven continents at the present began. They were just sections of land floating on my coat of crust. The formation of crust around my surface was subjected to rupture due to the high pressure caused by the intense heat deep down inside me. Over a period of time this crust, which separated into a number of huge fragments (plates), experienced various deformations that resulted in the formation of mountains. This is how the basins of the ocean and the contours of the continents began to emerge. This was the period during which new specimens of rock (granite) and the floor of the ocean (basaltic), consisting of rising magma, formed the core of the continents. Today scientists are studying the oldest granites (billions of years old) that have managed to survive natural disasters and destruction to discover how the first continents were actually formed.

Granite is the rock that forms the cores of the continents (cratons). Cratons are produced by the primary component of the oldest crust. Cratons are light enough to float on my coat of crust; they are a system created in a way that enables the development of continents. These cratons are found especially in central parts of Africa and also in South America, Australia, North America, and Scandinavia.

My surface is made up of integrated fragments called tectonic plates. Even though my crust was created by rock, it was created flexible enough to allow the plates to move a few centimeters every year caused by the intense heat from beneath my surface.

Continents

Ground movement and various changes have occurred over time due to the dynamic structure of the continents and plates attached to the mantle. Discoveries of exactly the same fossils and identical fresh water organisms in two completely different continents far from each other have proved this. The actual reason for the plate’s activity is that my core is much higher in temperature than my surface. The core deep inside me is around 5,500oC. The greater portion of this intense heat occurred in my early days as a result of the collisions and bombardments I faced, and the remaining is related to the disintegration of the radioactive elements which settled particularly in my mantle section. The heat waves which spread from my core were passed on to the next layer of the mantle. The heat melted a section of my mantle layer and magma forced my molten rocks to the surface. The molten rock, which fills the spaces between the cracked plates, enables new rock to develop, and then the plates separate from one another.

Around the same period of the formation of new rocks, my plates and the continents found on them separated. The formation of rocks deep within ocean continues the creation of the range of volcanic mountains even today. The range of under-water mountains continues for about 12,000 miles between the Antarctic and the North Pole and rises above sea level in some places.

The region called Iceland between the North American and Eurasian plates was formed as a result of an enormous volcanic eruption. This is one of the few places where the separation of the continents is clearly visible. The crevasse of Iceland, surrounded by the American plates on one side and the other European plates on the other, is around 3 miles in width. This crevasse is increasing with the formation of new rocks and is expanding the distance between America and Europe. Scientists say that the distance between the continents is increasing by around 1 inch every year, so within a hundred years the distance between America and Europe is expected to increase another 8 feet.

3.4 billion years ago

The main continents were forced together by movement of the tectonic plates forming new continents, and there are still remaining pieces of these continents inside the cratons of Australia and Africa.

2.7 billion years ago

My first super continent is still the ruling territory. But due to the power built up by heat emerging from my core, the tectonic plates are on the verge of separating this continent. Because of the heat from my core, the main land has separated and oceans were formed in my surface. Today these oceans do not exist on my surface anymore; but you can still find their pieces in the continents by a careful look.

1.1 billion years ago

The supercontinent called Rodinia, a continent which contains most of the earth’s landmass, was created. Seven hundred and fifty million years ago (mya), the heat from my core began to break down this supercontinent, and as a result Rodinia was destroyed and a new supercontinent called Pangaea, the origin of all the continents known in the present day, was created.

Two hundred million years later (or five hundred and sixty-five mya): I became acquainted with bacteria, funguses, poriferans (sponges), earthworms, mollusks, segmented worms, and arthropods.

During the time when these creatures lived on me, the climate was moderate. Major volcanic activities occurred during this period when most of the land was covered by shallow seas. The sudden outbreak of the thousands of species of living creatures during this period may seem amazing to you; in fact, this was actually the first period in which complex structural vertebrates were created.

495–435 million years ago

I first became associated with the red and green sea algae. This was also the period in which various fish and sea creatures were created. The enormous landmass of this period called Pangaea gave me a totally different appearance and had a huge impact on the climate. The reason for this was that a large section of the land was so distant from the sea. The climate of the inland regions was showing deep scale signs of change with every season-certain periods of the year were very hot and others considerably cold. During this time, the ocean did not have the effect on the climate like it does today. This is why the climates varied to such an extent. The change of climate played a huge role in the extinction of many species of that period and destroyed almost 90% of the living creatures.

Creation has continued at a distinct magnitude during the millions of years that have passed, and between 270–340 mya larger proportioned variations of vegetation were created. In a short space of time, this vegetation formed into giant trees that covered huge areas of land. The largest deposits of coal were created from the fossilization of these trees, an example of creation that would make your life a little easier in the years to follow.

On the other hand, the territories began to gather together close to the planes of the equator, and this vast land was covered with rain forests resembling the Amazon. These immense lands of greenery were the marshy forests that were home to extinct ferns and the first seeds of the various groups of plant life. The inhabitants of this intense vegetation were mainly insects, centipedes, and scorpions, but much larger than the ones we know today. The plants and forests disappeared suddenly at the end of this period, and towards the end of the same period when the vast lands of Pangaea began to take form, the glaciers expanded, the sea water receded, and the arid climate changed dramatically along with the forestry structure and vegetation. Then the creation of many new creatures occurred.

250 million years ago

The supercontinent Pangaea began to break up, and this separation caused the formation of Gondwana in the northern hemisphere and Eurasia in the south. Throughout the millions of years, South America began to recede from Africa while North America receded from Europe, resulting in the formation of the continents as we know them today. Australia drifted from the Antarctic continent and moved slowly towards more moderate climates. The evolution of the continents continued to form the huge canyons and valleys in America, and the vast range of mountains, including the Himalayas and the Alps. Between 225–190 mya mammals were created, and between 190–135 mya, birds and alga were created, followed in the next period by plantation seeds which almost completed my preparation as a suitable place for you all to live.

100 million years ago

The plan of the present day continents became apparent. Sometimes my land masses would collide in the regions where the plates joined and caused activity like the formation of the mountains. Without this plate movement, there would have been no mountains created on the planet. During this period, the various species of dinosaurs and reptiles became extinct for reasons unknown to humans. Throughout the following 100 million years, the creation of the most significant mountain ranges, like the Himalayas, occurred along with the continuing collisions of the continents. These plates continue to move 5–10 cm every year and still cause collisions today.

Today I am the proud owner of seven continents. Africa-Eurasia is an enormous supercontinent which houses Africa, Europe, and Asia. Beginning from the plateau of Siberia in Russia, it reaches as far as Africa, but Africa-Eurasia is not my only supercontinent. North and South America joined by Panama also have vast territories. If the Bering Strait that separates Russia and Alaska were to freeze, a person who set out from South America could walk as far as South Africa covering a total distance of 25,000 miles.

Although you are may not realize it, the activity of the continents continues today, and my existence that began billions of years ago will continue in the future until the time comes for me to die (you call this doomsday).

There is another aspect of the continental activity that affects you. This occurs in the form of disasters, for instance the earthquake, an event of nature which has occurred for millions of years. This activity of creation occurs as a result of the intersection of the plates, the collision of continents, or the ocean plates submerging beneath the continent. The tsunami disaster in Indonesia in 2004 was the result of a catastrophic movement of these plates.

The exceptionally lengthy process of my creation explains the transformations and progress I have experienced until I reached the condition suitable for the most precious and honorable of all creation: human beings. I hope that every moment and every aspect of the manifestation of science, wisdom, power, and willpower of my life story and creation will be a guide for you in the future and will encourage you to be even more curious about my end and to bow to our Almighty creator in respect of all He created.

Dear Peter! I, your muscular system, would like to talk to you today; I allow you to walk and do all kinds of movements very easily. In the most recent essay of this department, the skeletal system, which works together with me, discussed how it protected your body and enabled you to stand straight and firm. Sure, this is true. However, as you know, huge rocks and trees can stand straight, too; but they do not have what you do-the ability to move. They are rigid and inflexible because they do not have a system that allows them to move.

You on the other hand, as the most splendid creation in the entire universe, have mobility. All animals have mobility at different levels, thanks to the muscular tissues, which work dynamically behind all the moving organs. However, you, human beings are like neither the animals nor the plants. You have not been created to live like a tree that is pegged down in earth or like an animal that unconsciously tries to meet only its biological needs. Our Designer, God, has made you and your descendants the most important of all creation. He has given you qualities that help you to discover the world, learn, invent and establish new civilizations. To realize such potential and to carry out such duties, you need to first have the freedom to make changes in your small immediate world, which can only be done through motion. In order to enable you with this ability to move, my Creator has put me at your service. I am a system that comprises hundreds of muscles and millions of packed cells.

My most important feature is the cells that move by burning sugar, like a motor consuming fuel in order to work. My cells can shorten and lengthen thanks to the intracellular fibrils (myofilaments) that contract and expand. As a result of each contraction, I pull the bone or the organ that I am attached to and cause it to move or change shape. With the exception of your heart, your bones and organs cannot move on their own. Their ability to move depends on the nature of the muscle they are attached to.

Indeed, I can be called both an organ and a form of tissue. I can use my contraction ability not only as muscle tissue, but also as an organ and a system which runs throughout your body. That is the reason why I appear in so many different types and shapes of muscle bundles. Let me give you an example to help you better understand what a muscle consists of: Let us imagine that a thin thread is like a basic muscular cell. Let us now bring together a great number of threads and make string out of them. Then, let us bring together those strings and make a clothes line. Next, let us bring together a great number of clothes lines and make a very thick rope. Now, imagine this thick rope as a muscle and an organ. Yet, this example is too basic compared to the sophisticated muscle.

Very thin cotton fibrils make up the thin threads. In the muscle fiber, like those cotton fibrils, there are two filaments formed by the two types of protein molecules called actin and myosin, which help in the contraction function. Those little filaments are placed facing one another and they slide past each other during the contraction, which causes the muscle fibers to shorten. That is how the contraction and relaxation of a muscle occurs.

Peter, do you think that coincidence plays a role in this complex and wonderful mechanism and the incredible structure which I have attempted to simplify with an example? Not even a simple thread can be produced without a thread-maker or a machine. Each of your muscles comprises billions of fibers, wrapped all around your bones and giving shape to your body. Can such a complex and delicately intricate structure exist on its own and be positioned in the best place it could possibly be?

My muscles consist of bundles that are made of thousands of muscle fibrils; the size and shape of each muscle depends on which bone it is attached to and what function it does. For example, the muscles that move the bones in your arms and legs are long and spindle-shaped; whereas the ones that are attached to your body can be circular, or triangular, or spread over a broad area. Whatever shape they have, the red skeletal muscles, which are attached to your bones, are very strong and they are voluntary muscles, which mean you can control their movement. When you walk, run, do something with your hands, lie down or stand up, you always use my red striated muscles. The strias (stripes) can only be seen under a microscope because of the histological structure of these skeletal muscles that make up a great part of your body.

My smooth muscles are involuntary muscles that work without your control. Their movements are slow and their contractions last longer, which is the reason why they do not tire easily. The smooth muscles lie in the walls of digestive system, blood vessels, and urinary tract, but I will not talk much about them since each system has referred to the smooth muscles within itself and in detail in previous talks. Because they are not attached to your skeleton to work, the smooth muscles do not play a role in your movements, such as walking around; they only work for the movements of your inner organs.

The third type of muscle belongs to your heart (cardiac muscle) and although the heart has a little striated muscle tissue, it, too works involuntarily. Therefore, you should be aware of the fact that it is the striated muscles which work for the movement of the skeleton and do the major job, and that it is this that we refer to when we say “muscle.”

A great number of bones have been created in order to support your body, and joints have been placed between those bones for them to take the proper shape according to every movement. However, none of those joints have the ability to move by itself. A door or a window, no matter how good it is, cannot be opened or closed without an outside force to pull or push it. In the same way, a joint needs a force to move it and that force is produced by your muscular system. There are around 340 muscles included in your muscular system. It has been estimated that all the muscles in your body perform 510 different functions! While some of those functions are bone movements in your joints, other muscles can perform movements without moving a bone at all. Muscles that are placed in your forehead, face, eye lids and abdomen are those kinds of muscles. They can help you look worried by wrinkling your forehead or grimacing when you are disgusted by something.

Keeping with tradition, the muscles that are included in my system have been named based on the function they perform. For example, the muscle which moves an organ part towards another part is called an abductor, while the muscle that straightens a joint is an extensor, and the muscle that bends a joint is a flexor; the muscle that raises a part of the skeleton is a levator, that which the muscle makes a part of an organ prone is a pronator, the muscle that rotates a part of an organ is a rotator and that which brings an organ into a supine position is called a supinator.

In order for you to make all the movements that your body needs, my muscle components have to be both very strong and flexible. The most important feature of my muscle components is that they can be trained and strengthened with a systematic workout. The main goal of all sportsmen who compete is to increase the strength and the endurance of their muscles. As a result of intense exercises with weight and speed, the number, the diameter and the length of my muscle fibers will increase. Thus, I can gain more power to be able to do more work and also gain the ability to contract faster.

However, in addition to all this training and exercise, genetic factors also play a role in my health. For this reason, not everybody who works out can become a good sportsman; but if the person has innate muscular and skeletal capacity, with good exercise this capacity can certainly be enhanced and developed. However, if a person does not have the proper muscular structure for a particular sport, it would be unfair to expect them to be a champion! Although my muscles always seem to be of the same type at first sight, I might show different behavior depending on the distribution of the special fibers inside them. Some of my fibers twitch fast and tire easily, some of them twitch slowly and tire later. Depending on the distribution of these different fibers, the movements and sport that every person can do differ from person to person. In this case, an athlete who can run only 100m and an athlete who can run 10,000m do not have the same development of muscles; they have different amounts and distributions of special muscle fibers.

The contraction of any of my muscles can occur in two different ways: If the pressure put on my muscle is stronger than the resistance of the tissue, the tension remains constant and the muscle shortens. This is called an isotonic contraction. If the pressure put on my muscle is equal to the resistance, the tension of my muscle increases and its length does not change. That is called an isometric contraction. The amount of force that occurs during the contraction of my muscle depends on its length and the amount of the stimulus.

In order to produce muscle contraction, an electrical signal is sent through a motor neuron to the synaptic gap, which is positioned between the muscle cell membrane and the nerve cell. As a result, a chemical reaction occurs, which, in a very short time, causes the actin and myosin proteins in the muscle fibril to slide past each other and thus shorten the fibril, contracting the muscular cells. During this reaction, the temperature also rises a little and the total heat generated by all the muscles determines your body temperature. For this reason, in cold weather, my muscles vibrate, increasing your body temperature and trying to maintain it. You may now understand why moving the parts of the body in cold weather helps people avoid from getting sick or freezing. As you can see, every act of my Creator is quite purposeful. He can create two or even more functions within one task: Through your muscles, He not only provides you with the ability to move freely, but heat is also produced and you are protected from getting cold.

When a muscle fiber contracts frequently as a result of successive electrical impulses from a nerve fiber, it becomes tired after a while and needs rest. In this case, other muscle fibers which have not contracted for a while will take over and continue the job. However, if the electrical impulses from the nerve come too frequently and my muscle fibers do not have an opportunity to rest, a condition of constant contraction, which is known as physiologic tetanus, occurs.

The tension receptors that are placed on my muscles help maintain the harmony and coordination of all your movements including walking and running, bouncing and sitting down. They do this by constantly signaling the nerve system and providing feedback about the condition of my muscles, and about the speed and the intensity of contraction. Thus, through these receptors which control and coordinate my muscle activities, the well-being of my system is ensured. It is this that prevents you from wobbling when you walk, or helps you to take a spoonful of soup to your mouth without spilling it.

Like any other tissue or system, I, too, have some special disorders. The most common disorders are: weakness, malformation, muscles that develop and move involuntarily and habitually, especially in your face (tic), infected muscles (myosite), muscle dystrophy, muscle rigidity (the Stiffman Syndrome), benign or malignant muscle tumors (leiomyom, rhabdomyoma, or Rhabdomyosarcoma). These disorders differ in their degree of severity and risk.

Dear Peter! You have now seen that each muscle helps your organs to move, holding your bones and giving shape and function to your body, making you a beautiful model and an inspiration for sculptors. You may have understood that this is a work of knowledge and might; there is no way that the myofibril in my one cell could form by itself as a result of a coincidence.

Irfan Yilmaz is a professor of biology at Dokuz Eylul University, Izmir, Turkey.

Physicists study on the biggest and smallest physical measures, on the strongest and weakest forces, and they have calculated the ratio between some of them and attained results close to 1040 several times. For example, it has been proven that “strong nuclear force,” which keeps protons and neutrons in the atomic nucleus together, is 1040 times stronger than the force of gravity. Although some consider this situation a result of coincidence, there are also some people who have shown the courage to question the accuracy of this result and open it to discussion. Since then, obtaining the same number several times has inevitably led to the belief that the number was determined and calculated before. This situation resembles the situation of a chess player who hears somebody telling him the opponent’s next move, or the situation of a composer who hears a melody from upstairs that perfectly fits his lyrics while he is trying to write the melody for his lyrics. Is it not amazing when somebody says what is going to be especially at a time when you least expect such a vision? Questions emerge: Have all actions and incidents in the universe and the values corresponding to them been determined in advance? Is there a certain logic behind the behavior of materials without intellect or consciousness?

Perhaps when Comte de Buffon (1707–1788) started to do research into probability calculations concerning falling matches and needles three centuries ago, he did not think that he would make such an astonishing discovery. According to his calculations, the probability of dropped needles hitting a pair of parallel lines that are drawn a certain distance apart is proportional to the number pi (π) (Figure 1–2). When the distance between the parallel lines are drawn the length of a match, this probability becomes exactly 2/π. This was a theoretical result that was calculated on paper, but trying it out would raise interesting results. In other words, when a certain number of tests were conducted, it could be expected that a number of matches equal to the number that was found through the theoretical calculations would hit the lines; and, indeed, that was what happened. In addition, mathematicians found another way to calculate pi by using this method since the ratio of the number of matches or needles that hits the lines to the total number of matches or needles should give a pi-proportioned number. In 1901, Mario Lazzarini threw one needle 3,408 times and, as a result, got the ratio 355/133 or 3.1415929; the difference between this value and the real value is only 0.0000003.

The experimental proof of this fact is not difficult. When the experiment, which has been conducted thousands of times up to today, was first tried by a group of mathematicians dropping 3,000 needles, the number of the needles that touched the lines was close to 1,900, which was the desired result, and the result was amazingly found to be proportionate to pi.

Although the real relation is like the equation given in Figure 3, when the length of the needles and the distance between the lines are equalized, the desired ratio becomes 2/π. What does this mean? Does the number pi, which was created with the universe and which we meet in different fields, play a role in showing the manifestation of the Majestic Will about where an object will fall-through having a result that can not be explained by coincidence? Is falling not an ordinary incident?

While this reality makes even falling an extraordinary incident, it opens a perspective on understanding the reality behind the verse: “…it was not you (O Messenger) who threw but God threw,” which was revealed about the Battle of Badr in the Qur’an. Actually, it is impossible even for a leaf to fall without the knowledge and the calculation of Our Lord, who is closer to us than our jugular vein.

Let us think about a group of creatures that lives with different physical laws in a different universe. Assume that they live on a flat, circular world (Figure 4) and their steps get longer when they come close to the center. For this kind of creature, the shortest distance between two points is not a straight line as it is for us (A–B). Since their steps get longer as they get closer to the center, they travel close to the center. Yet, since they make the way a little longer in this way, the shortest distance would be an oblique line that takes these two variables into account and that passes by partially approaching the center. So, what would we think if we saw these creatures walking in this way all the time? Or if we knew that the creatures acting in this way were inanimate beings? In these circumstances, we might wonder whether these beings are very intelligent or whether One who knows and sees everything, and is present in every place at every time, directs them.

For a soccer forward to find the best time to attack when he is facing the goal keeper or for a tennis player to choose the best timing and position to hit the ball requires a fine calculation. In tennis, the player sometimes approaches very close to the net to meet the ball. In this way, the player gains great advantage since, by his or her positioning, the player reduces the area into which the ball can fall to the minimum, and increases his or her own chances of returning the ball (Figure 5). Nevertheless, since the ball reaches the player faster and harder, there is also a raised probability of the player’s failing to return the ball. Therefore, advancing right up to the net may not always be advantageous. Thus, the best position for the player may lie at any point between the net and the baseline when area and speed variables are considered. Similarly, the most advantageous point for the goal keeper lies between the attacking forward and the goal line, at a point which depends upon the variables of the speed of the ball and the area.

Naturally, we do not find tennis and soccer players’ positionings as described above strange since we expect them, as reasonable people, to play in this way. Yet, how would we interpret and explain it if we saw inanimate things acting in the same way? There is a phenomenon that applies this logic consciously but itself does not have consciousness. A phenomenon that astonishes people: light.

Let us think of a rectangular racetrack with points A, B, C, D. While the shortest distance for a horse that will run from one end of this racetrack to the other is the AC diagonal when the ground is homogenous, there will be a reroute if the ground is not homogenous. Assume the length of the racetrack is 80 meters and its width is 60 meters. Half of it is grass and the other half is sand (Figure 6). Also, assume the horse’s speed on the sand is half of its speed on the grass (it runs 10 meters in 1 unit of time on the grass). Under these circumstances, the horse will run the AC diagonal in 15 units of time while it will run AEC route in 14.5 units of time. The ABC route is much longer. Thus, any route which passes between these two routes will be shorter than these two. The point O, which the shortest route (AOC) passes, will be between the points M and E. When we look carefully, we understand that this is the route light follows as it enters environments of different densities; for example, the route it follows when passing from air to water (see a spoon’s broken image in a water-filled glass). As you see, light finds that specific mysterious point and follows that particular path. In other words, while entering different environments of varying densities, it finds the shortest way and follows it in an amazing way.

All these detailed calculations and functioning with great wisdom show that even inanimate beings and atoms are in the hands of a Majestic Will.

Every atom contains two truthful testimonies to the Necessarily Existent Being’s Existence and Unity. Despite being powerless and insentient, it bears decisive witness to the Necessarily Existent Being’s Existence by carrying out important duties and functions as though it were conscious. It also testifies to the Unity of the same Being, Who owns all material and immaterial dominions, by conforming to the universal order in general, and to the rules of each place it enters in particular. It settles in every place as if it were its homeland. All of this shows that the One Who owns the atom owns all the places it enters. By carrying out very heavy duties incompatible with its size and weakness, the atom shows that it acts at the command and in the name of One with absolute power. (The Thirtieth Word, Second Point, Risale-i Nur Collection)

Notes

1. See Al-Anfal 8:17.
2. “… And He knows whatever is on land and in the sea; and not a leaf falls but He knows it” (Al-An’am 6:59).

Two mechanisms of the mind

According to science, everything is bound to a cause. Without understanding a single cause or a set of causes, one cannot reach the knowledge of existence. Modern science, which does not accept the metaphysical dimension of being, does not seek wisdom in the creation; rather, it only searches for a cause–effect mechanism that is based on self-interest. For modern thought, all individuals are the lords of their selves and they interpret life according to their own reasoning.

In reality, however, the mind works in two ways: it is either a toy in hands of the nafs (the evil-commanding self) or it functions as a department of the heart. Thus, one can either think with one’s evil-commanding self or with one’s heart. In the former case, since everybody thinks according to their wishes, there is no doubt that an environment of chaos will emerge in social life. Modern philosophy, however, relying upon a wrong perspective, generalizes this idea to the entire existence and imagines the universe as an environment of chaos. For this reason, Frederic Nietzsche argued that the good is to acquire power, and he divided people into two groups, the aristocrats (or powerful) and the ordinary. In this view, those who are materially deprived seek to escape material realities and try to find a source of empowerment somewhere else in order to satisfy them. Hence, searching for metaphysical truth has its roots in lack of power. In reality, however, is impotence a result of non-recognition of religion, or is it a reason to search for metaphysical truth or religion?

The impotence of human beings

Indeed, human beings, who are in the best form among all living creatures, do not own themselves. To give an analogy, consider that a soldier has some money. If the money is granted to the soldier to be employed in the service of the government, he can only use it in certain ways. In other words, the soldier does not have absolute ownership of the money. Similarly, human beings do not absolutely own themselves or their bodies since they cannot always use their bodies as they wish. Sometimes, they become sick; they even cannot raise an arm when they want to. The very fact that they die against their wishes shows that they do not have absolute ownership of themselves or their bodies.

Human beings, if they do not lose their mind and awareness, see the world as a place of mourning since they feel pity at the sorrows of others. However, in the eyes of modern man, who assigns every self (nafs) absolute ownership, this world is a place where brute force triumphs because, as Sartre asserted, humans are left to themselves as they do not know what they should do. According to this view, what is heard everywhere is the voices of tyrants and the mourning of the oppressed. The contradictions of this modern view, which overlooks religion, have loaded humans’ hearts and souls with burdens of grief and have granted them impotence. Here, what I mean by “impotence” is that condition of spiritual weakness of the one who learns the outside world while having no point of reliance within the self.

The understanding that “conflict is always essential in the world” is based on a totally wrong perspective as well. The help and assistance of the sun and the moon to plants and animals; animals (and plants) being put at the service of humans; food materials being found in nurturing fruits; atomic sustenance nourishing body cells are some examples that show how helping one another is an obvious truth in the world. This fact is so critical that even an absence of one cause in the universe could lead to enormous negative consequences. For instance, let us imagine nitrate bacteria were to be absent in the circulation of nitrogen. In that case, plants would not be able to use nitrogen, their metabolisms would be greatly weakened, photosynthesis would stop, oxygen in the air would decrease as carbon dioxide increased, and the earth would turn into a place which would not support human life. Likewise, small or big, all kinds of balances in the universe indicate a law of reciprocal help and assistance.

The place and nature of causes

Additionally, assigning all events to certain results and regarding causes as the absolute power in the universe is a result of modern philosophy’s being deprived of transcendental truth. Bediüzzaman Said Nursi summarized the influence of causes thus: “For physical causes only gather and join together. It is confirmed by people of reason that they cannot create out of nothing what is not present in them.” When an ordinary result is looked at, a deep consciousness, a transcendental knowledge and supremacy and similar attributes are seen. Causes do not own these attributes and therefore cannot be the real architect of the result. Besides, every cause is contingent (al-mumkinat, plural of mumkin, or “possible”), its presence and absence has equal consequences. Therefore, every cause depends on another cause, which depends on a further third cause, in the same way as the feet of chairs lean against one another for support. At the end, however, for this chain to stand, there is still a need for One who is not contingent, whose presence is essential and of Himself (Wajib al-Wujud), and who is the Causer of causes (Musabbib al-Asbab). If human beings, who can be considered as the most developed cause, cannot create the tiniest thing from nothing, then no other cause can possibly be the real architect.

Thus, a human being who thinks according to modern science of trying to get knowledge of the physical world through pure reason and experimental method will assign everything (from the smallest sphere to the largest one) to causes. Since the “modern” scientist regards the perfect balances that he or she discovers, from those in one small cell to those in the universe as a whole as a gift of causes, he or she thinks that any cause can also destroy the perfect stability; for destruction is much easier than construction. Therefore, modern scientists load an enormous burden on their backs. All the discoveries that they make and everything they assign to causes in the path of science will soon become a source of fear for them. Now, knowledge grants them impotence. Under the pressure of this subjection, they seek a source of empowerment. It might sometimes be their own self (or ego), sometimes technology, and at other times nature.

As can be seen, contrary to the arguments of the mechanical worldview that separates metaphysics from physics and regards causes as sources of everything; and as opposed to the “modern” understanding that assigns absolute authority to every self, assumes chaos in the world, and considers force the only way to win a conflict; turning to belief is not because of impotence. On the contrary, it is one’s not turning to belief that results in impotence and helplessness.

Note

1. Bediüzzaman Said Nursi, Asa-yı Musa (“The Staff of Moses”), Istanbul: Yeni Asya Yayıncılık, 2005, p. 273.

The Earth’s shape is becoming rounder as a result of the construction of projects like the Three Gorges reservoir. The weight decrease due to the melting icecaps has played a major role in these changes.

From time immemorial, humanity has wondered about the shape of the Earth. Over the centuries countless studies exploring the Earth and its shape have been conducted, and they still continue today. With advancements in technology, the methods and measuring devices have constantly changed. In earlier periods the Earth was believed to be flat; nevertheless from around the fifth century bc there were varying opinions suggesting that the Earth was actually round and calculations were conducted to measure its radius. Particularly from the seventh century ce onwards, the number of studies regarding what the Earth really looked like have increased tremendously.¹

In later years, with the advent of Islam and its open encouragement of Muslims to explore the universe and make advances in science, Muslim scholars made huge progress in astronomical research. Historians who have studied these advancements in astronomical science agree that the era between the eighth and fourteenth centuries can aptly be designated as a period of Islamic astronomy. In the years following the sixteenth century, significant research was undertaken in relation to the shape of the Earth and measurements of its radius in both the Islamic world and the West.

In the eighteenth century astronomic research and the advancement of technology proved not only that the Earth was round, but that it had a distinctive shape. According to calculations, the Earth was bulging around the equator and flattened at the poles. The maps produced by satellite systems show that the Earth is not completely round or smooth, but rather it has protrusions, creating an uneven surface that resembles a face with spots.2

“Geoid” is the term scientists prefer to use when referring to the physical depiction of the Earth’s surface. The shape of the Earth is not a perfect ellipsoid, thus, scientists use this representative surface that is thought to be most approximate to sea level, in order to identify departures from the ellipsoid shape. Due to the events of nature and human-related factors the geoid constantly changes, and this is why a precise mathematical account of the geoid has not yet been possible.

The Earth is known to be a geologically active planet. Just as everything else in the universe, from atoms to galaxies, has not been left to their own fate, the Earth is also constantly being transformed, thus making our magnificent ecosystem possible. The continuous geological process of changes in the Earth’s crust is related to a variety of factors: the varying density of the rock layers which form the Earth’s crust, the activity of the tectonic plates, as well as the movement of the continents, shifts in the center of gravity, tidal activity, hydro-spherical and atmospheric phenomena, and human intervention in some regions.

Researching the variations in the gravity of the Earth with satellite systems is a relatively new method of recording the changes in geoid elevations. The distance between the center of the Earth and its surface is constant (the tallest mountains will rise or decrease 1-2cm per year at most); if we take into consideration that the Earth’s physical body does not vary much and disregard the other forces, then we can say that the main reason for these infinitesimal changes in gravity on the surface of the Earth is due to differences in mass. While there is a decrease in weight in specific regions from melting glaciers, in other areas there is an increase in weight due to melting water flowing into reservoirs; both these phenomena play a significant role in the variations of the Earth’s gravity.

Even a minor variation in mass can be detected by measuring gravity. The change of mass location on the Earth’s surface results in gravity variations in the same region; in brief, today the commonly used gravity measurements are the most important source for detecting and identifying variations in geoid elevations, as well as determining the actual reasons for these changes. Gravity measurements are conducted via satellite systems; these indicate changes in mass location by detecting an increase or decrease in weight. The most modern technological satellite systems that can detect gravity change and allow us to follow the variations in masses on the Earth’s surface are the satellite used by the European Space Agency, called GOCE, and NASA’s satellite, called GRACE. GOCE has been designed to perform accurate studies of the Earth’s gravity field as it progresses into orbit. As the satellite passes over the regions where gravity is intense or weak, it measures the variations in gravity with signals that have been conveyed by a device called a gradiometer. GRACE is a pair of identical satellites that are flying in the same orbit, 136 miles apart; they orbit the Earth at a distance of 300 miles. These satellites can measure distances with microwave signals, and can detect changes of less than 1% the thickness of human hair; thus the twin satellites are able to accurately measure the distance to the surface of the Earth. The measurements provided by this satellite system make it possible for changes in gravity to be calculated. The GRACE satellite data is 1,000 times more accurate than other gravity field detection systems.

The enormous waves that occurred on the sea surface as a result of the Sumatra Island earthquake, which measured 9 on the Richter scale, caused a level ridge, measuring about six meters in height, to form on the shore. According to data produced by GOCE, such changes in the mass of the Earth’s surface caused a variation of 18 mm to occur on the geoid; this is recognized as a relatively high degree of change.

Changes in the polar glaciers also cause variations in the geoid; data provided from satellite GRACE shows that the layers of ice in Greenland and the Antarctica are melting at a higher rate than previously expected. The melting icebergs are causing a rise in sea levels of up to 0.41 mm every year and the weight of water produced from the melting icecaps is causing changes to the shape of the Earth’s surface.3

One of the interesting facts attained by GRACE is the changes in the Earth’s gravity field that have been caused by Three Gorges in China, the largest reservoir ever built. The lake region of the reservoir that is being built measures around 372 miles long, 70 miles wide and approximately 574 feet deep; when the casing of the reservoir is completed it will house an amazing 39.3 billion m3 (9.4 cu mi) of water. The area that this reservoir will cover once the project is completed is so great that it will make an estimated 1.5 million people homeless. It has been observed that the enormous accumulation of water in the completed sections of the reservoir has increased the gravity level in that region, which in turn has caused changes in the geoid structure.4

Scientists have confirmed that the Earth’s shape is becoming rounder as a result of the construction of projects like the Three Gorges reservoir. It is also estimated that the weight decrease due to the melting icecaps has played a major role in these changes. In some regions of Scandinavia and Canada the ground is rising 1 cm every year due to the melting glaciers. The water produced from the melting glaciers is forcing the currents in the Atlantic Ocean towards the equator, while the decrease of mass at the poles and the increase of weight in the equator region have caused significant changes in the shape of the Earth.

Many scientists claim that changes in the Earth’s surface have been caused by changes in the climate. Unfortunately, according to a report published by the UN Intergovernmental Panel on Climate Change (IPCC), humans are responsible for 90% of global warming. As a result of these vast variations, the geoid shape of the Earth is becoming rounder and its radius is increasing annually by 0.4–0.8 mm. The reasons for these changes are being closely monitored by scientists. According to scientists, the variation of the geoid that has been caused by changes in mass location is having an effect on the Earth’s dynamics, with the transfer of mass demonstrated by the changes in gravity causing a reduction in the speed of the Earth’s rotation around its axis; this is expected to result in variations in the daily time-zone.

Abdullah Sancak is pursuing an academic career in engineering in Turkey.

Notes

1. For more information on this topic see James R. Smith, Introduction to Geodesy, The history and Concepts of Modern Geodesy, John Wiley and Sons, Inc., 1997.
2. There are interesting images that show how the earth looks in the following link: University of Texas Center for Space Research and NASA (7 Haziran 2005) http://www.csr.utexas.edu/grace/gallery/gravity/
3. G. Ramillien, A. Lombard, A. Cazenave, E. R. Ivins, M. Llubes, F. Remy, R. Biancale, Interannual variations of the mass balance of the Antarctica and Greenland ice sheets from GRACE, Global and Platenary Change 53 (2006) 198-208.
4. San Shaoan, Institute of seismology, CEA, Wuhan, China, Gravity change before and after the first water impoundment in Three Gorges Project. http://www.sgg.whu.edu.cn/icct/html/icct_ppt/S1/sun.s.A___fourth.pdf

With this act, the holy Pole meant, “Whenever your son’s spirit prevails over his body, and his heart over his carnal soul, and his intellect over his stomach, and he demands pleasure for the sake of thankfulness, then he can eat delicious things.” (Said Nursi, Nineteenth Gleam, 3rd point.)

I too witnessed a similar incident thirty years ago. With a large group of friends from university I was invited to visit a well-known scholar for whom I had a deep respect. We had the opportunity to attend a dinner with him and among the food served were some delicious cherries. My inner voice said, “If I sit near him, I will not be comfortable enough to eat as many of those cherries as I like.” This was exactly what happened. While I was thinking about how to get a chance to eat more of the cherries, that respected person took one of the cherries, excused himself, and left the table. I still cannot forget how ashamed I was of my thoughts at that time.

As a result of the story of Abdul-Qadir Jilani and my own experience, I started to ponder the activities that function so well in the human body. In medicine, the dynamic balance that entirely governs the body during eating, drinking and digestion is known as homeostasis. The most crucial body fluid in this balance is the blood. All the agents in the blood have a fixed quantity, a fixed measure and are supplied at a constant rate. Blood pressure is stabilized according to the characteristics of each vein. For instance, the average blood pressure of large arteries is about 100 mmHg. If the pressure exceeds this figure, then the result is hypertension. Hypertension can lead to cerebral hemorrhages, paralysis, renal failure, cardiac expansion, cardiac failure and heart attacks, all of which can result in death. As for hypotension, this is when the flow of the blood to the organs, mainly the brain, lessens. Another example of the importance of maintaining balance is that the agents which are responsible for maintaining the concentration of sugar in the blood (glycemia) must be kept at a suitable balance. If the ratio of the blood sugar (glycemia) rises, the person may go into a sugar coma, which is life threatening. However, if the ratio of blood sugar drops, the organs, in particular the brain, are deprived of energy. A hypoglycemia coma (when blood sugar is too low) is even more dangerous for the brain than hyperglycemia (when blood sugar is too high). The concentration of sodium, potassium, chlorine, calcium and fatty acids present in the blood, like sugar, are kept in a dynamic balance. If this concentration is upset, the result may be disease or even death. The Owner of Absolute Will and Infinite Mercy keeps all these in balance thanks to the marvelous mechanisms that He has placed in our bodies. However, we are free as far as actions like eating and drinking are concerned, for we are granted the willpower to choose our actions.

Balance in nourishment

One of the most often discussed medical subjects in recent years is obesity. This is an important health problem that poses a threat to life, and it is related to diabetes, hardening of the arteries (arteriosclerosis), fatty liver, cirrhosis, cardiac failure and heart failure. Apart from using one’s own will power and eating less, doctors have presented other harmless ways that are appropriate to human nature to treat obesity. Being overweight constrains the ability of a person to move (exercise) and this inactivity, in turn, leads to more and more weight gain. God has enabled us to seek nourishment wherever we like, within certain parameters. Naturally, our stomach has a certain capacity and when this capacity is met, we feel full and do not need to eat any more. Yet, even though we feel full and should not eat, as this is what is necessary for the health of our body, we are overcome by our lower self and tend to overeat extravagantly. The problem of obesity seems to be greater in developed countries.

Our Creator has not put any restrictions on the absorption of food into the blood. All the food we eat is taken into the intestines so that the nutrients can pass into the bloodstream. If the dynamic balance (homeostasis) were to be maintained here as well then the body would take as much as it needed and the surplus of food would be evacuated from the body without going into the blood; as a result, obesity would not be a concern, however much a person might eat. But by allowing all the food we eat to pass into the bloodstream, the Absolute Ruler has set a test for us, challenging our wills and warning us about self-control.

Most of the activity during digestion and absorption takes place in the small intestine. Our small intestine is a duct which consists of three parts, namely the duodenum, jejunum and ileum, each having different functions and structures. The length of the intestine is 3–4 meters, and it measures 2–4 centimeters in diameter, varying according to the position in the body. The area of the inner surface of this cylindrical structure is 1,600 cm2 (0.16m2) at its maximum. The inner perimeter of the intestine is not like a flat tube, but rather it has folds, each measuring about 8 millimeters, that stretch over the inner parts of the canal. These folds allow the absorption surface to be increased about threefold. If the inner surface of this structure were flat, the absorption capacity of the small intestine would not be more than 1/600 of its present capacity. The surface of these folds is also not flat, but covered with protrusions called villi that are shaped like a finger; these stretch into the vacuum of the canal by about 1 millimeter. There are between 20 and 40 villi to every square centimeter on the surface of the intestine. These villi allow for there to be a tenfold increase in surface absorption. The surface of the villi has cylindrical cells that are arranged in a single row and these help in absorption. The surface of these cells has extensions that are quite thin and dense, known as microvilli, or epithelial cells. Thanks to these cells with a brush border surface, the absorption surface can increase by about twenty times. Thus, although the surface area of a flat canal of the same size should be approximately 3,300 cm2, thanks to surface folds, villi and bushy edges, the total absorption surface of the small intestine increases to 2 million cm2 (200 m2). Moreover, some research has suggested that the total increase could be even greater (about 1,000 times as much). Normally, 100 grams of fat, 50–100 grams of amino acid, 50–100 grams of iodine, and 7–8 liters of water (consisting mostly of fluids produced within the body) are absorbed by the intestines daily. Furthermore, if one eats or drinks too much, the maximum capacity of the system allows the absorption of several kilograms of carbohydrates, a half to one kilogram of fat, a half to one kilogram of protein and twenty liters of water per day. Our intestines have been created with the capacity to transfer all this food into the bloodstream. If we do not control our eating, this capacity is abused and we can face conditions like obesity.

In this life, one of whose tests is in our body, and in which we are required to strive hard using our willpower, there is no limit to the absorption of foods that have high calories (lipid, carbohydrate, and protein), and this can lead to being overweight, as mentioned above. However, in the absorption of minerals, which are not normally considered as making up the basic components of nourishment, but which are of the utmost importance for the human body (in all the operations of the nerves, muscles, bones and in the balance of all the electrolytes), the rules of dynamic balance occur in our intestines, regardless of our will, by the help and mercy of God. For instance, hemoglobin, which is found in the red blood cells (giving the blood its red color) and is charged with the task of transporting oxygen, contains iron. When there is surplus iron in the body, hemosiderosis occurs, which leads to the destruction of organs such as the liver and the pancreas, or cardiac failure. If there is an iron deficiency, then a person suffers from anemia. It is for this reason that a quite sensitive iron-absorption balance exists in our intestines. Here, it is evident without question that there is Divine Aid and Mercy. The same mechanism works for substances like calcium.

Prophet Muhammad’s, peace be upon him, advice to stop eating before feeling full is a significant measure against obesity, for it eliminates “false” appetite. This has a psychological truth, for the brain responds to the feel of fullness a short time after eating. In fact, we all know by experience that we actually feel full a short while (fifteen–twenty minutes) after we stop eating even if it is a small meal.

To conclude, the Almighty One warns us against extravagance and orders us to use our willpower. At this point, we can see how important a role the blessing of religious belief and the training of the soul and the will play in eating habits. Likewise, the principles of Islam, which is in perfect keeping with human nature, are crucial for the well-being of the community as a whole; charitable alms and fasting, which urge us to help and think about those with less, are obligatory and all kinds of charity and good deeds are encouraged. In Islam extravagance is prevented, not only in eating and drinking.

Omer Arifagaoglu is a professor of medicine in Turkey.