Radon is one of the noble gases in the periodic table. It is the heaviest, naturally occurring one among them. Due to its size, it is the most likely to establish compounds with other elements, compared to the other noble gases. However, its radioactivity easily breaks the bonds that are established between Radon and other elements. Thus, Radon has very few known compounds.

Radon forms in the radioactive decay chain of Uranium, which then forms Thorium, then Radium, and finally Radon. Radon condenses to form a solid that glows with yellow light due to its radioactivity. The half-life of Radon changes depending on the isotope at hand, but the longest half-life detected is around 92 hours.

Radon naturally occurs underground, and does not dissolve much in water or other liquids there. When it leaks above surface in the form of gas, it tends to accumulate in the not-well-ventilated parts of the houses, e.g. basements. Exposure to Radon gas is linked with cancer, and so it is considered as a health hazard. On the other side, the hot springs that contain trace amounts of Radon gas are used rarely to cure heart disease.

The following is an allegorical story in the form of a letter about how Radon develops in nature.

I am the only survivor from a quadruplet. One of my sisters survived only 108 minutes after birth. The death of the second one followed about half hour later. I spent my childhood with my only remaining sister. Our mother was not there either, because she had died while giving birth to us.

As we were growing into our adolescence, we shared many secrets with my sister, be them adventurous or romantic. She was a sister, a close friend, and sometimes a mom. When she died in her flourishing age, I not only lost my third sister but also lost a mom for the second time.

Since then, without bothering myself whether they are friend or foe, I let people approach me. I show affinity to them so much so that I am considered as the most sociable noble. When they start enjoying the beauties displayed on me, I am stressed by my need of privacy and security. And, I easily push everyone away by intimidating them with the very beauties they were attracted to.

So, life has been a bottomless solitude for me… Yes, being alone is part of being noble, and I need my privacy in my ivory tower. But I’d rather not have impenetrable walls between me and people.

What a discrepancy! I have a habit of intimidating people to push them away, but I am complaining from an endless solitude at the same time… Why am I like this? It feels as if there is an unknown person in me, over which I have no control, who is doing things using my body. Should I cry for help: I am stolen!

I thought about this a lot. Was it a psychological inheritance I received from the family? You know that my mother died when giving birth to me and that my sisters followed her. My grandmother also died when giving birth to my mother, and my grand-grandmother died when giving birth to my grandmother. I don’t know if it is this strangeness that makes me instinctively seek solitude, so much so that my husband could not stand me. I told him that our relationship could only survive in the polar cold places, and he said he can stay cold but not in a place where there is no one else. Eventually, our marriage ended, after which I realized that I was pregnant.

But life goes on, you know, whether you are a noble who pathetically seeks solitude, or if your mother died when giving birth to you, or if you are a pregnant mom left to herself… “The great gears of life turn with irresistible momentum. You either keep pace with it, or get smashed in it.” That’s what my mother said in her letter to me. And that letter is all I have of her. Though, however much I would like her to be with me, and share my joys of success and sorrows of failure. Maybe she would reveal precious life lessons to me, or whisper her secrets into my ear. Maybe she would reprimand me sometimes… Not a single moment lived with her, not even a smack… I wished that this not be the lot of my baby, but how?

I thought of Prophet Abraham’s wife, Hagar. Alarmed by her baby’s cries, she had rushed between two distant hills in search of finding some people to come for help. God had replied to her efforts by creating a spring in the middle of the desert, just near her, and guiding travelers there.

Following Hagar’s example, I tried taking refuge near people so that my baby would not be in a lonely world. In order not to disturb them, I chose their least used places. But people cast me out of there, lest I contract some illness. I tried fancy yellow dresses to make myself look friendly. But, instead of becoming friends, they put me in glass chambers. I tried to help people with some of their diseases, but except a few, they shunned me since I was too risky to be adopted into medical practice.

Oh my God, despite all my efforts, my baby was going to come into a solitary world like her mom’s. I knew I was going to be alone when giving birth, and so was my baby. There was a sour smile on my face every time I thought of her…

But maybe… Maybe one day, God would guide travelers here, and she could join them, and prosper wherever she ends up with. Maybe she would have a stable family, and become the mother of many. And I hope, even in her well-established state then, she could still keep her lineage at heart, from our grandest grandmother all the way down to her mother: Uranium, Thorium, Radium, and, me, Radon.

What could I do to make sure that my daughter holds on to her past? Could I write a letter, just like my mother left to me? Maybe that was a good option, since I inherited from my mother all the letters left from mother to daughter starting with the grandma Uranium. Yes, I could abide by the tradition of letters, and tell my daughter how much I loved her even before I could hold her in my arms. I could tell her that she had appeared in my dark night like a bright star, although she was yet in my womb. Maybe this way, she could feel at ease when with people, unlike her mother. She could make real friends and be happy with them, even if I won’t see her once.

Yes, I won’t see you, sweetie. It is what the doctors told while giving me your glad tidings: that I had cancer, and that my body would not sustain a birth. I had to choose between carrying you and a life without you. I chose to live with you, my precious, even if that meant the end of my life when yours bloomed. When you are going to be reading this letter, I’ll be watching you with your aunts. Shine and make us smile with your beauty.

Love,
Your mom Radon

Cryptography mainly aims to save information and to transfer messages to recipients safely. Cryptography can change a message into a complicated form by applying several different methods. Encoded information can be resolved only when the receiver applies specific methods to it. Not only does computer cryptography render communication secure but it also gives users secure access to servers.

Nowadays, cryptography is becoming more and more significant, especially now people transfer their personal, commercial, military or political information to each other on internet. It is easy for someone to get personal information through online shopping sites which are very common today. Therefore, credit card information entered into the website is converted into unintelligible characters through an encryption method so that the credit card number can be transmitted to the server securely. Then, the server can easily retrieve the original form of the credit card number using decryption.

The encryption algorithm includes essential elements known as the “key.” Protection of the key is always vital for information security.

History of Cryptography

To find the first examples of cryptography one needs to go back more than 4,000 years in history. For instance, in 2000 BCE the ancient Egyptians used hieroglyphs on the gravestones of their kings to describe their achievements when they were alive. Eventually, the system of hieroglyphs grew too complex to understand. Then people began to use it for encoding. Similarly, Chinese people used ideography, which conveys ideas through symbols, to hide the meaning of words.

There are also encoding examples from ancient Mesopotamia that have similar aspects to those used in Egypt. The Roman emperor Julius Caesar used a type of encryption technique called the “Caesar cipher” in which each letter in the plain text is replaced by a letter some fixed number of positions down the alphabet. In the Middle Ages cryptography received a lot of attention from many nations, especially in Europe. In recent years, many different methods have been developed in this field. Therefore, the classical methods are not as useful as they were in the past, especially since the 1970s. Today, more complex mathematical methods have replaced the classical methods of cryptography.

The Arabs were the first to make successful studies of how to decode encrypted messages. Ahmad al-Qalqashandi of Egypt (1355–1418) developed an encryption method which is still used today. This technique is based on a theory of language stability which explores the distribution and frequency of the words in a text. With this method, the frequency of the characters within the encrypted text is compared to the frequency standards in the language; in this way, it is determined what an encoded letter really stands for.

This method is used successfully in decoding messages encrypted by the mono-alphabetic method, which is based on sliding or replacement of a letter by another one.

In 1931, the French obtained documents from a German spy which showed the functions of a code named “Enigma” that was going to be used in World War II by the Germans. British mathematicians were then able to decipher the code during the war. Thus, the commands of Hitler could be learned immediately by the Allied Powers. The Allied countries won the war because of their access to the decryption technique. Likewise, the American army gained victory over the Japanese in the Pacific War in the 1940s because American decryption experts, along with their British and Dutch colleagues, were able to decode the system called JN-25 which was being used by the Japanese army.

Technological developments in computer science have enabled us to decode even previously unbreakable ciphers. For instance, an encrypted message which was created in 1977 and which, it was thought could be decoded only 40 quadrillion years later with the help of an algorithm that analyses the known large numbers into their factors, was actually decoded seventeen years later in 1994.

Classical and modern cryptography

Cryptographic methods are divided into two categories: classical and modern. In the classical method, encoding can be done by consistent replacement of a letter by another letter in the same alphabet. For example, if we replace each letter in the word FOUNTAIN by the third following letter it changes into IRXQWDLQ. It can also be done by replacement of a word with another one or replacement of a character by another character. Of course, the recipient of the message must be the only person who knows the decryption method. In that way, for example, the unintelligible word above can easily be changed back to its original form by replacing each word by the letter three places before it in the alphabet. Such encrypted messages can only be decoded by linguistic analyses or after numerous trials. The classical method was invented hundred of years ago, and it has been used since then. Although this method is so simple that it can even be used manually, computers are the only devices which can have maximum security as well as very long keys and complex algorithms for the modern technique.

The “Spartan cylinder” is another device used in the classical method. A message is written on a piece of paper rolled around a cylinder with a known diameter. The encrypted message is then detached from the cylinder and sent. The only way to decipher the message is to have a cylinder of the same diameter. If the unrolled paper is re-rolled around a decoding cylinder properly, then the original message is obtained. This method is known to have been used by the Spartans around 600 BCE.

One modern method is called Public-Key Cryptography. In this form of cryptography, the key used to encrypt a message differs from the key used to decrypt it. The public key may be widely distributed while the private key is kept secret. Thus, incoming messages are encrypted with the recipient’s public key; yet, they cannot be decrypted except with the recipient’s private key. Hence, the possessor of the private key is the only one who can decrypt the message and read it.

Conversely, in secret-key cryptography, a single secret key is used for both encryption and decryption. One disadvantage of secret-key cryptography is the distribution of the private key since it is always at risk of being acquired by third parties.

If we look at the universe, we can observe similar cryptographic methods in every creation process. For instance, living cells produce protein by deciphering nucleic acids (DNA, RNA), which include encoded genetic information in ribosomes.

The structure of encoded DNA and encryption in protein synthesis

There is divine wisdom in the encoding of DNA and the transference of these codes to ribosomes in the protein-making process. If we compare DNA molecules, which contain the genetic instructions inside living organisms, to a book, the letters in this book can be symbolized by A, T, and G and C. These symbols represent four molecules which are used in the encoding of the genetic program that shapes the basic form of all living organisms. Each human genome is identified with different sums of those letters. For instance, while the sum of genomic letters is approximately 3 billion in mice and human organisms; it is about 4–5 million in a bacteria. Furthermore, when the genome sequences of two humans are compared, the combination difference between the two appears to be only one percent; nevertheless, no human being is exactly like another in appearance.

There are some interesting distinctions between humans and animals in terms of their genome numbers. The various encoding techniques used in DNA are a basic biological mechanism which can also be considered the mystery behind the genetic diversity in the creation of living organisms. If we compare the genome to a program booklet, we can consider the booklet to be a tiny model of the “Manifest Record” (Imam al-Mubin) mentioned in the Qur’an, in which the future lives of all things and beings, including all the principles governing those lives, and all their deeds and the reasons or causes are kept pre-recorded in this world. The instructions and mechanism used in this encoding program are identical in most living beings. This uniformity shows that they are all created by one Almighty being.

Scientists also observe another kind of encoding which helps transmission of the right message to ribosomes during the protein-making process. The main idea is that unlike the base-pairing of DNA, in messenger RNA (mRNA) the complementary base to adenine is not thymine, as it is in DNA, but rather Uracil, and also that every three nucleotides (a codon) carry information of one amino acid. For example, while codons in DNA appear as “AAT, GCC, GAT, GTA,” they appear as “UUA, CGG, CUA, CAU” in mRNA. Here the main goal is not to keep the information safe against the third parties as in normal encryption, but rather to transmit the message properly and preserve the diversity of living beings.

Developments in the area of cryptography do not only provide confidentiality of information, but they also shed light on our understanding of God’s wonderful creation in the world of living creatures. All these extensive and essential practices, including the encoding of the information by the four letters of DNA, proper transmission of this encoded information to the cells, and the necessary synthesis in the cell, prove that the All-Knowing and Omnipotent God has great wisdom in all His actions in the Universe.

References

• Protein Synthesis, http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookPROTSYn.html.
• Selim Aydın, “Gen Haritası Neler Söylüyor?”, Sızıntı, June 2001, no. 269.
• Quantum Cryptography: Privacy Through Uncertainty, October 2002 http://www.csa.com/discoveryguides/crypt/overview.php 1.5.2006.
• Larry Petterson, Bruce S. Davie, Computer Networks: A System Approach, Morgan Kaufmann Publishers, 2000, 568–615.

The modern age has made people so preoccupied with worldly affairs that for a long time people have been deprived of the joy of being in the presence of our Lord. Bediuzzaman felt this honor of celestial presence before God throughout his life, and no prayer was deprived of its share of divine serenity.

Assignment to read the whole Qur’an everyday

Bediuzzaman would assign every one of his students who resided in towns or villages near Isparta to read a certain part of the Qur’an; thus, with the participation of all the students, many hatims (reading of the entire Qur’an) were completed every day. Bediuzzaman would read the hatim prayer on behalf of every participant and would devote it to the blessed souls of the Prophet, peace and blessings be upon him, his family, his Companions, all believers, and students of the Risale-i Nur.(1)

Additionally, at the beginning of each of the blessed months, Bediuzzaman would issue a letter of celebration, which also served as a means of maintaining communication with his students. An excerpt from one follows:

My esteemed and loyal brothers,

First of all we celebrate your Blessed Three Months and the most precious holy nights therein. May God Almighty reward all your nights to the worth of a Raghaib or a Qadr.

We pray that your night of Bara’a, the forthcoming Ramadan, and the night of Qadr be more rewarding than a thousand months, and be recorded thereby in your “book of deeds.”

Likewise, we celebrate your night of Mi‘raj and we beg that your prayers on that night will be accepted by the divine Mercy-we hope the fact that it rained the day before and the day after this night in this region is a sign for the future manifestation of universal mercy.

My esteemed and loyal brothers,

We celebrate your blessed Ramadan with all our soul and existence. May God Almighty bless the night of Qadr for all of you with more rewards than a thousand months. And may He grant you a lifetime of eighty years, which will be most appreciated for each of you. 

Ramadan nights

Bediuzzaman’s life of worship was transformed into strict discipline during Ramadan. Bayram Yuksel, one of his most loyal students, reports that Bediuzzaman would not sleep on the blessed nights, and most particularly in the second half of Ramadan. He used to check on his students at night and spill water on their faces to keep them awake; he made sure they stood vigilant in prayer.(2) He constantly reminded them of the authenticated hadith that the night of Qadr was to be searched for in the second half of Ramadan, and especially in the last ten days.

Bediuzzaman engaged in supplications and remembrance, and read a part of the Qur’an every day. He paid his sadaqa al-fitr (charity of the fast-breaking) to his students and asked them to collect the same charity among themselves.

He indicated the lofty mission of his students in one of his letters on the occasion of the Three Holy Months:

In His name, glory be to Him,

There is nothing that does not glorify Him with praise.

My esteemed and loyal brothers,

This summer season is also a time of unawareness, a chaotic time of chasing after livelihood, (as well as) a most rewarding time of prayer in the Blessed Three Months, and also a time of diplomatic storms not caused by weapons; if this is not resisted by powerful fortitude and determination in the holy mission, a sort of laziness, a loss of zeal, a state of languor is likely to set in, to the disfavor of the Risale-i Nur service.

My dear brothers, know for certain that the mission that the Risale-i Nur and its students are engaged in is far greater than all the great issues that are on the surface of the Earth. Therefore, do not lose your zeal for your eternal duty by focusing on worldly issues that may arouse your curiosity. (3)

In another letter, Bediuzzaman speaks about the spiritual atmosphere of the Blessed Three Months:

When the weather is unfavorable, it has a bad influence; likewise when the spiritual atmosphere is corrupt, every individual is influenced to the degree of his or her capacity and skills. The blissful atmosphere of the Blessed Three Months and the month of Muharram (the first month in the Islamic calendar) is purified, beautified, and can resist horrendous misfortune and storms, with the considerable inclination, efforts, and illumination of all believers who are involved in the profitable pursuit of earning the Hereafter. Everyone benefits from these circumstances to his or her respective level. But, after the Blessed Three Months depart, the exhibition and market for the Hereafter trade changes, and the exhibition of the world starts. Most effort undergoes a transformation. The smoke of the debris poisoning the air spoils the spiritual atmosphere; everyone is poisoned to the degree of his or her level. (4) 

References

1. Sahiner, Necmettin, Son Sahitler (The Last Witnesses), Nesil Yayinlari, Istanbul: 2005.
2. Akar, Mehmet, Secdede Bir Omur (A Lifetime in Prayer), Sahdamar Yayinlari, Istanbul: 2005
3. Emirdag Lahikasi (Letters from Emirdag), Letter No: 21.
4. Kastamonu Lahikasi (Letters from Kastamonu), Letter No: 40.