Radio receivers

RADIO RECEIVERS ON MOUNTAINS

We gave Dawud great favor from Us: “O mountains and birds! Echo with him in his praise!” And We made iron malleable for him: (Surah Saba’, 10)

The description of mountains “echoing” in the above verse may be a reference to the way that radios work. (Allah knows the truth.) The basic principles on which radios operate may be summarized as follows:

The radio system consists of a transmitter and a receiver. The transmitter takes the message to be sent, encodes it in what is known as a “sinus wave” and transmits it in the form of waves.
The receiver takes in the radio waves and deciphers the message sent on the sinus wave. In this way, the message is received in exactly the same form as it was sent. The word “awwibi,” translated as “echo” in the above verse and meaning “sound being repeated or returned”, may very well be a reference to the transmission of these radio waves. (Allah knows the truth.)

Sounds emitted in the form of sound waves by way of an antenna in order that the receiver can take in the data sent are also met by an antenna linked to the receiver.  The purpose behind using antennae is the transmission into space of the waves emitted by the radio transmitter. The receiving antenna is intended to collect as many radio waves and messages as possible. That is why NASA uses giant antennae bowls 70 meters across for its satellites millions of kilometers away in space.

There are also radio telescopes which use radio waves to form images. Since radio waves are very long, a radio telescope has to be much larger in order to collect them as images sufficiently clear to be compared. In order to obtain sharper and better images, astronomers use a connected series of smalletelescopes or receptors. These telescopes act collectively as one very large one. And in physical appearance, these series resemble mountain systems.

In addition, “repeaters” are employed to permit radio communications over every great distances. These devices repeat and strengthen weak signals and enable them to be transmitted over considerable distances.  Such devices are generally sited on tall buildings or on the tops of mountains for preference, in order to have the greatest effect.  The use of the word “awwibi,” translated as “echo” in the above verse, is exceedingly wise. The statement of, “O mountains and birds! Echo with him in his praise!’”  in verse 10 of Surah Saba’ may thus be a description of that technology. Allah knows the truth.

1 http://www.val-tech.com/nelsone/vla.html

THE WISDOM BEHIND THE PROHIBITION OF BLOOD IN THE QUR’AN

THE WISDOM BEHIND THE PROHIBITION OF BLOOD IN THE QUR’AN 

 He has only forbidden you carrion, blood and pork and what has been consecrated to other than Allah. But anyone who is forced to eat it – without desiring it or going to excess in it – commits no crime. Allah is Ever-Forgiving, Most Merciful. (Surat al-Baqara, 173)

The wisdom behind Allah’s prohibition of blood emerged during the 20th century. By carrying vitamins, hormones, oxygen and substances such as protein, sugar and fat absorbed during digestion to the cells, blood makes it possible for life to survive. On the other hand, it also carries various toxins and waste products that need to be expelled from the body. One of the most important tasks performed by blood is to transport substances such as urea, uric acid, keratin and carbon dioxide that need to be removed from the body.


Therefore, in the event that significant quantities of blood are consumed, the level of products in the body that should be expelled will rise considerably. That will increase the levels of urea, harmful substances transported to the kidneys for expulsion from the body. This can impair brain functions and even result in coma. That is why, because of its very nature, there will always be harmful compounds in blood, even if taken from healthy animals. If it is taken from a sick animal, various parasites and germs will also be transmitted in it. In that event, the germs may multiply and spread throughout the body. And that is the real danger. If someone consumes blood, all the germs and waste products in it may spread through the body and lead to such diseases as kidney insufficiency or liver coma. In addition, most of the microbes carried in the blood may cause other diseases by damaging the lining of the stomach and the intestines.

What is more, blood is not a sterile environment; to put it another way, it is ideal for germs to grow in.1 Since microbes have excellent opportunities to feed in blood, it represents an ideal environment for them. When in equilibrium with the functions of the other fluids in the body and the immune system, blood does not support micro-organisms, and therefore disease. In a healthy individual, these micro-organisms live by making use of one another inside the body. When that environment is seriously impaired, when the internal equilibrium is damaged, in other words, they may turn into micro-organisms that cause disease when they find the appropriate surroundings.

For example, when the blood pH level (acid and alkali balance) is imbalanced because of poor nutrition or harmful chemicals, harmless microbes can change into ones that cause disease. If the body is to be healthy, the pH level of the blood should be around 7.3. Even small variations in that level may cause that balance to be impaired and cause micro-organisms to become more harmful in order to adapt to their surroundings. Blood being sterile may be compared to milk going off when left outside. Microbes already present in the blood exhibit harmful effects by adapting to their new environment.2

In addition to all this, blood is not suitable for use as a food product. The level of digestible proteins such as albumin, globulin and fibrinogen is low; just 8 grams in 100 ml. of blood. The same applies to fats. In addition, blood contains a high level of hemoglobin, a complex protein that is very difficult to digest and is unacceptable to the stomach. When blood clots, the protein fibrinogen gives rise to a plate containing erythrocytes (red blood corpuscles) by turning into fibrin. Fibrin is one of the hardest proteins to digest, thus making blood even more difficult to digest. In conclusion, health experts agree that blood is unfit for human consumption in any form.After saying:  

“Unlawful for you are carrion, blood and pork, and what has been consecrated to other than Allah, and animals which have been strangled, and animals which have been killed by a blow, and animals which have fallen to their death, and animals which have been gored, and animals which wild beasts have eaten – except those you are able to slaughter properly – and animals which have been sacrificed on altars, and deciding things by means of divining arrows – that is deviance….” Almighty Allah goes on to say…” But if anyone is forced by hunger, not intending any wrongdoing, Allah is Ever-Forgiving, Most Merciful” (meaning that an exception can be made.) (Surat al-Ma’ida, 3)

 People of the time were unaware of the wisdom behind it, but were protected by abiding by Allah’s prohibition. Those who believe and trust in Allah and comply with His commandments and prohibitions will enjoy auspicious lives in terms of the Hereafter and also live under Allah’s protection and infinite mercy.



1 http://www.explorepub.com/articles/enderlein1.html; Karl Windstosser, Polymorphic Symbionts as Potential Cofactors in Cancer Processes", Explore, Vol. 7, no. 6, 1997.

2 http://biomedx.com/microscopes/rrintro/rr2.html

Cities of Sodom & Gomorrah

THE CITIES OF SODOM AND GOMORRAH

The Prophet Lut (as) lived at the same time as the Prophet Ibrahim (as) and was sent as a Messenger to a neighbouring tribe to the Prophet Ibrahim (as). That tribe, according to the Qur'an, practiced a perversion never before seen in the world: homosexuality. When the Prophet Lut (as) told the people to abandon one of the greatest sins and delivered to them the message of Allah, they rejected him. They denied that he was a Prophet and continued with their horrid lifestyle. As a result of this, the tribe was destroyed in a terrible disaster by Allah.

And Lut, when he said to his people, "Do you commit an obscenity not perpetrated before you by anyone in all the worlds? You come with lust to men instead of women. You are indeed a depraved people." (Qur'an, 7:80-81)

We rained down a rain upon them. See the final fate of the evildoers! (Qur'an, 7:84)

[Our Messengers said to Lut,] "We will bring down on the inhabitants of this city a devastating punishment from heaven because of their deviance." We have left a Clear Sign of them behind for people who use their intellect. (Qur'an, 29:34-35)

This city, in which the Prophet Lut (as) lived and which was later destroyed, is called "Sodom" in the Old Testament. It appears that this people, who lived to the north of the Red Sea, was destroyed in a manner compatible with the description in the Qur'an. Archaeological excavations have revealed that the city lay close to the Dead Sea on the present-day Israeli-Jordanian border. According to scientists, the area is covered in large deposits of sulphur. For this reason, no life in the form of animals or plants is to be found there and the region stands as a symbol of destruction.

[He is] the Lord of the heavens and the earth and everything in between them, if you are people with certainty. There is no god but Him—He gives life and causes to die—your Lord and the Lord of your forefathers, the previous peoples.(Qur’an, 44:7-8)
Sulphur is an element which appears as a result of volcanic eruptions. Indeed, there is clear evidence in the Qur'an that the method of destruction was earthquake and volcanic eruptions. The German archaeologist Werner Keller says this about the region:
Together with the base of this mighty fissure, which runs precisely through this area, the Vale of Siddim, including Sodom and Gomorrah, plunged one day into the abyss. Their destruction came about through a great earthquake which was probably accompanied by explosions, lightning, issue of natural gas and general conflagration… The subsidence released volcanic forces that had been lying dormant deep down along the whole length of the fracture. In the upper valley of the Jordan near Bashan there are still towering craters of extinct volcanoes; great stretches of lava and deep layers of basalt have been deposited on the limestone surface.

These layers of lava and basalt are the most important evidence showing that a volcanic eruption and earthquake once took place there. In any event Lake Lut, otherwise known as the Dead Sea, lies directly above a seismically active region-in other words, an earthquake belt:

The base of the dead sea is located with a tectonic rooted downfall. This valley is located in a tension stretching between the Taberiye Lake in the north, and mid of Arabah Valley in the south.230

The technical aspect of the disaster suffered by the people of Lut has been revealed in studies carried out by geologists. These have shown that the earthquake which wiped out the people of Lut came about as the result of a very long fault line. The Jordan River drops a total of 180 metres during its 190 km course. This, and the fact that the Dead Sea is 400 metres below sea level, combined to prove that that there once took place a major geological event in and around this area.

This interesting structure of the Jordan River and the Dead Sea comprise only part of the crack or fissure which passes through this region. It begins at the slopes of the Toros Mountains and runs southward past the southern shores of the Dead Sea, through the Arabian Desert, reaching the Gulf of Aqaba, from where it crosses the Red Sea before coming to an end in Africa. There is major volcanic activity in those areas through which the line passes. In fact, this occurs to such an extent that black basalt and lava can be found in the Mountains of Galilee in Israel, in part of the high plateaus in Jordan, the Gulf of Aqaba and other areas.

All these remains and geographical features show that there was a major geological event at the Dead Sea.

The December 1957 edition of National Geographic magazine contained these statements on the subject:

The mount of Sodom, a barren wasteland, rises sharply above the dead sea. No one has ever found the destroyed cities of Sodom and Gomorrah, but scholars believe that they stood in the Vale of Siddim across from these cliffs. Possibly flood waters of the Dead Sea engulfed them following an earthquake.

One of the pieces of information regarding this destroyed city is-as revealed in Surat al-Hijr 76-that these cities are still on the main line. Geographers have identified this region as being on a line to the south-east of the Dead Sea, extending from the Arabian peninsula to Syria and Egypt.

We turned the place completely upside down and rained down on them stones of hard-baked clay. There are certainly Signs in that for the discerning. They were beside a road which still exists. There is certainly a Sign in that for the believers. (Qur'an, 15:74-77)

229. Keller, Und die Bibel hat doch recht, 75-76.
230. “Le Monde de la Bible” (The World of the Bible), Archeologie et Histoire, July-August 1993.
231. G. Ernest Wright, “Bringing Old Testament Times to Life,” National Geographic 112, December 1957, 883.

Prophet Moses (pbuh) & ses's splitting in two

 PROPHET MUSA (AS) AND SEA'S SPLITTING IN TWO

The kings of Egypt-known as "Pharaohs" (or "Fir'awn" in the Arabic of the Qur'an)-regarded themselves as divine in the polytheistic, superstitious religion of ancient Egypt. At a time when the people of Egypt favoured a superstitious belief system over a divine belief system-the same era in which when the Children of Israel were enslaved-Allah sent the Prophet Musa (as) as a messenger to the tribe of Egypt.

However, Pharaoh and his court, and the people of Egypt in general, almost universally refused to abandon their idolatrous beliefs when the Prophet Musa (as) called them to divine religion and the Oneness of Allah. The Prophet Musa (as) revealed to Pharaoh and his courtiers that they should avoid false worship, warning them of Allah's wrath. In response to this, they rose up and slandered the Prophet Musa (as): They accused him of being mad, of being a sorcerer and of falsehood. Pharaoh and his people refused to submit to the Prophet Musa (as) even though many troubles were visited upon them. They refused to accept Allah as the only God. They even held the Prophet Musa (as) responsible for what had befallen them and sought to exile him from Egypt. In the Qur'an, Allah makes this reference to the Prophet Musa (as) and the believers with him:

We revealed to Musa: "Travel with Our servants by night. You will certainly be pursued." Pharaoh sent marshals into the cities: "These people are a small group and we find them irritating and we constitute a vigilant majority." We expelled them from gardens and springs, from treasures and a splendid situation. So it was! And We bequeathed them to the tribe of Israel. So they pursued them towards the east. (Qur'an, 26:52-60)

As revealed in the Qur'an, the two communities met at the edge of the sea following this pursuit. Allah divided the sea and saved the Prophet Musa (as) and the believers with him, destroying Pharaoh and his people. This aid from Allah is revealed thus:

So We revealed to Musa, "Strike the sea with your staff." And it split in two, each part like a towering cliff. And We brought the others right up to it. We rescued Musa and all those who were with him. Then We drowned the rest. There is certainly a Sign in that yet most of them are not believers. Truly your Lord is the Almighty, the Most Merciful. (Qur'an, 26:63-68)

In connection with this subject, the following account has recently been found in papyruses from the time of Pharaoh:

From Amenamoni, head of the protective books of the white room of the palace, to the scribe Penterhor:

When this letter reaches you and has been read point by point, surrender your heart to the sharpest pain, like a leaf before the storm, when you learn of the sorrowful disaster of the drowning in the whirlpool…Calamity struck him suddenly and inescapably. Depict the destruction of the lords, the lord of the tribes, the king of the east and the west. The sleep in the waters has made something helpless out of something great. What news can compare to the news I have sent you?

This miracle, experienced by the Prophet Musa (as) and the Children of Israel as they crossed the Red Sea, has been the subject of many studies. Archaeological investigations have established not only the path taken to the Red Sea after leaving Egypt, but also that the place where Pharaoh and the Prophet Musa (as) and his tribe met was one surrounded by mountains. (Allah knows best.)

Following a great deal of study and investigation taking this as the starting point, scientists came to striking conclusions with regard to how the sea was divided into two. These conclusions are in full agreement with those revealed in the Qur'an. The way that historical events described in the Qur'an are today illuminated by historical records is without doubt an important miracle of the book of Islam.

Naum Volzinger and Alexei Androsov, two Russian mathematicians, proved that the Prophet Musa (as) could indeed have parted the sea. Unlike those scientists who concentrated on the probability of such a miracle, the Russian mathematicians investigated the conditions that might have led to the miracle. In turn, this led to the confirmation of the miracle itself.

According to the study which was published in the Bulletin of the Russian Academy of Sciences, there was a reef, which was close to the surface in the Red Sea at that time. From there, the scientists set about establishing the speed of the wind and the strength of the storm needed to leave the reef high and dry at low tide. As a result, it became apparent that a wind speed of 30 metres per second would have caused the sea to retract, leaving the reef exposed. Naum Volzinger, of the Institute of Oceanography of the Russian Academy of Sciences, stated that "if the [east] wind blew all night at a speed of 30 metres per second then the reef would be dry." He also said that "it would take the Jews-there were 600,000 of them-four hours to cross the 7 kilometre reef that runs from one coast to another… then, in half an hour, the waters would come back." In addition, Volzinger said that he and his colleague Androsov studied the issue strictly from Isaac Newton's point of view. As he put it, "I am convinced that God rules the Earth through the laws of physics."

It must not be forgotten that there is always a possibility of this natural phenomenon taking place. If Allah so desires, this miracle can take place again when the requisite conditions-such as windspeed, time and place-are met. However, the truly miraculous aspect here is the fact that these events took place just when the Prophet Musa (as) and his tribe were about to be vanquished. The fact that the waters withdrew just as the Prophet Musa (as) and the community with him were about to cross them-not to mention the way that the waters returned just as Pharaoh and his army were crossing-is a clear example of the aid that Allah gives to the faithful. Indeed, the way that the Prophet Musa (as) relied on and trusted in Allah is an example of the most pleasing moral values:

And when the two hosts came into sight of one another Musa's companions said, "We will surely be overtaken!" He said, "Never! My Lord is with me and He will guide me." (Qur'an, 26:61-62)

202. British Museum, Egyptian Papyri No.6.
203. Galina Stolyarova, "City Scientists Say Red-Sea Miracle Can Be Explained," The St. Petersburg Times, 20 January 2004, www.sptimes.ru/archive/times/936/top/t_11445.htm; Galina Stolyarova, "Mathematicians Dissect a Miracle," The Moscow Times, 21 January 2004, www.themoscowtimes.com/stories/2004/01/21/003.html.
204. Ibid.

THE PEOPLE OF SABA AND THE ARIM FLOOD

THE PEOPLE OF SABA AND THE ARIM FLOOD

Many centuries ago, the community of Saba was one of the four biggest civilisations which lived in South Arabia Historical sources relating to Saba usually say that this was a culture akin to that of the Phoenicians. It was particularly involved in commercial activities. The Sabaeans are recognised by historians as a civilised and cultured people. In the inscriptions of the rulers of Saba, words such as "restore," "dedicate" and "construct" are frequently used. The Ma'rib Dam, which is one of the most important monuments of this people, is an important indication of the technological level this people had reached.
The Sabaean state had one of the strongest armies in the region and was able to adopt an expansionist policy thanks to its potent army. With its advanced culture and army, the Sabaean state was without question one of the "super powers" of the region at the time. This extraordinarily strong army of the Sabaean state is also described in the Qur'an. An expression of the commanders of the Saba army related in the Qur'an, shows the extent of the confidence this army had in itself. The commanders call out to the female ruler (Queen) of the state:

… "We possess strength and we possess great force. But the matter is in your hands so consider what you command." (Qur'an, 27:33)

Because of the Ma'rib Dam which had been constructed, with the help of quite advanced technology for that particular era, the people of Saba possessed an enormous irrigation capacity. The fertile soil they acquired by virtue of this technique and their control over the trade route permitted them a splendid lifestyle, full of well-being. However, instead of giving thanks to Allah for all this, the Qur'an informs us that they actually "turned away from Him." Furthermore, they refused to heed the warnings and reminders issued to them. Because of these poor moral values, they merited punishment in the sight of Allah and their dams collapsed and the flood of Arim ruined all their lands.

The capital city of the Sabaean state was Ma'rib, which was extremely wealthy thanks to its advantageous geographical position. The capital city was very close to the River Adhanah. The point where the river reached Jabal Balaq was very suitable for the construction of a dam. Making use of this condition, the Sabaean people constructed a dam at this location at the time when their civilisation was first established, and they began irrigation. As a result, they reached a very high level of economic prosperity. The capital city, Ma'rib, was one of the most developed cities of the time. The Greek writer Pliny, who had visited the region and greatly praised it, also mentioned how green this region was.
The height of the dam in Ma'rib was 16 metres, its width was 60 metres and its length was 620 metres. According to the calculations, the total area that could be irrigated by the dam was 9,600 hectares, of which 5,300 hectares belonged to the southern plain. The remaining part belonged to the northern plain. These two plains were referred to as "Ma'rib and two plains" in the Sabaean inscriptions. The expression in the Qur'an, "two gardens to the right and to the left," points to the imposing gardens and vineyards in these two valleys. Thanks to this dam and its irrigation systems, the region became famous as the best irrigated and most fruitful area of Yemen. The Frenchman J. Holevy and the Austrian Glaser proved from written documents that the Ma'rib dam existed since ancient times. In documents written in the Himer dialect, it is related that this dam rendered the territory very productive and was the heartbeat of the economy.
The dam that collapsed in 542 led to the flood of Arim and caused enormous damage. The vineyards, orchards and fields cultivated for hundreds of years by the people of Saba were completely destroyed. Following the collapse of the dam, the people of Saba appear to have entered a period of rapid contraction, at the end of which the Sabaean state came to an end.
When we examine the Qur'an in the light of the historical data above, we observe that there is very substantial agreement here. Archaeological findings and the historical data both verify what is recorded in the Qur'an. As mentioned in the verse, these people, who did not listen to the exhortations of their Prophet and who rejected faith, were in the end punished with a dreadful flood. This flood is described in the Qur'an in the following verses:

There was, for Saba, aforetime, a Sign in their home-land-two Gardens to the right and to the left. "Eat of the Sustenance [provided] by your Lord, and be grateful to Him: a territory fair and happy, and a Lord Oft-Forgiving!" But they turned away [from Allah], and We sent against them the Flood [released] from the dams, and We converted their two garden [rows] into "gardens" producing bitter fruit, and tamarisks, and some few [stunted] Lote-trees. That was the Requital We gave them because they ungratefully rejected Faith: And never do We give [such] requital except to such as are ungrateful rejecters. (Qur'an, 34:15-17)

 

In the Qur'an, the punishment sent to the Sabaean people is named as "Sayl al-Arim" which means the "flood of Arim." This expression used in the Qur'an also tells us the manner in which this disaster occurred. The word "Arim" means dam or barrier. The expression "Sayl al-Arim" describes a flood that came about with the collapse of this barrier. Islamic commentators have resolved the issue of time and place being guided by the terms used in the Qur'an about the flood of Arim. For example, Mawdudi writes in his commentary:
As also used in the expression, Sayl al-Arim, the word "arim" is derived from the word "arimen" used in the Southern Arabic dialect, which means "dam, barrier." In the ruins unearthed in the excavations made in Yemen, this word was seen to be frequently used in this meaning. For example, in the inscriptions which was ordered by Yemen's Habesh monarch, Ebrehe (Abraha), after the restoration of the big Ma'rib wall in 542 and 543 AD, this word was used to mean dam (barrier) time and again. So, the expression of Sayl al- Arim means "a flood disaster which occurs after the destruction of a dam." "… We converted their two garden [rows] into gardens producing bitter fruit, and tamarisks, and some few [stunted] Lote-trees" 

(Qur'an, 34:16). 

That is, after the collapse of the dam-wall, all the country was inundated by the flood. The canals that had been dug by the Sabaean people, and the wall that had been constructed by building barriers between the mountains, were destroyed and the irrigation system fell apart. As a result, the territory, which was like a garden before, turned into a jungle. There was no fruit left but the cherry-like fruit of little stumpy trees.
The Christian archaeologist Werner Keller, writer of "Und Die Bible Hat Doch Recht" (The Holy Book Was Right), accepted that the flood of Arim occurred according to the description of the Qur'an and wrote that the existence of such a dam and the destruction of the whole country by its collapse proves that the example given in the Qur'an about the people of the garden was indeed realised.
After the disaster of the Arim flood, the region started to turn into a desert and the Sabaean people lost their most important source of income. Their lands, which had been agricultural havens of prosperity and financial strength, disappeared. The people, who had not heeded the call of Allah to believe in Him and to be grateful to Him, were in the end punished with this disaster.

232. Hommel, Explorations in Bible Lands (Philadelphia: 1903), 739.
233. "Marib", Islam Ansiklopedisi: Islam Alemi, Tarihi, Cografya, Etnografya ve Bibliyografya Lugati (Encyclopedia of Islam: Dictionary of Islamic World, History, Geography, Ethnography, and Bibliography,) 7, 323-339.
234. Mevdudi, Tefhimül Kuran (An Honoring of the Qur’an) 4, Insan Yayinlari (Istanbul), 517.
235. Keller, Und die Bibel hat doch recht, 230

Oxidation in the blood

OXIDATION IN THE BLOOD

No indeed! Rather what they have earned has rusted up their hearts. (Surat al-Mutaffifin, 14) 

The term ‘rusted’ used to describe hearts in verse of Surat al-Mutaffifin may be a reference to biochemical reaction that takes place in the heart. (Allah knows the truth.) Rust is the result of iron reacting with oxygen – oxidation. The oxygen we absorb from the air is carried through the body thanks to the iron in the hemoglobin in the blood. During this process, the oxygen reacts with the iron in the blood. This means there is a constant process resembling rusting in the blood in the human body, and therefore in the heart, the center of the circulation system.



An excess of iron in the blood can even lead to premature aging in all the body’s cells by causing rust-like oxidation.1 In the disease known as ‘hemochromatosis,’ caused by excess iron accumulating in the body, iron produces a toxic effect and causes organs such as the liver to collapse. Since this is the result of iron oxidation, this phenomenon is often described as organs ‘rusting’ or ‘rust accumulation’ in organs.2 In the journal Science News Dr. Sharon McDonnell describes the iron oxidation in cells making up organs as ‘rusting’.3

Another reference says this about the disease: “…those with hemochromatosis absorb iron, storing it in their organs. Over time, it accumulates in toxic amounts, causing organs to fail because they literally rust.” 4
It is only possible to identify the reaction of iron with oxygen in the body – oxidation in the blood – in laboratories with highly advanced equipment. The fact that such a comparison, so compatible with the scientific data, appears in the Qur’an is an evident miracle, given the time when the Qur’an was revealed. The fact that the Qur’an also contains countless other pieces of information all in agreement with modern science is another sign that it is the revelation of Omniscient Allah, our Lord and the Creator of all things.
1 E. Griffiths, Iron and Infection, John Wiley & Sons, New York, 1987, pp. 1-25; http://www.lewrockwell.com/orig/sardi10.html
2 Jane E. Brody, The New York Times, "Personal Health", 5 March 1997.
3 Kathleen Fackelmann, Science News, "Rusty origins: researchers identify the gene for iron-overload disease - hereditary hemochromatosis", 18 January 1997.

4 Deborah Weisberg, Post Gazette, "New center treats victims of chronic iron poisoning", 10 November 1998; http://www.post-gazette.com/healthscience/19981110hemo1.asp

Sun's hydrogen & helium

THE SUN’S HYDROGEN AND HELIUM CONTENT

The Sun is made up of 70% hydrogen (H) and 28% helium (He) atoms.1 Other substances make up less than 2%. Six hundred million tons of hydrogen are converted into 596 million tons of helium in the Sun every second. The remaining 4 million tons is given off as heat and light energy.2 In that sense, the first thing that comes to mind when the Sun is mentioned is the letters H (hydrogen) and He (helium) that stand for the Sun. All the 15 verses in Surat ash-Shams of the Qur’an (Shams meaning ‘Sun’), end in the letters H and E. The Arabic equivalent of these letters are:

(The Arabic letter He)

(The Arabic letter Elif)

  

The Arabic form of the verses in Surat ash-Shams and the final letters thereof can be seen below:

As can be seen, all the verses in Surat ash-Shams end in the letters He and Elif. The letter H stands for hydrogen and He for helium. No other Surah in the Qur’an ends in the letters HE in every verse from beginning to end. It is therefore extremely striking how only this Surah in the Qur’an ends in such a sequence of letters. Surat ash-Shams’s number, 91, is also highly significant. Apart from hydrogen, there are 91 other elements in the Periodic Table, and these are made up of hydrogen elements.  To put it another way, all atoms. From hydrogen, the lightest element, to the heaviest are intra-atomic combinations of hydrogen atoms. For that reason, the H (hydrogen) atom in the Sun makes up the other 91 elements in nature.3

Almighty Allah has created all the details in nature, and is still creating them. All our knowledge about such details is permitted to us in order for us to comprehend the omniscience of our Lord. In one verse, we are told:

Allah, there is no god but Him, the Living, the Self-Sustaining. He is not subject to drowsiness or sleep. Everything in the heavens and the earth belongs to Him. Who can intercede with Him except by His permission? He knows what is before them and what is behind them but they cannot grasp any of His knowledge save what He wills. His Footstool encompasses the heavens and the earth and their preservation does not tire Him. He is the Most High, the Magnificent. (Surat al-Baqara, 255)

1 http://observe.arc.nasa.gov/nasa/exhibits/sun/sun_2.html; http://www.nineplanets.org/sol.html

2 http://observe.arc.nasa.gov/nasa/exhibits/sun/sun_5.html

3 http://periodic.lanl.gov/elements/1.html; William D. Harkins, "The Abundance of the Elements in Relation to the Hydrogen-Helium Structure of the Atoms", Proceedings of the National Academy of Sciences of USA, April 1916, Vol. 4, pp. 216–224.

Fossilization & iron content

FOSSILIZATION & IRON CONTENT 

“They say, ‘What! When we are bones and crumbled dust, will we then be raised up as a new creation!’ Say: ‘It would not matter if you were rock or iron or indeed any created thing that you think is harder still!’ They will say, ‘Who will bring us back again?’ Say: ‘He Who brought you into being in the first place’...” (Surat al-Isra’, 49-51)

The above verses are a reference to people’s dead bodies petrifying and turning into iron. Living tissue is not preserved over millions of years. That is why it is only possible to see things that lived a long time in the past once they have been fossilized. After they die, living things can be preserved for years by fossilization, by their bodies turning into stone under the ground. The word “fossil” refersto “the preservation of a living thing by petrification,” by its turning into stone.
Iron is preserved undamaged in the body as it fossilized. Human beings need to consume an average of 10-15 milligrams a day in order to be healthy. Any excess iron consumed is stored in the liver. In addition, the protein transferrin in blood plasma also carries a certain amount of iron.1 The reference in the above verse to the presence of iron in the remains of the human body is exceedingly wise from that point of view. 


Research has also shown the presence of “pyrite,” (FeS₂) a compound of iron and sulfur, in fossils.2 The iron mineral pyrite forms very easily during the degradation of organic substances. It is therefore generally found in fossil shells and is capable of damaging the fossils since it can react with oxygen and water. The words “crumbled dust” in the verse may be a reference to “pyrite degradation,” which leads to the fragmentation and collapse of a fossil as pyrite reacts with water and oxygen.3 Allah knows the truth.

Another fact confirmed by recent findings is that matter constantly seeks the most stable state. Therefore, given sufficient time, all matter will eventually turn into iron. Iron is the most stable state of nuclear matter, and cosmological models predict a stage in which everything will turn into iron as a result of nuclear fusion and nuclear fission reactions.4 In his book In Search of Schrodinger's Cat: Quantum Physics And Reality, the astrophysicist John Gribbon describes how iron is the most desirable state of matter and how all matter in the universe wants to turn into iron.5

The revelation in the Qur’an that human beings petrify and fossilize and turn into iron is a fact that has now been scientifically confirmed. In the same way that no archaeological, paleontological, geological or astronomical research was possible at the time the Qur’an was revealed, neither was it possible to identify the elements using an electron miscroscope. For that point of view, the facts revealed in the above verse once more confirm that the Qur’an is a divine text. 
1 http://www.healthatoz.com/healthatoz/Atoz/ency/iron_tests.jsp
2 http://www.tmm.utexas.edu/npl/glossary.htm
3 http://www.cr.nps.gov/museum/publications/conserveogram/11-02.pdf
4http://www.free-definition.com/Iron.html; http://en.wikipedia.org/wiki/Iron

5 http://www.physicsforums.com/archive/index.php/t-34407.html

Miracle of fire & wood

THE MIRACLE OF FIRE AND WOOD, THAT CANNOT BE OBTAINED ARTIFICIALLY 

  
Have you thought about the fire that you light? Is it you who make the trees that fuel it grow or are We the Grower? We have made it to be a reminder and a comfort for travellers in the wild. So glorify the name of your Lord, the Magnificent! (Surat al-Waqi ‘a, 71-74)

One of the chemical substances mainly responsible for the structure of wood is “lignocellulose.” This substance is a compound of the materials known as “lignin” and “cellulose” that give wood its hardness. In terms of chemicalstructure, wood is made up of 50% cellulose, 25% hemicelluloses and 25% lignin.1 An analysis of these substances’ chemical formulae reveals three vital elements: hydrogen, oxygen and carbon.


Hydrogen, oxygen and carbon are the building blocks of millions of substances in nature. But as a miracle from Allah, these three also combine to give rise to the substance “lignocellulose” found in plants. Although scientists know that they contain these substances they are unable to reproduce this special material in plants.  Although these elements found in large amounts in nature can easily be obtained, scientists have been unable to obtain a single piece of wood by artificial means, despite having countless examples before them. Yet all the trees we see around us have been ceaselessly producing this compound for millions of years by combining oxygen, carbon, water and sunlight.

One of the compounds in lignocellulose is water, expressed by the formula H2O. The fact that wood is one of the most flammable materials despite containing a large amount of water is a most special state of affairs. The above verse is very wise in noting that wood cannot be made by human beings, by fire. Thanks to these compounds and the water it contains, wood is one of the most important fuels of fire.


Trees are an important sphere of scientific research, and inspire scientists, who are still struggling to grasp all the details in their creation, in a number of areas.  The complex structures of the cells that constitute trees have still not been fully unraveled, despite advances in technology and intensive research. The Forestry Commission of Great Britain, one of the world’s leading forestry research institutions, says the following under the heading "Lack of Information on the Chemistry and Structure of Wood Fibres":
Despite the knowledge resulting from earlier and ongoing research, there still exists a lack of information on the chemistry and structure of wood fibres. Large variations can be found within a single tree, from the pith to the bark and from the base to the top of a tree. Often the chemistry and structure of a wood cell are extremely heterogeneous and difficult to investigate with conventional techniques.2
A paper in the scientific journal Plant Physiology titled "Our Understanding of How Wood Develops is not Complete" describes the limited knowledge of the subject that scientists possess: 
Considering the important role that wood is foreseen to play in the near future, it is surprising to see that our understanding of how wood develops is far from complete. With a few exceptions, very little is known about the cellular, molecular, and developmental processes that underlie wood formation. Xylogenesis represents an example of cell differentiation in an exceptionally complex form. This process is controlled by a wide variety of factors both exogenous (photoperiod and temperature) and endogenous (phytohormones) and by interaction between them. It is driven by the coordinated expression of numerous structural genes (some of known function) involved in cell origination, differentiation, programmed cell death, and heartwood (HW) formation and by virtually unknown regulatory genes orches trating this ordered developmental sequence. The presence of gene families and the extreme plasticity of the metabolism involved (as exemplified by the unusual behavior of plants with transformed cell walls; for review, see Fagard et al., 2000) add a further complexity to our understanding of the process of wood formation.3
The extraordinary creation in wood is emphasized thus in another scientific journal, Annals of Botany:
Wood formation is a highly complicated process involving an unbelievable variety of metabolic steps in the roots, stem and crown of shrubs and trees. At the centre of these processes is cambial activity which results in the release of young woody cells that undergo maturation until autolysis of the protoplast, indicating the final developmental stage. Later on, in various tree species, woody cells become further modified by an additional process called heartwood formation. The properties of wood that make it an appropriate raw material for many purposes are largely determined by the specific architecture of the cell walls. Difficulties in investigating these many developmental stages appear when routine techniques, which work well for soft plant tissues, are applied. Therefore, in most cases, these techniques need modification or the use of completely revised protocols to yield good results for woody tissues.4
These details in the creation of wood remind us, as set out in Surat al-Waqi ‘a, that wood cannot be made by human beings.  Just a few of the inimitable features of wood, which cannot be produced artificially, are as follows:

Wood, a Resistant Material

The hard and resistant nature of wood is the result of the cellulose fibers it contains. Because cellulose is hard and insoluble in water. It is this property of cellulose that makes the use of wood in construction so advantageous. Cellulose, described as a “contractible and incomparable substance,” has for centuries been used a great deal more than other materials in keeping wooden buildings standing, other buildings, bridges and many other structures.
Wood consists of parallel columns made up of convex cells laid end to end. These are surrounded by cellulose fibers in spiral form. In addition, these cells are contained in “lignin,” a substance made from a complex, polymer structure resin. These spirally enclosed layers make up 80% of the thickness of the cell wall and are the part bearing the main load. When a wood cell collapses internally it absorbs the shock of a blow by detatching itself from the surrounding cells. Even when such collapses causes a crack along the length of the fiber, the wood remains unharmed. That is why wood is strong enough to bear specific loads even if it is broken.

In terms of absorbing the energy of low-speed blows and reducing the damage therefrom, wood is a most important material.  The Second World War plane known as the “Mosquito” was made by compressing wood between strips of fiber board, making it the most damage-resistant plane of its time. The hardness and resistant nature of wood make it a very reliable material. Because wood breaks or cracks slowly enough to be visible from the outside, and that gives people enough time to take the necessary precautions .5

A material based on the structure of wood can be up to 50 times more resistant than other synthetic materials in use today.6 This unique structure of wood is today used in materials developed to protect against the impact of high speed and destructive fragments such as bombs and bullets. But scientists have never been able to replicate a piece of wood with all its many attributes. Every detail in the creation of wood, - the thickness of the internal layers, their level of compression, the number of vessels, their layout and the materials inside it, have been specialy created to result in that resistance.

The Hydraulic System That Raises Water Many Meters against the Force of Gravity

The dead part of wood, the “xylem,” contains hollow channels. These, also known as “wood vessels,” consist of inanimate cells that gradually lose their nuclei and cytoplasms piled one on top of the other.  Long, thin wood vessels form when the membranes between the cells dissolve and disappear.

Roots spreading out beneath the soil carry the water and minerals the plant needs upward through these tissues and transmit them as far as the leaves. The way the roots absorb the water in the ground is literally reminiscent of the test bore technique. The roots have no engines to initiate the water absorption process. Neither do they have any technical equipment with which to pump water and minerals for distances of up to several meters. But the roots absorb the water in the depths of the soil by spreading over a very wide area.

This lifting process that the plant performs so flawlessly is in fact an exceedingly complex one. Yet this system has still not yet been fully understood, even in these days of high technology and space travel. The present of a “hydraulic system: in plants was determined some two centuries ago. But we still do not know how this action in defiance of the force of gravity takes place. The superior technology squeezed into such a confined space is just one of the examples demonstrating the incomparable knowledge of our Lord the creator of the system. Like everything in the universe, Almighty Allah created the transportation system in trees.

Roots Capable of Selecting Minerals from the Soil:

Plants draw all the mineral nutrients they need, such as potassium, phosphorus, calcium, magnesium and sulfur, from the soil. Since the substances are not found seprately in the soil, they absorb them as ions (positive/negatively charged atoms).  Of all the many inorganic ions in dissolved state in the soil, plants absorb only the 14 they need.

The iron concentration inside plant cells is 1,000 times greater than that in the soil outside.8 Under normal condition, an exchange of matter from a high density region to a lower density one will take place. But exactly the opposite happens in plant roots, and the ions in the soil are easily able to pass into the root cells.9

Because of this state of affairs that operates contrary to the pressure system, the plant uses a high level of energy in the pumping process. In addition, in the plant roots’ taking up ions from the soil, there needs to be an identification system that attracts only the wanted ions and repels the unwanted ones. This shows that the ion pumps in the root cells are no ordinary pumps, but possess the ability to select between ions. Bearing in mind that the cell in the plant roots are made up of atoms devoid of any intelligence or consciousness, one can better see what an extraordinary process ion selection truly is.

Photosynthesis: The Superior Technology in a Miniature Factory

It is not only the wood and root parts of trees that cannot be obtained by artificial means, but also the leaves.  Most important of the features that make leaves inimitable is their ability to make photosynthesis. Photosynthesis, one of the systems that scientists still do not fully understand, may be summarized as plants manufacturing their own nutrients. Thanks to the structure in plant cells that makes them able to make direct use of solar energy, they store solar energy, at the end of various complex processes, in the form of energy that can be used by human beings and animals. In addition, the photosynthetic energy stored in trees is also given off during burning. For example, the energy emitted by wood burned to heat a house is actually energy from the Sun stored during the formation of wood.10

The photosynthesis system, which operates like a miniature factory, takes place in an organelle known as the “chloroplast” inside the plant cell that gives the plant its green color. Chloroplasts are just one-thousandth of a millimeter in size, for which reason they can only be seen under the microscope. When solar energy falls on the leaf they transmit it to the layers inside it. Chlorophyls inside the choloplasts in the leaf cells convert this light energy into chemical energy. The plant obtaining this chemical energy immediately uses it in obtaining nutrients. It took scientists until the mid-20th century to obtain this information summarized in just a few lines here. Pages of chain reactions are written to describe the whole process of photosynthesis. But some links in the chain are still unknown. Yet plants have been performing these processes uninterruptedly for hundreds of millions of years, thus providing the Earth with food and oxygen. 
The fact that not a single cell constituting wood can be made by artificial means, and human beings’ helplessness in the face of dead wood cells, shows the presece of a sublime Creator. The properties of wood, about which many volumes could be written, their countless aspects that so inspire scientists, all reveal the sublime knowledge and intellect behind the creation of wood. This intelligence and knowledge manifested in wood belongs to Almighty Allah, the Creator and sole Lord of all things.

1 http://www.forestpathology.org/wood.html; Wood Chemistry and Anatomy, 2005.

2 http://www.forestresearch.gov.uk/fr/INFD-6FMCUS; The Research Agency of the Forestry Commission, 2007.

3 Christophe Plomion, Gregoire Leprovost, Alexia Stokes, "Wood Formation in Trees", Plant Physiology, December 2001, Vol. 127, pp. 1513–1523.

4 Uwe Schmitt, "Chaffey, N.J. ed. Wood formation in trees—cell and molecular biology techniques", Annals of Botany, 2002, Vol. 90, no. 4, pp. 545-546.

5 Julian Vincent, "Tricks of Nature", New Scientist, 17 August 1996, Vol. 151, no. 2043, p. 39.

6 Julian Vincent, "Tricks of Nature", New Scientist, 17 August 1996, Vol. 151, no. 2043, p. 40.

7 http://www.smddrums.com/woodcell.htm

8 Malcolm Wilkins, Plantwatching, Facts on File Publications, New York, 1988, p. 119.

9 William K. Purves, Gordon H. Orions, H. Craig Heller, Life, The Science of Biology, 4th edition, W.H. Freeman and Company, p. 724.

10 http://www.montana.edu/wwwpb/pubs/mt8405.html; Michael Vogel, "Heating with Wood: Principles of Combustion", 2003.

Aerodynamic forces

AERODYNAMIC FORCES & FLIGHT PROGRAMMED IN BIRDS

Do they not see the birds suspended in mid-air up in the sky? Nothing holds them there except Allah. There are certainly signs in that for people who believe. (Surat an-Nahl, 79)

Due to the force of gravity, all bodies left in the air will eventually fall to earth, either fast or slowly. Everything, living or otherwise, is subject to gravity. But as a miracle of Allah (God) birds are able to resist this force and fly upward and downward in the air. They maneuver in the air, and sometimes even fold their wings and glide through it. All details in birds, from their feathers to their lungs, from the arrangement of their feathers to the shape of their wings, are equipped with a special feature and order
intended to enable them to fly. A chick totally unaware of the act of flight and the laws of aerodynamics is born with the ability to fly. The chick launches itself downwards and begins to fly, just as if it knew its body was created for flight. This is not information that is taught subsequently or that a bird learns by trial and error. The way a bird knows it has the body structure needed to fly, finds the courage to launch itself into the air and then flies without hitting the ground all happens through Allah’s inspiration.

The Arabic word “yumsikuhunna” translated as “holds” in verse 79 of Surat an-Nahl means “not letting them go, taking them, catching them, or holding them.” The word is the present tense of the verse “amsaka,” meaning “to catch with the hand, hold and pull back.”  With this word, our Almighty Lord reveals that He holds the bird in the air and that it flies by His command. Bird flight is still the subject of wide-ranging research by scientists. Having observed the perfection in bird flight, scientists use the avian body and avian flight as direct models in producing such vehicle as airplanes and jets.

Verse 79 of Surat an-Nahl may in one way be indicating the way that birds comply with the aerodynamic laws created by Allah as they fly. (Allah knows the truth.) The science of aerodynamics studies the behavior of solid bodies in a fluid environment such as air. For example, as a plane moves through the air, various forces emerge that affect that movement. In order for the plane to move as planned and not to run into any unexpected forces or resistance, the plane is tested beforehand against the resistance exhibited by the air. Its movement is planned as a result of lengthy calculations, measurements and experiments.

The way that birds comply with the principles of aerodynamics continues to astonish scientists. Using no form of trial and error, they cope with the laws of aerodynamics in the most perfect manner. The use of the word " musakhkharatin" (suspended) in the verse to describe bird flight is exceedingly wise. Because it suggests that they have been “encouraged to a specific end, have had to do something, have submitted or bowed their heads, have bound themselves to Allah or have submitted to His laws”.  In that way, the verse may be indicating the way that aerodynamic laws have a determining influence on bird flight. (Allah knows the truth.)

At first sight there would appear to be nothing to make it difficult for birds to fly. But according to aerodynamics, any object flying in the air is subject to various different forces. The best-known of these are gravity, propulsion, drag and lift. In order for meaningful flight to take place, these forces have to be balanced. For example, if gravity is stronger than the other forces, the bird will fall to earth. That is why the word in the verse is the best possible expression of birds’ condition as they are subjected to these forces.  The presence in the Qur’an of expressions containing such information at a time when no science of aerodynamics or mechanics existed, once again reveals that the Qur’an is a divine text

(1) The air moving rapidly around the bird’s wings produces the lift force.  (2) The bird bends its wings in order to obtain greater lift force. The air flowing over the wings is thus accelerated. (3) If it inclines its wings upward at a very steep angle, air cannot easily flow to the upper parts of the wings and the bird loses speed and stalls. Through Allah’s inspiration, birds make use of the principles of aerodynamics as they fly. 2

In addition to the aerodynamic perfection in bird flight, scientists are also researching the migrations of thousands of kilometers that they make. Ornithologists have today concluded that these are literally programmed in them. The way that young birds are able to undertake long and arduous journeys with no guide or previous experience is the most obvious example of this. The Arabic word “musakhkharatin" in the verse quoted above implies “being encouraged toward a specific target, being taken under command, being taken under submission,” clearly revealing that birds obey the instructions they are given when following the directions set out for them. There is no possibility of birds, which are devoid of intellect and consciousness, managing to make their own calculations as they fly along.  Scientists today are agreed that these extraordinary abilities in birds are “pre-programmed” in them. This is set out in an article in the journal Science:
There is good evidence that young birds are equipped with endogenous migratory programs, which tell them roughly how many days and/or nights that they must fly, and in what direction.3
In his book La Puissance et la Fragilité, Prof. Pierre Jean Hamburger from René Descartes University describes the extraordinary 24,000-kilometer journey made by the shearwater that lives in the Pacific Ocean:
It sets out from the coast of Australia. From there it flies straight southward to the Pacific. Then it turns north and flies along the coast of Japan until reaching the Bering Sea where it can rest for a while. Following that break it sets off again, and this time heads south. Crossing the western coast of America, it arrives in California. It then crosses the Pacific to return to its starting point. The route and timing of this 15,000-mile (24,000-kilometer) figure ‘8’ journey it makes every year never change. The journey in question lasts a whole six months, always coming to an end in the third week of September on the island it left six months before, at the nest it left six months before. What comes next is even more astonishing; after their return, the birds clean their nests, mate, and lay a single egg over the last 10 days of October. The chicks hatch out two months later, grow very fast and are cared for over three months until their parents set out on that stupendous journey. Two weeks later; around the middle of April, it is time for the young birds to take wing on their own journey. They follow exactly the same route as that described above, with no guide. The explanation is so obvious: These birds must have all the directions for such a journey within the inherited characteristics passed on within the egg.  Some people may claim that birds navigate by the Sun and stars or follow the winds prevailing along their route on this journey out and back. But it is clear that these factors cannot determine the journey’s geographical and chronological accuracy.4
Prof. Peter Berthold is a famous ornithologist who has investigated bird migration for 20 years and president of the Max Planck Institute Ornithological Research Center in Germany. He says the following about bird migration:
Every year an estimated 50 billion birds make migratory journeys, along a network of routes that encompasses the whole world. Sometimes travelling tens of thousands of kilometers, crossing continents and oceans, migratory birds have become so well adapted to this task that they can traverse the largest deserts and seas, the highest mountains and expanses of ice... migratory birds have comprehensive, detailed, innate spatio-temporal programs for successful migration. Such programs evidently enable even young, inexperienced birds to migrate alone, with no adult guide, to the species- or population-specific winter quarters that they have never seen before. As will be explained further below, they do this by "vector" navigation: referring to a vector composed of a genetically predetermined migratory direction and to a time-plan, also genetically predetermined, for the course of migration... It follows that the departure time is programmed by genetic factors... But how do birds "know" the direction in which to migrate, so that they will reach their specific winter quarters? Here, again data have been obtained that point to direct genetic control mechanisms. It has long been suspected that migration directions are innate... when displaced from the normal starting point, and still more crucially, when tested in orientation cages, migratory birds showed directional preferences practically identical to the normal ones, even if they had never migrated before. Now a number of experiments have provided evidence of the genetic determination of migration direction... Even these directional changes are evidently programmed endogenously to a great extent... With an innate pattern of migratory activity, the birds possess a genetically determined migration schedule. In combination with genetically determined migratory directions, as mentioned above, it guides even inexperienced individuals, migrating for the first time, "automatically" to their previously unknown winter quarters (vector navigation, using a vector composed of a time- and a direction-plan).5
In conclusion, although scientists are unable to fully account for it, scientists still agree that migration is pre-programmed behavior that birds possess from birth. Journeys lasting thousands of kilometers, the preparations made for these flights and bird’s ability to find their way and navigate during flight all take place by our Lord’s choosing, as expressed in the above verse. The accuracy of all the information provided in the Qur’an is important evidence that this information has all been revealed by Allah.
1 http://www.drbonesshow.com/page6.html
2 From the book Birds and the Origin of Flight.
3 Rudiger Wehner, "Bird Navigation—Computing Orthodromes", Science, 12 January 2001, vol. 291, no. 5502, pp. 264–265.
4 Pierre Jean Hamburger, La Puissance et la Fragilité, Flammarion Pub., Paris, 1972.

5 Peter Berthold, "Bird Migration: Introductory Remarks and Overall Perspective", Torgos, 1998, Vol. 28, pp. 25-30; http://www.birds.org.il/show_item.asp?itemId=1211&levelId=811&template=209