Page 85 - A Chain of Miracles
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                                       H Harun Yahya
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              THE MIRACLE OF VISIBLE LIGHT


                  Not all the stars and other sources of light in the universe
              emit the same type of radiation. Different types of radiation are

              classified according to their respective wavelengths. They fall
              along a huge spectrum, with gamma rays being the shortest and
              radio waves the longest. The difference between these shortest
              and longest waves is 10 25  (ten times billion times billion times
              billion). Miraculously, most of the Sun’s radiation lies in the
              same bundle of wavelengths within this vast spectrum, because
              only that narrow band contains the radiation necessary to sup-
              port life.
                  The vastness of this spectrum becomes clearer when you re-
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              alize that the shortest wavelength is 10 times shorter than the
                        25
              longest. 10 is written out as a 1 with 25 zeros following it, like
              this: 10,000,000,000,000,000,000,000,000. To fully comprehend the
              magnitude of this number, it helps to make some comparisons.
              For instance, the 4.5 billion years that have passed since the
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              Earth’s creation can be converted to 10 seconds. If you wanted
                           25
              to count to 10 , you would have to count day and night for a pe-
              riod 100 million times longer than the age of the Earth. If we
                            25
              were to pile 10 playing cards on top of one another, we would
              leave the Milky Way behind and cover about half the distance
              of the known universe!  38
                  The different wavelengths in the universe are spread across
              that wide a spectrum, but within it, interestingly, our Sun covers
              only the narrowest bandwidth. 70% of the Sun’s radiation has
              wavelengths between 0.3 and 1.5 microns. Within this narrow






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