Page 96 - A Chain of Miracles

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A A Chain of Miracles

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The atmosphere admits rays that are beneficial to us and prevents harmful
ones from passing, which requires an extraordinary selectivity. So ideal for
life, such selectivity is the work of a flawless Creation.

possible range of 10 25 different wavelengths, the Sun emits the
type of radiation that is beneficial for us; and the atmosphere al-
lows only it to pass through. (All but a fraction of the little ul-
traviolet radiation the Sun emits is prevented from passing the
ozone layer.)
Interestingly, like the atmosphere, water is selective in its
penetrability. Only visible light can penetrate it. Infrared radia-
tion (heat energy) can penetrate miles of air, but only a few mil-

limeters of water. Therefore, only the top few millimeters on the

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