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The Scientific Fact:
The formation of the
atmosphere was unknown until Pascal proved its existence
in 1648. He proved that air pressure decreases as we go
higher above sea level.
Later on it was
discovered that air in the lower layers of the
atmosphere is denser. About 50 % of the air mass is
located between the surface of the earth and 20,000 feet
above sea level, and 90% is located between the surface
of the earth and 50,000 feet above sea level.
Therefore, density
decreases vertically until air reaches its utmost
rarefaction (minimum pressure) in the higher layers of
the atmosphere before it completely vanishes in outer
space.
When a human being goes
higher than ten thousand (10,000) feet above sea level,
it does not cause him any serious problem, as the
respiratory system can handle the height of 10,000 to
25,000 feet above sea level; however, if a person goes
into outer space, the amount of pressure and oxygen
decrease causing the closing of the chest and dyspnea
(shortness of breath). Then, the breathing process
becomes difficult because of the lack of oxygen (oxygen
starvation) and the respiratory system completely fails,
causing death. |