The Atmosphere

Air and Air Pressure

Is air really “thin”

Like anything else, “thin” is a relative term. Compared to the vacuum of space, air is very dense, but compared to a chunk of marble, or even a bottle of water, it is very thin indeed. For something in a gaseous state, air is actually quite thick. At sea level, molecules in the air are spaced only about one millionth of an inch apart.


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