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Dec 20, 2019 at 14:30 comment added Carl Kevinson @LeoS We often think of the air in a room as one item, but in reality it's like a ton of bouncy balls colliding with every surface and each other. Those collisions are what we are measuring when we measure "air pressure". Each molecule is very small, but there are a ton of them and they are moving quite fast. Some are faster and some are slower, but at room temperature, the average speed is on the order of 350 m/s. (780 mph, 1260 km/hr)
Dec 20, 2019 at 8:46 comment added Sergiy Lenzion @CarlKevinson Could you explain what phenomenon you are referring to in this phrase: "In fact, there are individual gas molecules impacting your eyeballs at hundreds of miles/kilometers per hour right now."?
Oct 23, 2019 at 23:20 comment added uhoh very similar question with four answers: Does “What happens beyond Kármán, stay beyond Kármán”?
Oct 23, 2019 at 20:05 review First posts
Oct 23, 2019 at 20:08
Oct 23, 2019 at 20:01 history answered Carl Kevinson CC BY-SA 4.0