3 ms·
I was surprised by how much I was surprised by the very first fact -- that air molecules move around at extremely high speed of 450m/s, but just bump into each
by Erwin 4y ago
I was surprised by how much I was surprised by the very first fact -- that air molecules move around at extremely high speed of 450m/s, but just bump into each other cancelling this speed out, and this speed is based on pressure & temperature.
And it's due to this speed, despite air's low density, the force air exerts is enormous -- equivalent to 10 tons per square meter. Somehow, the human sandwich does not explode nor implode due to equivalent pressure coming from the other side and inside.
- zeroonetwothree 4y agoNote that diving to a depth of only 10m will double the external pressure on your body yet humans can easily survive this. Indeed the all time record is >300m which is something like 32x pressure. So it’s not merely that there is equivalent pressure from inside.
- TremendousJudge 4y ago>this speed is based on pressure & temperature I'd say that pressure & temperature are a consequence of the speed, not the other way around