cowox93112

cowox93112 t1_izb8wyd wrote

The reason people feel most comfortable around 25C (77F) is that this is roughly the equilibrium point, where the heat passively dissipated (no sweating, no wind blowing etc.) into the environment balances with the waste heat generated by the metabolism.

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cowox93112 t1_iwp22tg wrote

Free fall is equivalent to being in a region of space without gravity. Let's also assume a vacuum around it such that we can neglect external air pressure etc.

There is one force left, namely cohesion. It will attempt to minimize the droplet surface, morphing the it into a spherical shape. The pressure at the center is given by P= 4 gamma/R with R being the droplet radius. It is tiny for any sizeable droplet. It also gets smaller for larger droplets. until the droplet becomes massive enough to generate its own sizeable gravity.

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cowox93112 t1_is8ga4c wrote

Society mostly.

There is a series of 'cloister studies', i.e. following the life of nuns and monks. The interesting part here is that, not only do nuns and monks have a generally very healthy lifestyle (some labor, but not too hard, quality food, no dangerous activities etc.), but also males and females pretty much live the same life. The result is that monks have a significantly higher life expectancy than men in general, but it is still 1-2 years shorter than nuns.

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