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nature of random

Riwaaz_Ras
Posts: 1,046
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7/8/2016 6:30:54 AM
Posted: 5 months ago
Do you think randomness can maintain a temperature or pressure. If yes, how?
(This is not a goodbye message. I may or may not come back after ten years.)
chui
Posts: 507
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7/8/2016 3:27:26 PM
Posted: 4 months ago
At 7/8/2016 6:30:54 AM, Riwaaz_Ras wrote:
Do you think randomness can maintain a temperature or pressure. If yes, how?

The following is not my opinion but represents the mainstream view of science established about 100 years ago:

Temperature is a measure of the average kinetic energy per particle. Particles constantly collide causing them to randomly gain or loss energy, but energy is conserved so the average particle energy remains constant in a closed system.

The pressure exerted by a gas or liquid is equal to the number of collisions per second per unit area times the momentum change per collision. While collision rates and momentum changes rapidly on short time scales, over human time scales random variation even out giving a steady pressure.
RuvDraba
Posts: 6,033
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7/8/2016 11:06:24 PM
Posted: 4 months ago
At 7/8/2016 6:30:54 AM, Riwaaz_Ras wrote:
Do you think randomness can maintain a temperature or pressure. If yes, how?

Brownian motion will tend to distribute temperature and pressure across a system. As to what sustains it, Riwaaz, I think you'd need other factors.