>>1844332Brownian motion.
If you're to lazy to google (and because, as
>>1844337 said, explaining science gets me hard), it basically means that at temperatures above 0K, atoms do random motions. Or more precisely, these random motions ARE temperature, and the feeling of warmth is them randomly striking the skin and transfering their energy.
In small particles or drops, the sum of the force created by these movements can be stronger than gravity, keeping fine mists or dusts suspended in the air.
Or to put it in simpler termy, imagine a rubber ball with a vibrator inside. You know, like those toys your mom uses when you didn't satisfy her. As long as the vibe runs, the ball will keep rolling and jumping instead of staying on the floor.
