any science geeks in here....?...question..
Push to shock!
Joined: Sep 2002
Posts: 4,583
Likes: 0
From: Palo Alto, CA
Originally Posted by WiLL
ok one last thing....
when the water is in the vacuum, there is little or no air pressure holding the water down, so the vapor pressure easily overcomes the atmosphere pressure and boils out. and the vapour pressure exists from the heat around the room? :thinking:
when the water is in the vacuum, there is little or no air pressure holding the water down, so the vapor pressure easily overcomes the atmosphere pressure and boils out. and the vapour pressure exists from the heat around the room? :thinking:
Thread Starter
Joined: Jun 2001
Posts: 58,579
Likes: 0
From: Lll
Originally Posted by Kestrel
Vapor pressure is a function of the molecular speed distribution. In any substance, there are molecules that move or vibrate quickly, and those that vibrate slowly. The quickly vibrating ones can break free of the liquid and become more "gas like", which is where vapor pressure comes from.
and heat is what causes them to move "faster" right.
__________________
.
.