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GRAHAM'S LAW OF DIFFUSION<br />
(3 of 3)<br />
Liquid Forced Out of Spout<br />
The hydrogen in the beaker diffuses throught the wall of the porous cup faster than air can diffuse out. This produces a pressure rise in the reservoir, forcing liquid out of the spout.

Fphoto-60640503H-6RM.jpg

GRAHAM'S LAW OF DIFFUSION
(3 of 3)
Liquid Forced Out of Spout
The hydrogen in the beaker diffuses throught the wall of the porous cup faster than air can diffuse out. This produces a pressure rise in the reservoir, forcing liquid out of the spout.

Copyright:© 2005 Richard Megna - Fundamental Photographs

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richard megna