Capillary action

Capillary action

C022/1734

Rights Managed

Caption

Blue colored water moves up a capillary tube demonstrating capillary action caused by adhesion between the polar water molecules and the glass which is also polar. The demonstration also reveals the effects of cohesion - the attraction between water molecules that causes them to stick together. The blue is from food colouring added to enhance the visual of the water in the tube.

Release details

Model release not required. Property release not required.

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