Surface Tension of Water on a Penny

You can fit many more drops of water on top of a penny than you think due to surface tension of water. Adding Soap lowers the surface tension. - For more information including instructions, discussion of concepts, and other demonstrations visit the NKU demonstration database at ChemDemos.nku.edu

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Entertainment

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• dropspenny

[darkrock2008]

waitt, why do you have safety goggles on?? r u afraid water is gonna fall in yuor eyes XD

[sieveb1]

@darkrock2008 as you noted water is not particularly dangerous but we shoot several videos in a row and they just happened to be on I guess

[B633750]

Focus your camera on the penny.

[MeiTeller]

@MeiTeller

Dear myself,

I also agree with sieveb1

[MeiTeller]

@darkrock2008

i agree ; i think you're right

[JeffreyXD54]

@sieveb1 , im doing a experiment for my science fair at school. Im using rice grains and putting them on top of a 1cm x 1cm piece of aluminum foil.

[darkrock2008]

@sieveb1 oh ........................... :P

[Cheejyg]

learn to on the macro mode of the vid cam.... u should have it