Surface Tension

Matchstick on water

Matchstick on water

Carefully place pin on surface of water.  We made  a 'cradle' using a bit of styrofoam and two pins.

Carefully place pin on surface of water. We made a ‘cradle’ using a bit of styrofoam and two pins.

Matchstick vs Pin

Matchstick vs Pin
You can see how the matchstick just floats, while the pin actually pushes down on the water.

 

 

Adding pepper highlights the difference between the two.

Adding pepper highlights the difference between the two.

 

 

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Posted on Friday, March 1st, 2013, in Science and tagged . Bookmark the permalink. Leave a comment.

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