# Why does a piece of glass stick to another piece of glass?

by AirHendrix
Tags: glass, piece, stick
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 P: 8 1. The problem statement, all variables and given/known data What does a piece of glass stick to another piece of glass? We conducted a demo in school where we stuck to pieces of identical see-through glass on top of each other and they stuck together for a second or two. 2. Relevant equations None whatsoever other than it was about "Over Polished" Substances 3. The attempt at a solution It sticks due to their friction
 HW Helper P: 5,341 Air pressure would have nothing to do with it?
 P: 8 ^ I'm sorry.... Its just that its been two weeks since that lecture and he told us just to watch it... It was a lab demo of Over Polished substances...
 P: 8 Why does a piece of glass stick to another piece of glass? Sorry to ask but is it air pressure?
 P: 282 Why does a sucker-tipped arrow stick to a target?
 Sci Advisor P: 1,498 Draw a free-body diagram and indicate where atmospheric pressure exerts forces. How much "atmosphere" exists between two pieces of identical highly-polished pieces of glass?

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