Why do polished glass surfaces stick together briefly?

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AirHendrix
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Homework Statement


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.


Homework Equations


None whatsoever other than it was about "Over Polished" Substances


The Attempt at a Solution


It sticks due to their friction
 

Discussion

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Air pressure would have nothing to do with it?
 
^ 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...
 
Sorry to ask but is it air pressure?
 
Why does a sucker-tipped arrow stick to a target?
 
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?