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

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Glass sticks to glass primarily due to friction between the surfaces, which can be enhanced by the smoothness of the polished glass. The phenomenon observed during the school demo, where two pieces of glass briefly adhered, is not significantly influenced by air pressure. The discussion also draws parallels to how suction works, as seen with a sucker-tipped arrow, suggesting that atmospheric pressure plays a minimal role in this specific scenario. The inquiry into the forces at play emphasizes the importance of understanding surface interactions. Overall, the sticking of glass is largely attributed to the physical properties of the materials rather than external atmospheric conditions.
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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
 
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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?
 

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