Do You Know

Do you know that glass is in liquid form?

Yes, I mean the glass everybody have in their windows, wind shields, mirrors etc etc..

They all are liquid!!!!

The glass will get wider at the bottom after some years,

and get slimmer at the top,

as it's molecules move from the top to the bottom.

Light can get pass of glass is because it's in liquid form and it's molecules are unstable.