It is simple physics.
I love to do it with my daughter - school staff is so boring.
So - how to do it?
Simple - put a paper on top of the glass, flip, place on table, gently remove paper.
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From @marczello
It is simple physics.
I love to do it with my daughter - school staff is so boring.
So - how to do it?
Simple - put a paper on top of the glass, flip, place on table, gently remove paper.