Can you add objects in an already-full glass and not let the water spill?
REQUIREMENTS :-
Water
A glass
Water
Pins (different shapes & sizes)
WHAT TO DO :-
Fill up the glass of water right upto its brim. And then start dropping the pins into the water one by one.
WHAT HAPPENS :-
You will see that the water does not spill out of the glass even though it is filled right up to its brim.
WHY THIS HAPPENS :-
The surface tension of the water doesn't allow the water to spill out and is the key reason for holding the water in the glass although it is already full.
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