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Why do small bubbles have excess of pressure?

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Because excess pressure of a bubble is inversely proportional to radius of bubble
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P P So in small sphere pressure is less.
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P 

So in small sphere pressure is less.

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Due to surface tension, water droplets or let's say any liquid try to form the bubble(Spherical) shape. The difference in pressure between the inside of outside of the bubble depends directly upon Surface tension and inversely on the radius of the bubble. Hence small bubbles exhibit more pressure differential. P1-P2...
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Due to surface tension, water droplets or let's say any liquid try to form the bubble(Spherical) shape. The difference in pressure between the inside of outside of the bubble depends directly upon Surface tension and inversely on the radius of the bubble. Hence small bubbles exhibit more pressure differential.

P1-P2 = 4T/r

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