Friday, March 16, 2007

What is the real shape of a rain drop?









A small rain drop with the size of 1-2 mm is normally in spherical shape because the surface tension is able to
maintain its shape like a ball.





When the size of a rain drop is bigger than 4.5mm, the air pressure will be pressing on the bottom of the rain drop, pushing its sperical shape into like a hamburger bun.












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