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en.wikipedia.org/wiki/Drop_(liquid)

A drop or droplet is a small column of liquid, bounded completely or almost completely by free .... Due to the different refractive index of water and air, refraction and reflection occur on the ... Raindrop sizes typically range from 0.5 mm to 4 mm, with size distributions quickly decreasing past diameters larger than 2-2.5 mm.

water.usgs.gov/edu/raindropsizes.html

Dec 2, 2016 ... Why raindrops are different sizes? USGS's Water Science School site.

www.livescience.com/7809-raindrops-fall-sizes.html

Jul 23, 2009 ... Study finds variation in raindrop sizes is result of drops bursting as fall to ground.

indianapublicmedia.org/amomentofscience/raindrops-sizes

Nov 19, 2009 ... Why are raindrops different sizes when they fall from the sky?

www.ask.com/youtube?q=Why+Are+Raindrops+Different+Sizes&v=tsWaqdL_Y2I
Aug 14, 2009 ... Ever wondered why raindrops are different sizes? Well, a French research institute set out to find out why. The footage overturns the accepted ...

news.bbc.co.uk/1/hi/sci/tech/8155883.stm

Jul 20, 2009 ... Slow motion footage of a single falling raindrop shows scientists exactly why the drops are so many different sizes.

svs.gsfc.nasa.gov/vis/a010000/a012100/a012182/script_35167_01.html

A storm is made up of water drops of different sizes but without knowing these measurements many weather models operate under an assumption. What they do ...

pmm.nasa.gov/education/articles/shape-of-a-raindrop

Raindrops start to form in a roughly spherical structure due to the surface tension ... Once the size of a raindrop gets too large, it will eventually break apart in the ...

www.shorstmeyer.com/wxfaqs/float/rdtable.html

SUMMARY TABLE - Typical Raindrop Sizes. Drop Size, Terminal Velocity. Rain Type, mm, in, m/sec, miles/hr. Light Stratiform Rain (.04'' per hour). Small Drop .5  ...