Monday, September 19, 2011

Raindrops Size

Is there a maximum size that raindrops can be? Yes, any raindrops larger than 7mm in diameter will split into pieces as it falls. Raindrops are made up of a minute water particles that bonds together in clouds. The larger the raindrops become, the less effective their surface tension is at holding them together. This makes them increasingly unstable, and as the pick up speed on their way to earth, turbulence and other aerodynamic forces will rip them apart. This will normally happen to a 7 mm wide droplet when it hits a speed of around 30km/h.

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