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## Word of the Day – Tuesday, January 17th

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DYNE (dine)

The force required to accelerate a mass of one gram at a rate of one centimeter per second squared
Common clues: Unit of force; A bit of force; Physics unit; Newton fraction; Centimeter-gram-second
Crossword puzzle frequency: 2 times a year
Video:
MIT Professor Walter Lewins' Physics Class

In physics, the dyne is a unit of force specified in the centimetre-gram-second (CGS) system of units, a predecessor of the modern SI. One dyne is equal to exactly 10 micronewtons. Equivalently, the dyne is defined as "the force required to accelerate a mass of one gram at a rate of one centimetre per second squared": 1 dyn = 1 g·cm/s² = 10−5 kg·m/s² = 10 µN

The dyne per centimetre is the unit usually associated with measuring surface tension. For example, the surface tension of distilled water is 72 dyn/cm at 25°C (77°F).

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Dyne". 