The New Student's Reference Work/Dyne

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The New Student's Reference Work (1914)
See also Dyne on Wikipedia, and the disclaimer.

Dyne (dīn), the unit of force employed in the metric system.  It is defined as that force which, acting upon a mass of one gram, will produce unit-acceleration.  If we denote the acceleration of gravity by g, then the weight of one gram is equal to g dynes.  And, in general, we may say that the weight, W, of any body whose mass is m grams is mg dynes, or

w=mg dynes.

A definition of the dyne which is exactly equivalent to that given above is the following:  That force which, acting for one second, will produce unit-change of velocity in a mass of one gram.  A megadyne is a force of one million dynes, and is about two per cent. greater than the weight of a kilogram.