The name dyne was first proposed as a C.G.S. unit of force in 1873 by a Committee of the British Association for the Advancement of Science.
The dyne is defined as "the force required to accelerate a mass of one gram at a rate of one centimetre per second squared". An equivalent definition for one dyne is "that force which, acting for one second, will produce unit change of velocity in a mass of one gram"
|1 N||≡ 1 kg⋅m/s2||= 105 dyn||≈ 0.10197 kp||≈ 0.22481 lbf||≈ 7.2330 pdl|
|1 dyn||= 10−5 N||≡ 1 g⋅cm/s2||≈ 1.0197 × 10−6 kp||≈ 2.2481 × 10−6 lbf||≈ 7.2330 × 10−5 pdl|
|1 kp||= 9.80665 N||= 980665 dyn||≡ gn ⋅ (1 kg)||≈ 2.2046 lbf||≈ 70.932 pdl|
|1 lbf||≈ 4.448222 N||≈ 444822 dyn||≈ 0.45359 kp||≡ gn ⋅ (1 lb)||≈ 32.174 pdl|
|1 pdl||≈ 0.138255 N||≈ 13825 dyn||≈ 0.014098 kp||≈ 0.031081 lbf||≡ 1 lb⋅ft/s2|
|The value of gn as used in the official definition of the kilogram-force is used here for all gravitational units.|
The dyne per centimetre is a unit traditionally used to measure surface tension. For example, the surface tension of distilled water is 71.99 dyn/cm at 25 °C (77 °F). (In SI units this is ×10−3 N/m or 71.99.) 71.99 mN/m
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