| 释义 |
dyne Physics.|daɪn|
[a. F. dyne, taken from Gr. δύναµις force, δύνασθαι to be powerful.]
The unit of force in the centimetre-gramme-second (C.G.S.) system, i.e. a unit equivalent to that force which, acting for one second on a mass of one gramme, gives it a velocity of one centimetre per second.
In France the term had been proposed at an earlier date in a different sense: see quot. 1842.
[1842Mech. Mag. XXXVI. 192 The Industrial Society of Mulhausen..observe, that the usual estimation of horse⁓power is not uniform, and propose that the unit for France should be the force required to raise one kilogramme to the height of a metre in a second. To this unit they propose that the name of dyne..should be applied.] 1873Brit. Assoc. Rep. 223 As regards the name to be given the C.G.S. unit of force, we recommend that it be a derivative of the Greek δύναµις. The form dynamy appears to be most satisfactory to etymologists. Dynam is equally intelligible, but awkward in sound to English ears. The shorter form, dyne..will probably be generally preferred in this country. Ibid. 224 The weight of a gramme, at any part of the earth's surface, is about 980 dynes, or rather less than a kilodyne. 1874Maxwell Poem in Life (1882) 633 This string, you said, is strained too far, 'Tis forty dynes at least too tight. 1889A. W. Poyser Magnet. & Electr. 97 By a charge of one unit is meant that charge on a very small body, which, if placed at a distance of one centimetre from an equal and similar charge, repels it with a force of one dyne. |