
[After William GILBERT.]
Symbol Gb. The c.g.s. unit of magnetomotive force equal to 10/4π (= 0.795 77) ampere-turn. It is named after the English physician and physicist William Gilbert (1544–1603), who studied magnetism.
[Etymology: W. Gilbert; England 1540-1603] magnetomotive force Metric- c.g.s.-e.m.u. 1930 the analog of volt of electromotive force, = 1/4π abampere·turn, = 10/4π A·turn = 0.795 774 7~ A·turn.
The corresponding practical unit was the pragilbert, = 10-1 gilbert. The mean international gilbert = 0.999 85~ gilbert = 0.794 58~ A·turn.
Originally termed the gauss, it became the gilbert soon after 1900, but officially so only by agreement by the International Electrotechnical Committee in 1930.
[Nature Vol. 126, 252 (1930)] There is no equivalent unit in the SI.
To convert from gilberts to:
ampere-turns,
multiply by .7958.
amp-turns/cm,
multiply by .7958.
amp-turns/in,
multiply by 2.021.
amp-turns/meter,
multiply by 79.581.
Related measurements:
