Gilbert (unit)

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The gilbert (symbol: Gb) is an obsolete unit used in practical cgs and CGS-EMU systems to measure magnetomotive force.[1] The unit is named for English physicist William Gilbert.


  • 1 Gb = (1/4π) Bi-t

Conversion to the corresponding quantity in the SI, with the unit ampere-turn (A⋅t):

  • 1 Gb ≘ (10/4π) A-turn ≈ 0.7957747 A⋅t[1]
  • 1 A-turn ≘ 4π × 10−1 Gb[1]


  1. ^ a b c Cardarelli, F. (2003). Encyclopaedia of Scientific Units, Weights and Measures. Their SI Equivalences and Origins. London: Springer. pp. 24. ISBN 978-1-4471-1122-1.