Gilbert (unit) explained

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.

Definition:

• 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]

Notes and References

1. Book: Cardarelli, F.. Encyclopaedia of Scientific Units, Weights and Measures. Their SI Equivalences and Origins.. limited. Springer. 2003. 978-1-4471-1122-1. London. 24.