# Gilbert (unit)

Physical unit
Unit name Gilbert
Unit symbol ${\ displaystyle \ mathrm {Gb}}$ Physical quantity (s) magnetic flooding
dimension ${\ displaystyle {\ mathsf {M ^ {1/2} L ^ {1/2} T ^ {- 1}}}}$ system Electromagnetic CGS unit system , Gaussian CGS unit system
In SI units ${\ displaystyle \ mathrm {1 \, Gb \ sim {\ frac {10} {4 \, \ pi}} \; A}}$ In CGS units ${\ displaystyle \ mathrm {1 \, Gb = 1 \, {\ frac {\ sqrt {g \ cdot cm}} {s}}}}$ Named after William Gilbert
Derived from amp

The Gilbert ( unit symbol  Gb , after the English doctor and physicist William Gilbert ) is an outdated unit of the magnetic voltage  U m (= magnetic field strength × path ) in a cgs system for electromagnetic units . ${\ displaystyle H}$ ${\ displaystyle s}$ The Gilbert is defined by the work that increases the magnetic potential of a positive unit pole by 1  erg :

${\ displaystyle \ mathrm {1 \ Gb = 1 \ Oe \ cdot cm = 1 \ {\ frac {\ sqrt {g \ cdot cm}} {s}}}}$ with the CGS unit Oe ( Oersted ) for the magnetic field strength.

Conversion in SI units :

${\ displaystyle \ mathrm {1 \ Gb \ {\ mathrel {\ hat {=}}} \ {\ frac {10} {4 \ \ pi}} \ A \ approx 0 {,} 795 \ 774 \ 7 \ A }}$ with the SI unit A ( ampere ) for the magnetic voltage or the electrical current strength .

Further conversion:

${\ displaystyle \ mathrm {1 \ Gb = {\ frac {1} {4 \ \ pi}} \ Bi}}$ with for the cgs unit Biot . ${\ displaystyle \ mathrm {Bi}}$ 