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The Gilbert ( unit symbol  Gb , after the English doctor and physicist William Gilbert ) is an outdated unit of the magnetic voltage  U _m (= magnetic field strength × path ) in a cgs system for electromagnetic units .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 . ${\displaystyle \mathrm {Bi} }$