# Buckingham (unit)

Physical unit
Unit name Buckingham (unit)
Unit symbol ${\ displaystyle \ mathrm {B}}$
Physical quantity (s) electric quadrupole moment
dimension ${\ displaystyle {\ mathsf {M ^ {1/2} L ^ {7/2} T ^ {- 1}}}}$
system Electrostatic CGS unit system , Gaussian CGS unit system
Named after David Buckingham

The Buckingham ( unit symbol : B ), named after the Australian chemist David Buckingham , is a 1963 by Peter Debye introduced CGS - unit of the electric quadrupole moment . A Buckingham corresponds to the quadrupole moment of two opposite dipole moments of 1 Debye each  , which are 1  Angstrom apart:

{\ displaystyle {\ begin {aligned} \ mathrm {1B} & = \ mathrm {1D \ cdot \ mathrm {\ AA}} && \ approx (\ mathrm {3 {,} 33564 \ cdot 10 ^ {- 30} \ C \ cdot m}) \ cdot (\ mathrm {10 ^ {- 10} m)} \\ & = (\ mathrm {10 ^ {- 18} \ Fr \ cdot cm}) \ cdot (\ mathrm {10 ^ {-8} cm}) \\ & = \ mathrm {10 ^ {- 26} \ Fr \ cdot cm ^ {2}} \\ & \ approx \ mathrm {10 ^ {- 26}} \ cdot (\ mathrm {3 {,} 33564 \ cdot 10 ^ {- 10} \ C}) \ cdot (\ mathrm {10 ^ {- 4} \ m ^ {2}}) && \ approx \ mathrm {3 {,} 33564 \ cdot 10 ^ {- 40} \ C \ cdot m ^ {2}} \ end {aligned}}}

With