Statmho

The statmho is the unit of electrical conductance in the electrostatic system of units (ESU), an extension of the centimeter-gram-second (CGS) system to cover electrical units.

Conversion[]

In the ESU system, the permittivity of free space is set to unity by definition. This results in unit conversions to the SI system containing a power of the speed of light, c, as well as a power of 10. In the case of the statmho, the conversion from siemens (S) is given by:^[1]

1 S ≡ 10⁻⁵c² statmho.

The value of c in the SI system is 299,792,458 metres per second exactly by definition. However, in the era in which the ESU system was in use, the speed of light was determined by measurement and was taken to be approximately 29,973,000,000 centimetres per second.^[1]

1 statmho = 1.112650 pS.^[2]

References[]

^ ^a ^b Donald Fenna, A Dictionary of Weights, Measures, and Units, pp. 83-84, Oxford University Press, 2002 ISBN 0198605226.
^ Fenna, p.76

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[Fenna83-1] Donald Fenna, A Dictionary of Weights, Measures, and Units, pp. 83-84, Oxford University Press, 2002 ISBN 0198605226.

[2] Fenna, p.76

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[2]

v t CGS units
Base units	centimetre gram second
Derived non EM units	barye dyne erg gal kelvin poise kayser phot stilb
Derived EMU units	abampere abcoulomb abhenry abmho abohm abvolt biot gauss gilbert maxwell oersted
Derived ESU units	statcoulomb statmho statohm statvolt