# Physics:Statohm

The **statohm** is the unit of electrical resistance in the electrostatic system of units which was part of the CGS system of units based upon the centimetre, gram and second.^{[1]}
The static units in that system were related to the equivalent electromagnetic units by a factor of the speed of light. Those units were known as absolute units and so the equivalent of the statohm was the abohm and their proportions were:

1 statohm = c^{2} abohms = 8.987551787x10^{20} abohms where c is the speed of light in centimetres per second.

These units are not common now. The SI unit of resistance is the ohm. The statohm is nearly a trillion times larger than the ohm and is the largest unit of resistance ever used in any measurement system.^{[2]} The statohm as a practical unit is as unusably large as the abohm is unusably small.

1 statohm = 8.987551787x10^{11} ohms^{[3]}^{[4]}

## References

- ↑ Cesare Emiliani (1992),
*Planet Earth*, Cambridge University Press, pp. 11–12, ISBN 9780521409490 - ↑ H. Arthur Klein,
*The Science of Measurement: A Historical Survey*, p. 448, Courier Corporation, 1974 ISBN:0486258394. - ↑ Cardarelli, François (2003),
*Encyclopaedia of Scientific Units, Weights and Measures*, London: Springer, p. 23, ISBN 978-1-4471-1122-1 - ↑ Ray E. Bolz (1973),
*CRC Handbook of Tables for Applied Engineering Science*, CRC Press, p. 839, ISBN 978-0849302527, https://archive.org/details/crchandbookoftab0000unse_y0b1/page/839

Original source: https://en.wikipedia.org/wiki/Statohm.
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