electrostatic unit

noun

Electricity.

1. a unit, as a statampere, in the system of electric units derived from the force of repulsion between two static charges. esu, ESU

electrostatic unit

noun

1. Abbreviation: ESU.  e.s.u.. any unit that belongs to a system of electrical cgs units in which the electric constant is given the value of unity and is taken as a pure number Compare electromagnetic unit

Word History and Origins

Origin of electrostatic unit¹

First recorded in 1855–60

Example Sentences

If by adding a weight of one milligramme equilibrium is restored, each of the spheres contains in round numbers the electrostatic unit of electrical quantity.

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From this Thomson deduced a value for the ratio of the electromagnetic unit of electricity to the electrostatic unit, and indicated methods of determining this ratio experimentally.

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This is equivalent to an electric force of about 500 electrostatic units.

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In the next place we must notice that electrification is a measurable magnitude and in electrostatics is estimated in terms of a unit called the electrostatic unit of electric quantity.

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On Maxwell’s electromagnetic theory the velocity of propagation of electromagnetic disturbances should equal the velocity of light, and also the ratio of the electromagnetic unit of electricity to the electrostatic unit.

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