electric constant

British

noun

Also called: absolute permittivity, εo. the permittivity of free space, which has the value 8.854 187 × 10 ^–12 farad per metre

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electric constant

For ebonite this electric constant varies from 2.2 to 3.5 for different specimens, the mean of which is almost exactly equal to the square of 1.7.

From Scientific American Supplement, No. 288, July 9, 1881 by Various

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