magnetic constant

noun

1. the permeability of free space, which has the value 4π × 10 ^–7henry per metre M0 Also calledabsolute permeability

Example Sentences

Throughout, the character was a magnetic constant; the show’s problem was always finding villains worthy of him.

From New York Times

Magnetic constant, Hansen’s observations, I, 243.

From Project Gutenberg

Hansen had also at stated periods to take observations to determine the magnetic constant in this unknown region.

From Project Gutenberg