Biot-Savart law

[ bee-oh-suh-vahr, byoh- ]

noun

, Physics.

1. the law that the magnetic induction near a long, straight conductor, as wire, varies inversely as the distance from the conductor and directly as the intensity of the current in the conductor.

Word History and Origins

Origin of Biot-Savart law¹

Named after J. B. Biot ( biotite ) and Felix Savart (1791–1841), French physician and physicist

Example Sentences

And because the field strength declines non-linearly with distance, coupled with the Biot-Savart Law, you'd probably need a coil at least the size of a respectable building to get any decent range from one.

From The Guardian