Magnetism: Crash Course Physics #32

Transcript

This episode is supported by Prudential. So it’s Friday, April 21, 1820. A physics professor in Denmark named Hans Christian Oersted is in the middle of a lecture, and he’s using a compass and an electric wire for a demonstration. He turns on the current that runs through the wire, and he notices that the needle in the compass starts to move. And w... Read More