Joseph Henry (December 17, 1797 - May 13, 1878) was an American scientist who served as the first Secretary of the Smithsonian Institution.

Joseph Henry

Joseph Henry (December 17, 1797 - May 13, 1878) was an American scientist who served as the first Secretary…

A passive electrical component that can store energy in a magnetic field created by the electric current passing through it. An inductor's ability to store magnetic energy is measured by its inductance, in units of henries.

Alternator Inductor

A passive electrical component that can store energy in a magnetic field created by the electric current…