Harold Marion Crothers was an American professor of electrical engineering at South Dakota State University

South Dakota State University

South Dakota State University is the largest university in the U.S. state of South Dakota, located in Brookings. A public land-grant university and sun grant college, founded under the provisions of the 1862 Morrill Act, SDSU offers programs of study required by, or harmonious to, this Act...

 where he also served as president for three periods (1946, 1951, 1957–58).
He was dean of Engineering 1925-55 and gave name to the Crothers Engineering Hall (1957). Earlier, he was instrumental in the establishment of the university's first radio station

Radio station

Radio broadcasting is a one-way wireless transmission over radio waves intended to reach a wide audience. Stations can be linked in radio networks to broadcast a common radio format, either in broadcast syndication or simulcast or both...

 (1931).

Crothers received a B.S. in mathematics (1910) and did a study on Potential Distribution on High Tension Insulators with advisor Jesse L. Brenneman (1913).
This led to a Ph.D.

Ph.D.

A Ph.D. is a Doctor of Philosophy, an academic degree.Ph.D. may also refer to:* Ph.D. , a 1980s British group*Piled Higher and Deeper, a web comic strip*PhD: Phantasy Degree, a Korean comic series* PhD Docbook renderer, an XML renderer...

 at University of Wisconsin, Madison on a thesis entitled The Selective Properties of Coupled Radio Circuits advised by with Edward Bennett (physicist)

Edward Bennett (physicist)

Edward Bennett was an American physicist, known from his early involvements in wireless transmission.He obtained a Ph.D. in electrical engineering at the Western University of Pennsylvania . The work was on spark-gap transmitters, jointly with William Bradshaw andsupervised by Reginald Fessenden...

(1920). He joined the faculty there and wrote a book on Introductory Electrodynamics, jointly with Bennett (1926).