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Harald T. Friis
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Harald Trap Friis (February 22, 1893 - June 15, 1976), who published as H. T. Friis, was a noted Danish-American radio engineer whose work at Bell Laboratories included pioneering contributions to radio propagation, radio astronomy, and radar.〔 His two Friis formulas remain widely used.
==Background==
Friis was born in Næstved, Denmark.〔 In 1916 received his electrical engineering degree from the Technical University of Denmark. After a stint at the Royal Gun Factory, in 1919 he received a Columbia University fellowship to study radio engineering under John H. Morecroft. In 1920 Friis joined a Western Electric Company research group which in 1925 became part of Bell Laboratories. There he remained for his entire professional career.
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