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Alan Blumlein, English engineer, developed the H2S radar (died 1942)

Historical image related to Alan Blumlein, English engineer, developed the H2S radar (died 1942) from June 29, 1903

Alan Blumlein

English electronics engineer (1903–1942)

Alan Dower Blumlein was an English electronics engineer, notable for his many inventions in telecommunications, sound recording, stereophonic sound, television and radar. He received 128 patents and was considered one of the most significant engineers and inventors of his time.
Source: Wikipedia (CC BY-SA)

H2S (radar)

First airborne, ground scanning radar system WWII

H2S was the first airborne, ground scanning radar system. It was developed for the Royal Air Force's Bomber Command during World War II to identify targets on the ground for night and all-weather bombing. This allowed attacks outside the range of the various radio navigation…
Source: Wikipedia (CC BY-SA)