Captain Henry Joseph Round was an English engineer and one of the early pioneers of radio, who lived from 1881 to 1966. He was the first to report the observation of electroluminescence from a solid-state diode, which led to the discovery of the light-emitting diode. He was a personal assistant to Guglielmo Marconi. He was the eldest child of Joseph and Gertrude Round, spent his early years in the small town of Kingswinford in Staffordshire, and was educated at Cheltenham Grammar School before attending the Royal College of Science at Imperial College.
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Henry Joseph Round
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Captain Henry Joseph Round (2 June 1881-17 August 1966) was an English engineer and one of the early pioneers of radio.
Light-Emitting Diode (Wikipedia)
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Electroluminescence from a solid state diode was discovered in 1906 by Henry Joseph Round of Marconi Labs, and was published in February 1907 in Electrical World.
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