William Henry Eccles birthday 23 August 1875 British physicist and a pioneer in the development of radio communication.

He was born in Barrow-in-Furness, Lancashire, England. Following graduation from the Royal College of Science, London, in 1898, he became an assistant to Guglielmo Marconi, the Italian radio entrepreneur. In 1901 he received his doctorate from the Royal College of Science. Eccles was an advocate of Oliver Heaviside's theory that a conducting layer of the upper atmosphere could reflect radio waves around the curvature of the Earth, thus enabling their transmission over long distances. Originally known as the Kennelly–Heaviside layer, this region of the Earth's atmosphere became known as the Ionosphere. In 1912 Eccles suggested that solar radiation was responsible for the observed differences in radio wave propagation during the day and night.[2] He carried out experiments into atmospheric disturbances of radio waves and used wave detectors and amplifiers in his work. Eccles invented the term Diode to describe an evacuated glass tube containing two electrodes; an anode and a cathode. He died 29 April 1966.

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