['hevisaid]
海维赛德(①姓氏 ②Oliver, 1850-1925, 英国物理学家、电气工程学家)

[ noun ]
English physicist and electrical engineer who helped develop telegraphic and telephonic communications; in 1902 (independent of A. E. Kennelly) he suggested the existence of an atmospheric layer that reflects radio waves back to earth (1850-1925)
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