Historical review • Early history of communication • 1799 Alessandro Volta invented electric battery, •1837 Samuel Morse demonstrated telegraph and 1844 first telegraph line (Washington-Baltimore) became operational •Early history of wireless communication •1831 Faraday demonstrates electromagnetic induction •J. Maxwell (1831-79): theory of electromagnetic Fields, wave equations (1864) •H. Hertz (1857-94): demonstrates with an experiment the wave character of electrical transmission through space(1888, in Karlsruhe,Germany, at the location of today’s University of Karlsruhe) — Historical review Early history of wireless communication I 1895 Guglielmo Marcon first demonstration of wireless telegraphy (digital!) long wave transmission, high transmission power necessary (> 200kw)
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