Scientific inventions discovered the origin: from radio communications to electrical applications(Chinese Edition)

Language:Chinese.Paperback. Pub Date: 2016-01-01 Publisher: Beijing Publishing House book introduces the brief history of radio communication. Transmission of information is an important part of human social life. from the ancient flames. Morse code. telephone. long-distance communication. radio broadcasting. the emergence of large scale integrated circuit technology to microelectronics era. People have been looking for a means of rapid long distance communication! Contents: a Hertz electromagnetic wave. electromagnetic wave hypothesis proved Maxwell 2 II. reflection. refraction and polarization experiments 5 three reasons for generating an electromagnetic wave 7 Fourth. wavelength. frequency and period 9 Marconi. Popov and a radio communication from the Buran Li tube to coherer 12 Second. the Marconi radio communications 13 III Popov radio 19 Fourth. the tuning application ...