Discovery and exploitation Radio wave

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rough plot of earth s atmospheric transmittance (or opacity) various wavelengths of electromagnetic radiation, including radio waves.


radio waves first predicted mathematical work done in 1867 scottish mathematical physicist james clerk maxwell. maxwell noticed wavelike properties of light , similarities in electrical , magnetic observations. mathematical theory, called maxwell s equations, described light waves , radio waves waves of electromagnetism travel in space, radiated charged particle undergoes acceleration. in 1887, heinrich hertz demonstrated reality of maxwell s electromagnetic waves experimentally generating radio waves in laboratory, showing exhibited same wave properties light: standing waves, refraction, diffraction, , polarization. radio waves, called hertzian waves , first used communication in mid 1890s guglielmo marconi, developed first practical radio transmitters , receivers.








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