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What's in A "G"

Let's take a little walk in radio history, shall we? 

How long ago did we start taking advantage of radio waves? According to the always-useful Wikipedia: "Radio waves were first predicted by mathematical work done in 1867 by Scottish mathematical physicist James Clerk Maxwell. His... Maxwell's equations predicted that a coupled electric and magnetic field could travel through space as an 'electromagnetic wave.' Maxwell proposed that light consisted of electromagnetic waves of very short wavelength. In 1887, German physicist Heinrich Hertz demonstrated the reality of Maxwell's electromagnetic waves by experimentally generating radio waves in his laboratory, showing they exhibited the same wave properties as light: standing waves, refraction, diffraction, and polarization. Italian inventor Guglielmo Marconi developed the first practical radio transmitters and receivers around 1894-1895. Radio communication began to be used commercially by around 1900. The modern…

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