Tuners and radio receivers
BACKGROUND
The nineteenth century was a time of great technical interest and experiment in both Europe and the USA. The newly evolved disciplines of scientific analysis were being applied to the discoveries which surrounded the experimenters and which, in turn, led to further discoveries.
One such happening occurred in 1864, when James Clerk Maxwell, an Edinburgh mathematician, sought to express Michael Faraday’s earlier law of magnetic induction in proper mathematical form. It became apparent from Maxwell’s equations that an alternating electromagnetic field would give rise to the radiation of electromagnetic energy.
This possibility was put to the test in 1888 by Heinrich Hertz, a German physicist. He established ...
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