Happy Birthday Hans Christian Ørsted (Oersted)
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Hans Christian Ørsted, one of the leading scientists of the nineteenth century, played a crucial role in understanding electromagnetism. In 1820 he discovered that a compass needle deflects from magnetic north when an electric current is switched on or off in a nearby wire. This showed that electricity and magnetism were related phenomena, a finding that laid the foundation for the theory of electromagnetism and for the research that later created such technologies as radio, television and fiber optics. The unit of magnetic field strength was named the Oersted in his honour.
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James Clerk Maxwell
Would Ørsted's work have influenced James Clerk Maxwell? To research here are a few links that records Maxwell's published works and other historical events:
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Relevance: these matters all relate to the fundamental building blocks of radio signals, not forgetting, of course, that although we operate today in a digital radio society the waveform of radio signals are still analogue by nature. It is the adopted modulation schemes that define the important information we know that hides and is transported inside the radio signals - data.
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