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How Secure Is Your Wireless Network? Safeguarding Your Wi-Fi LAN by CCNA Lee Barken - CISSP MCP, CPA

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Electromagnetism

Hans Christian Oersted performed his groundbreaking work in the discovery of the relationship between electricity and magnetism in 1820. Oersted was a Danish chemist and physicist with a passion for philosophy. As a professor of science at Copenhagen University, he performed numerous experiments with electricity and magnetism. During one such experiment, he set out to prove that he could heat a wire with an electric current. To his surprise, he stumbled upon a completely unrelated phenomenon. As the current was intermittently flowing through the wire in his experiment, a compass (coincidentally placed nearby) spun inexplicably. For months, Oersted repeated the experiment and documented the relationship between the electric current ...

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