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by Science Source
$38.00
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Our Bella / Canvas t-shirts are made from a 50% cotton / 50% polyester blend and are available in five different sizes. They're stylish, soft, and incredibly comfortable. Machine wash with cold water, and tumble dry on low heat.
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Sir Oliver Joseph Lodge (1851-1940) was an English physicist and writer involved in the development of key patents in wireless telegraphy. In 1879... more
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Sir Oliver Joseph Lodge (1851-1940) was an English physicist and writer involved in the development of key patents in wireless telegraphy. In 1879 Lodge became interested in generating (and detecting) electromagnetic waves. In 1894, Lodge gave a lecture on the work of Hertz and transmitted radio signals to demonstrate their potential for communication. Lodge improved Branly's coherer radio wave detector by adding a "trembler" which increased the device's sensitivity. He carried out scientific investigations on lightning, the source of the electromotive force in the voltaic cell and electrolysis. He also made a major contribution to motoring when he patented a form of electric spark ignition for the internal combustion engine (the Lodge Igniter). In 1898, Lodge gained a patent on the moving-coil loudspeaker, utilizing a coil connected to a diaphragm, suspended in a strong magnetic field. His "syntonic" tuner allowed the frequency of transmitter and receiver to be "verified with ease and...
$38.00
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