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A batteryless radio can work with a power cord, or it can work by a solar cell, it mostly though operates by a handcrank. In MIT they are trying to figure out how to power a radio with FM radio signals. Works everywhere with radio signals which is everywhere!
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoTed Rogers Sr.
The first batteryless radios were called crystal radios. In 1874 the German inventor Karl Ferdinand Braun discovered the properties of crystals that made the crystal radio possible. The first crystal radios were developed around 1904 by several inventors, the most prominent being JC Bose of India and GW Pickard of the US.
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Canadian Inventions in the 1920s?
1920 - Group of Seven 1921 - Bluenose Racing Shooner 1922 - Documentary Film 1922 - Insulin 1922 - Ski-Doo Snowmobile 1923 - Synchronized Swimming 1923 - RADAR 1925 - Batteryless radio 1927 - Electric Organ 1929 - Frozen Food
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