历史上最伟大发明的真相
ne later learns, Thomas Edison in no way invented the light-bulb. Electric lighting existed before him, incandescent4) light bulbs existed before him, and when other inventors got wind of5) Edison’s tinkerings6), they roundly7) sued him for patent infringement. So what did Edison actually do? He discovered that a special species of bamboo had a higher resistance to electricity than carbonized pa
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