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from 200 bce to 220 bce the chinese military comanders used compasses
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Thales discovered in 600 bce in greece that when amber rubbed with animal fur attracted light objects.
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in the 1200's lodestones were being to be used on ships to navigate the waters
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Otto built the first electric generating machine in the 1660
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in 1700 many english men published there woks on experments they did. they removed air from glass globe, and made the globe roate while rubbing with a wool cloth.
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they invented a storage jar. which they proved that electricity can be stored.
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ben franklin conducted the experment when he took his keys and tied them to a kite and flew the kite in a thunder storm and the electricty in the air charged the string and sent it into the leyden jar
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he was the first person to measure the amount of electricity and magnetism gentated in a circuit.
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dead frogs muscles twitched when it was placed near an electrical machine
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he was born in como, italy. was a professor. he disagreed with galvanis hypothesie. his discovers led to invention of batterys.
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was a french mathematician and scientist. he did important experments on electric currents. he made it so we can measure current.
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he did experments on elecricity and magnetism. his inventions led to the inventions of the motor, genrator, transformer, telegraph, and telephone.
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he invented the incandescent light bulbs. it took him years to find the right filiments.
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was one of thomas edisons employees, he was also an inventer from croatia. he invented AC electric.
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Huang-ti was supposed to be the first person to use a lodestone for a compass.
