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Tales of Miletos observerd the wire with wool generated electric charges.
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William Gilbert discovered existes conductive materials and anticonductive
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Otto Von Guericke discovered the direction of electricity and researched of the electrostatics electricity
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William Watson discovered that the current is a continuous discharge of current
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Alessandro Volta discovered the chemical batterie and rechargeable batteries
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Georg Simon Ohm discovered the relationship whit voltage, current and resistance
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Guillermo Marconi was important inventor for researchs abaut radio transmission
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Nikola Tesla invented AC generator-engine and light bulb within others relevants inventions.
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George Westinghouse was important to distribute and as better the inventions of Nikola Tesla
