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  On this date he proved that static electricity andf lightning were the same thing
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  Invented the first electric battery, the term volt is named in his honor
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  Discovered the principle of electro-magnetic rotation that would later be the key to developing the electric motor
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  He defined the relationship between power, voltage, current and resistance in Ohms Law
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  Invented the electrical relay, which could send electrical currents long distances
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  A breakthrough in nuclear energy
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  Discovered the electron. In 1906, he received the Nobel Prize in Physics for this discovery
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  He discovered two kinds of rays emitting from radium. He called the first rays, alpha rays; and the more penetrating rays, beta rays
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  He discovered that a combination of copper and cuprous oxide was sensitive to light
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  President Roosevelt received a letter from Albert Einstein on the possibility of a uranium weapon