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Ben Franklin tied a key to a kite string during a thunderstorm, and proved that static electricity and lightning
were the same thing. -
Samuel Morey developed an engine that ran on ethanol and turpentine.
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The first practical coal-fired electric generating station, developed by Thomas Edison, went into operation in
New York City to supply electricity for household lights. -
Albert Einstein wrote the special theory of relativity. He created a new era of physics when he unified mass, energy, magnetism, electricity, and light. One of the most significant events of the
20th century was Einstein’s developing the formula of E=mc2 (that is, energy equals mass times the square of the
speed of light). -
J. Spangler invented the first electric vacuum cleaner.
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Almost all American farms had electricity
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With the growing use of automobiles, oil became our most used energy source .
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Most coal was used for generating electricity.
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The Clean Coal Technology Act passed.
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The United States sponsored a $1 billion, 10-year demonstration project to create the world’s first coal-based,
zero-emissions electricity and hydrogen power plant.
