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Thomas Edison made the first lightbulb.
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Peter Cooper Hewitt created a blue-green light by passing an electrical current through mercury vapor.
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Fluorescent lights were created when they combined neon tubes, phosphers and an electrical current.
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LED lights were invented
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After the oil crisis, the need for more energy efficient lights was present so the CFL or Compact Fluorescent light was manufactured.
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The most modern form of light that is still currently evolving for more efficiency