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Numerous number of scientists worked on electric lamp for long time. Humphry Davy created an arc Lamp that was stronger than 1000 candles using volts from a battery. It was to replace old ineffective candles.
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James Bowman Lindsay first contained an electrical charge inside of a glass bulb.
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Heinrich Geissler 1st created a special tube to use with electricity which could contain an electric charge inside of the glass tube more sufficiently.
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Thomas Edison patented his lamp in 1879. Later he patented a 16-watt light bulb in 1880.
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Shuji Nakamura created long lasting, cost effective and small new type of light. Now, in modern life, everyone use LED.
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Energy department innovated LED to be more adaptive and less energy consuming. This innovation changed many factors around the globe.
