GK
INVENTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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incandescent lamps
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the sun
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the air conditionner
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the oven
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Detailed explanation-1: -These lights lasted longer and were about three times more efficient than incandescent bulbs. The need for energy-efficient lighting American war plants led to the rapid adoption of fluorescents, and by 1951, more light in the U.S. was being produced by linear fluorescent lamps .
Detailed explanation-2: -According to the Thomas Edison National Historical Park, “In 1879, he made an incandescent bulb that burned long enough to be practical, long enough to light a home for many hours.
Detailed explanation-3: -The carbon arc lamp was invented in the early 1800s by Humphry Davy, a British chemist and inventor. The device worked by sending electrical current through two carbon electrodes separated by an air gap. The heat vaporized the carbon at the tips of the electrodes, producing a bright light.