بواسطة في شباط 21, 2025
Most modern electric lighting is powered by centrally generated electric power, but lighting could also be powered by cellular or standby electric generators or battery techniques. Battery-powered mild is often reserved for when and the place stationary lights fail, typically within the form of flashlights or electric lanterns, as well as in automobiles. Earlier than electric lighting became frequent within the early twentieth century, individuals used candles, gas lights, oil lamps, and fires. ...
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