Arc Lamp
Long before the incandescent electric light bulb was invented, arc lamps had given birth to the science of electric lighting. In the early 1800s, when the first large batteries were being bui...
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Arc Searchlight
Searchlights depend on special lenses and reflectors to focus electric light into a pinpoint beam that can illuminate objects thousands of feet away. Since about 1870, carbon arc lamps...
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Arc Lamp