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how do flashlights work?

April 26, 2017Flash flashlights lights nightlights

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how do flashlights work?

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A flashlight is powered by batteries—they create an electrical current that flows through metal contacts and brings electricity to the lamp (light bulb) in the flashlight. A thin wire in the light bulb contains the element “tungsten”, which glows when in contact with electricity, producing a visible light. This light reflects off the reflector resting around the light bulb. For more information, visit our Learning Center.

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Some flashlights get their power from batteries. Many manual flashlights store power made by the user in capacitors. Some batteries are rechargeable and others can only be used once.