| LED bulbs can last for up to 100,000 hours of use, which is almost 11 years! The first rechargeable flashlight was introduced in 1967. The word lamp is derived from the Greek word lampas, meaning torch. LEDs (light emitting diodes) are used in virtually all electronic equipment, appliances, toys, signs, and many other products. There are two main types of light creation: incandescent lights, which use a filament, and Arc lights, which use an electrical current running through a gas. |
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