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A light-emitting diode (LED) is a type of semiconductor device that emits light when current flows through it. The light is produced because of a process called electroluminescence.
Here's how it works:
LEDs are used in many devices like indicators on electronics, screens, street lights, and even for decorative lighting. They're known for being energy-efficient, long-lasting, and durable.
Here's how it works:
- Semiconductor Material: LEDs are made from a material that allows electrical current to pass through it, but it also has properties that allow it to emit light when the electrons inside the material move.
- Electric Current: When you apply an electric current to the LED, the energy causes electrons in the semiconductor to move, and they "jump" from one energy level to another.
- Light Emission: As the electrons "fall" back down to their original energy level, they release energy in the form of light. The color of the light depends on the materials used to make the LED and their energy levels.
- Efficiency: LEDs are much more efficient than traditional light bulbs because they use less energy to produce the same amount of light and last longer.
LEDs are used in many devices like indicators on electronics, screens, street lights, and even for decorative lighting. They're known for being energy-efficient, long-lasting, and durable.