Examples of artificial sources of light
Physics
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Artificial sources of light are those created or enhanced by humans.
Examples include:
- Incandescent light bulbs: These produce light by heating a filament until it glows.
- Fluorescent lights: These use electricity to excite mercury vapor, producing UV light that then causes a phosphor coating to glow.
- LEDs (Light Emitting Diodes): These are semiconductor devices that emit light when an electric current passes through them.
- Lasers: These produce a highly concentrated beam of light through a process called stimulated emission.
- Candles and oil lamps: These produce light through combustion.
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