- Stock Photography: LASER LIGHT.LIGHT PAINTING by Zigana1974
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- Photo title: Laser light.Light painting
- Author: Zigana1974
- Cover photo description:
- “Laser†is an acronym for light amplification by stimulated emission of radiation. A laser is created when the electrons in atoms in special glasses, crystals, or gases absorb energy from an electrical current or another laser and become “excited.†The excited electrons move from a lower-energy orbit to a higher-energy orbit around the atom’s nucleus. When they return to their normal or “ground†state, the electrons emit photons particles of light. These photons are all at the same wavelength and are “coherent,†meaning the crests and troughs of the light waves are all in lockstep. In contrast, ordinary visible light comprises multiple wavelengths and is not coherent.
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