What is light ? What are the types of light sources ?
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Light, electromagnetic radiation that can be detected by the human eye. ... Electromagnetic radiation occurs over an extremely wide range of wavelengths, from gamma rays with wavelengths less than about 1 × 10−11 metre to radio waves measured in metres.
Light sources include the sun, light bulbs and stars. Reflectors (such as the moon, cat's eyes, and mirrors) do not actually produce the light that comes from them
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A light source is anything that makes light, whether natural and artificial. Natural light sources include the Sun and stars. Artificial light sources include lamp posts and televisions.
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