What is light? Name some sources of light that are not hot?
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led syska light hygjghhyhvgfhgfg
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light is a help of see to anything to human being .
2nd define
Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.
light are two type
1.luminous
2.non luminous.
2nd define
Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.
light are two type
1.luminous
2.non luminous.
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