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Raw sunlight composed of wide range of electro-magentic spectrum this include infrared spectrum (far left) to gammy ray spectrum (far right). Earth's atmosphere and magnetic shield filter most of the harmful far right spectrum and only allows upto Ultra Violet range. This resulting in natural light. So I guess you can say natural light is what ever sunlight that gets passed through the atmosphere and the magnetic shield. However, we gets to see only a small portion of the spectrum of natural light called visible spectrum. There are lot of different behavior within the electro-magnetic spectrum. Some waves bounch off the atmosphere and ground and it is used for radar. Some waves curve around objects and we call it radio.

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16y ago

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