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light (man made (bulbs give of light because there is a thin metal wire in…
light
man made
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infrared light is a light not visible to animals or humans so the camera crew in documentaries often use it for there cameras so the animals don't get startled
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natural
in space
the sun and stars are massive gassy fireball of light.the suns light reflects of the moon which then hits us .
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light travels at 300,000,000m per sec
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