Some pupil think that we can see objects which are not light sources because our eyes give out light, just like torch. How can you show that this idea is wrong?
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Explanation:
Most objects do not reflect light. They absorb light and re-emit it. When you see regular objects like a house or tree, you are not seeing reflected light. You are seeing light which is emitted by the object. Most objects do not reflect light. They absorb light and re-emit it .Light is not visible in a vacuum. If we see lighten up surroundings, they are glowing concentration of molecules that we see. Light itself is not visible.
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