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Light travels in form of Electro Magnetic waves. EM waves, carry their energy in small packets of energy named Photon. (imagine small pieces of water baloons are hitting a surface and splashing their water on e surface) that's how light is transmitted, and you can see its reflection. Now imagine that you out ur hand on top of that surface, instead of the surface your hand will get wet. In scientific terms, your hand is absorbing the energy, and blocking its transmission path. So the surface will be left ( according to our analogy, surface will remain dry) untouched with the photons, that's why it will be dark.

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13y ago

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