Traditional Culture Encyclopedia - Traditional stories - How to verify the reversibility of light path by using the reflective device of flashlight
How to verify the reversibility of light path by using the reflective device of flashlight
Set a reflector in the corner of the roadside. According to the principle that the light source can reflect parallel light by focusing-flashlight, put the flashlight on one side of the corner and we are on the other side. If you can see the light from the flashlight through the mirror, you can prove that the light path is reversible.
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