Where does light go when we switched off the Source of light.

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When a light source is turned off, the light in a room is absorbed by the walls, while in open spaces, it continues to travel. Theoretically, a closed room made of perfect, non-absorbing reflective materials could keep light from being lost, but achieving perfect reflection requires ideal conditions. Such a room would not remain bright indefinitely, as light would eventually be absorbed by any observer present. The discussion emphasizes that even highly reflective surfaces are not sufficient; only perfect crystals of infinite size could significantly extend light retention. Ultimately, light will be absorbed by any objects or individuals within the space.
Alyrehan
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Hi, My Question Is taht where does light go when we switched off the Source of light.
 
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What are the surroundings? In a room, the light gets absorbed by the walls. Out in the open (flashlight), it keeps on going.
 


Is it in theory possible to create a closed room with highly reflecting, non-absorbing materials so that the light isn't lost? would this room stay bright? If so, I guess the viewer would absorb the light eventually in the process of observing the room.
 


digijoe said:
Is it in theory possible to create a closed room with highly reflecting, non-absorbing materials so that the light isn't lost? would this room stay bright? If so, I guess the viewer would absorb the light eventually in the process of observing the room.

"Highly" reflecting is not enough, it has to be perfect. The walls would have to be perfect crystals of infinite size. But sure, playing on crystal perfection and size, you can tune how long the light will stay inside. Well, at least one wavelength and its harmonics.
 


Dr Lots-o'watts said:
"Highly" reflecting is not enough, it has to be perfect. The walls would have to be perfect crystals of infinite size. But sure, playing on crystal perfection and size, you can tune how long the light will stay inside. Well, at least one wavelength and its harmonics.

But light will be absorbed very soon by YOU
 

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