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Alyrehan
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Hi, My Question Is taht where does light go when we switched off the Source of light.
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.
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.
When we switch off the source of light, the light does not actually "go" anywhere. It simply stops being emitted from the source. Light travels in straight lines until it is either reflected, absorbed, or scattered by objects in its path.
No, the light does not disappear. It continues to exist in the form of electromagnetic energy, but it is no longer being emitted from the source.
No, light cannot be destroyed. According to the law of conservation of energy, energy cannot be created or destroyed, only transformed from one form to another. So when we switch off the source of light, the energy is transformed into other forms, such as heat.
A room becomes dark when we turn off the light because there is no longer any source of light emitting electromagnetic energy. Without this energy, our eyes are unable to detect any visible light, making the room appear dark.
Yes, light can travel through a vacuum. In fact, light travels fastest in a vacuum compared to any other medium. This is because there are no particles in a vacuum to slow down or scatter the light waves.