On the other hand, the work does not just end with the image. or How long will the mirrors that come into contact with the light withstand the heat caused by the light? Or how long will the light source be able to function?

Come on ourselves Let’s throw it in a room with mirrors and then turn on the light. What will happen?

Probably most of us think that in such a situation, the light will bounce off any surface, so that the room will shine forever.

Photons emanating from the light source when every corner of a room is covered with a mirror, It is perfectly reflected by the mirrors and is not absorbed. Since the light source will produce light until its lifetime is over, the number of photons in the chamber also increases as time passes. That is, the room becomes increasingly brighter and after a certain time becomes bright white.

But for this to happen, not only the mirrors, but also the light source must be flawless. Because the most important thing is not only that the light can be reflected flawlessly by the mirrors, With the increase in the number of photons, the temperature can also rise.

Logically, heat does not damage the mirror surfaces, but the light source gradually warms itself.

Naturally, in such a case, the light source heats up quickly and eventually explodes due to overheating. For this reason, the light source to be used must It is produced and selected in a very resistant way by considering all these situations. must.

Moreover, in real life it is quite difficult to create such a system, because most mirrors reflects light with an average efficiency of 90-95%. This means that 5-10% of the light is absorbed. Therefore, this system cannot keep its brilliance forever. At the same time, a balance is achieved between the photon generation rate of the light source and the rate at which the mirrors absorb the photons.

In any case, a room covered with mirrors will certainly be quite bright, but this brightness cannot continue to increase indefinitely, and the increase in temperature can only be sustained until the light source explodes.

When the room covered with mirrors that we mentioned reaches its light balance, even if the light source is suddenly turned off, the light source and the mirrors start absorbing the remaining photons in the room. In such a case, the room is quickly plunged into darkness.

There is only one condition for this situation to continue forever. If if the mirrors are perfect and the light source is chosen completely transparentThere is no surface left to absorb the photons, and the light is never replaced by darkness. But this seems highly impossible.