Please consider a closed room with light reflecting walls and in the centre of the room there is a Lighting Bulb. Now if I switch on the bulb, the room is obviously illuminated with light. When I switch off the bulb, since the light photon cannot escape the room, will the room be infinitely illuminated?
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1$\begingroup$ Possible duplicate of How are photons "consumed"? $\endgroup$– glSCommented Oct 22, 2015 at 5:58
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$\begingroup$ hi, thanks for your comment. Anyhow here I don't use a wooden wall but light reflecting wall. $\endgroup$– Johny RoyanCommented Oct 22, 2015 at 6:03
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$\begingroup$ in the linked questions the walls are mirrors $\endgroup$– glSCommented Oct 22, 2015 at 6:04
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$\begingroup$ OK. Anyhow can you answer with Yes or No for my question $\endgroup$– Johny RoyanCommented Oct 22, 2015 at 6:09
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$\begingroup$ Hi Johny, see the link I've suggested - the answer is no. See also Why do light disappears the moment we switch off the source (inside the wooden box)?. $\endgroup$– John RennieCommented Oct 22, 2015 at 6:31
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