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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1Possible duplicate of How are photons "consumed"? – glS Oct 22 '15 at 05:58
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hi, thanks for your comment. Anyhow here I don't use a wooden wall but light reflecting wall. – Johny Royan Oct 22 '15 at 06:03
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in the linked questions the walls are mirrors – glS Oct 22 '15 at 06:04
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OK. Anyhow can you answer with Yes or No for my question – Johny Royan Oct 22 '15 at 06:09
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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)?. – John Rennie Oct 22 '15 at 06:31
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@John Rennie, thank you very much for this useful information. – Johny Royan Oct 22 '15 at 06:33