walls, ceiling , and floor are all super reflective
2006-10-06 19:05:48 · 4 answers · asked by luimast 1 in Science & Mathematics ➔ Physics
if you have a perfect vacuum in the room, the light will go on forever (assuming the light-bulb and socket are also super-reflective)
2006-10-06 19:20:54 · answer #1 · answered by atheistforthebirthofjesus 6 · 1⤊ 0⤋
In reality is would take very small time interval.
It would seem as though the it became dark instantly when you switched off the light.
If the surfaces reflected 100% of the incident light, then (I may be wrong) the light would continuously reflect forever. However, that is not possible because nothing is 100% reflective.
2006-10-07 11:58:30 · answer #2 · answered by jimmy_siddhartha 4 · 0⤊ 0⤋
W/(2*186,000*5,280) seconds, if W in ft.
With perfectly reflective walls, floor, and ceiling, the light will go out due to destructive interference.
2006-10-07 02:18:25 · answer #3 · answered by Helmut 7 · 0⤊ 1⤋
Depends on how quick you can close your eyes...
2006-10-07 02:37:07 · answer #4 · answered by Angel of Man 4 · 0⤊ 1⤋