Where the light goes when I switch off the lamp?

Answer 1

I like this question. If you mean where does the light in the sense of illumination of the room go, rather than light from the bulb/filament, then it's absorbed by the surrounding surfaces. As light travels very fast, this absorption takes virually no time at all and is instantaneous.

I wonder - if you had a room with perfectly white reflecting surfaces (impossible, I know) and switched off the light source, would it stay light?

Answer 2

Light dosen't go anywhere. Light is made up of photons. so when we switch on the lamp the electric current ionizes the gas inside it and which in turn emits photons which we normally called light. Now when we switch off the lamp the current goes off, the gas gets dis-ionized and it stops emitting photons. So we cannot see anything.

Answer 3

Nowhere. If you switch off the lamp, the lamp stops producing any light

Answer 4

The light that has already left the bulb bounces off the surfaces in the room, with each reflection absorbing a little or a lot of the energy (depending on the reflectivity/absorption of the surface). The photon (light) energy is converted to heat energy (phonons), warming everything in the room slightly.

Answer 5

The "light" is created by the current flow. There is no current flow when the switch is "opened".

Answer 6

It goes to the refrigerator, and while we're at it...How does my thermos know to keep hot things hot and cold things cold????