What happens to light when the source is turned off?

When the bulb is switched off, no new photons are emitted and those that are already present inside the room get reflected off objects countless times until they’re all absorbed completely.

Does light ever stop?

Light is made up of particles called photons that travel like waves. Unless they interact with other particles (objects), there is nothing to stop them. Unlike some types of particles, they do not decay, meaning that they do not spontaneously turn into other types of particles.

What happened to the light bulb when the switch was off what does it indicate?

Most recent answer When the switch is ON the bulb and resistor are “shorted” and the neon bulb does not glow. When the switch is OFF the neon bulb and resistor are still in-circuit across the (open) switch contacts. The bulb and resistor can provide a path for leakage current.

Is it close the light or turn off the light?

(US, regional, Southern US) To turn off or switch off (an electrical device). Cut off the lamp so I can get some sleep. To turn off (a light). 1942 in 1944 ADD nWV, Philadelphia PA, ‘Close the lights’ = turn out the lights.

How can light disappear?

As the particles in the medium vibrate, energy is lost to heat, viscous processes, and molecular motion. So, the sound wave gets smaller and smaller until it disappears. In this case, some light is absorbed and lost as heat, just like sound.

How does light disappear?

The fields in the photon, being exactly the same type of fields in the atom, interact with the atom and the photon “disappears” as the energy that it was made of is transferred by these fields into the atom.

Why does light bulb glow when off?

When you turn off the power to the bulb, the filament takes a few seconds to start cooling down. So it continues to glow slightly as the filament is still quite hot for a few seconds. The primary culprit behind this kind of a residual glow is fluorescent bulbs.

Will the bulb if you turn on any of the switches?

Only when both switches are closed, does power flow and the light bulb illuminates. When both switches are open power does not flow and the light bulb is off. However, whenever either or both of the switches are closed, power flows and the light will turn on.

Why do people say shut the lights?

People came to say “close the lights” because electrical schematics use the terms “closed” and “open” gates in reference to switches allowing or dissallowing the flow of electricity – The same as water gates open and close… only the opposite.

https://www.youtube.com/watch?v=3pMC53Goaa4