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A red shirt appears black in a completely dark room because there is no light for it to reflect, so our eyes perceive it as black.

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1y ago

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Do neon lights get hot when they are turned on?

Neon lights do not get hot when they are turned on because they operate at a low temperature. The heat generated by the electricity is dissipated by the glass tubing, so the surface of the neon light remains cool to the touch.


If the lights in a room are off the circuit is?

If the lights in a room are off, the circuit is open, meaning there is a break in the flow of electricity and the lights cannot receive power. When the lights are turned on, the circuit is closed, allowing electricity to flow and power the lights.


Why are the lights turned off in making a photographic film?

Lights are turned off during the photographic film developing process to prevent exposure to light, which can interfere with the development of the film. Light can cause premature exposure of the photosensitive chemicals on the film, leading to unwanted effects or ruining the final image.


Do night lights plugged in but not on use energy?

Yes, night lights that are plugged in but not turned on still use a small amount of electricity, referred to as standby power. It is often recommended to unplug devices when not in use to save energy and reduce electricity consumption.


When you turn on your hairdryer and the bathroom lights dim this is because of the increase in?

This is because of the increase in electrical current draw when the hairdryer is turned on, which causes a voltage drop in the circuit. The voltage drop results in the decrease in power available for the lights, leading to them dimming momentarily.

Related Questions

Why are lights turned off in movies?

because the lights on the movie screen will appear brighter (you get the full effect of the colour on the big screen)


How does the undertaker appear while the house lights are turned off?

My Guess Is He Is Under The Ring.


When the lights are turned off does a colour of something still exist?

Absolutely - Whatever color was there with lights or daylight is also there during darkness. You just can't see it anymore.


What does the lights mean when ya ignition is first turned on before the miles appear mean in a peugeot?

hi i think that is your oil level


How do you turn on the parking lights on a 2002 Volkswagen beetle?

The parking lights are turned on when the headlights are on and you pull out on the light switch. The parking lights cannot be turned on by themselves.


Why are all the lights in the house on?

The lights in the house are on because someone has turned them on.


When do new yorks Christmas lights go up?

WHEN ARE THE CHRISTMAS LIGHTS TURNED ON IN NEW YORK CITY WHEN ARE THE CHRISTMAS LIGHTS TURNED ON IN NEW YORK CITY


Who turned out the lights on Halloween math problem?

Whp turns out the lights on halloween


Why would the parking lights stay on after the car is put into park and the engine is turned off?

if you leave the parking lights switch "ON" the lights will remain on, even if the car has been turned off.


The obstruction lights are turned on .?

automatically manually


Why wont the head lights and rear lights turn off after the ignition is turned off?

May have to be turned off manually Auto sensor bad


How do you make a circuit so the lights can be turned on and off separatley?

To design a circuit so that lights can be turned on and off separately, we connect the circuit in parallel.