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Why red light is used as the traffic light?
red light is used in traffic lights because red light has a "longer wavelength" than other colours
Low-frequency red light is used in dark rooms because it does not expose the film. This is because the red light has a low?
Red light has low energy.
What element produces a red light in advertisement signs?
The gas used to produce red light when an electric current is passed through it is neon.
What colour is a white object under red light?
The white object will look red because the white surface reflects all colors and since only a red light is used it will only reflect red.
Why does red appear red when light falls on it?
It absorbs non-red light and reflects red light.
Which colour light is used for developing and printing?
RED
Which rays are used to take photographs in dark?
infra red
What colour light must be used when developing photographs?
If you are meaning black and white or colour films there has to be no light what so ever. Paper printing black and white prints can be done under safelight conditions, usually a deep yellow/orange safelight. Colour printing should be in total darkness. ordinary black & white? yellow or red panchromatic black & white? no light color? no light
What causes red eye in photographs?
The bright light from the flash reflects off the back of the eye where there are a great many blood vessels, this makes the light appear red as it is reflected back out of the eye.
Why red light is used as the traffic light?
red light is used in traffic lights because red light has a "longer wavelength" than other colours
What are red light bulbs used for?
To make red light.
What colors does a star with nuclear fusion beginning have?
A new star will usually have hydrogen alpha light. This light is red but is difficult for the human eye to detect. If you look up M42, the Great Orion Nebula, most long exposure photographs will show this red light.
Which color light is best used for plant growth?
Red color light
Why red bulbs are used as a brooders?
The only thing the light is used for is heat which is what red light is. All other colours of light is only an irritant to the chicks so steps are taken to eliminate them.
Is visible light used for photosynthesis?
Yes,visible light is used. Frequencies of blue and red absorbed effectively
What is red light bulb for on 2000 blazer right hand dashbaord for?
Red means STOP. What does it say? Red is always used for the oil pressure light.
Are red light cameras still being used in Springfield Missouri?
Yes, red light cameras are still used in Springfield, MO. My friend was driving there and said she saw a red light camera, too. I hope this helped! Happy Driving! XD
