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All lamps will give off UV but incandescent lamps will give-off unmeasurably small amounts. Discharge lamps essentially all contain Mercury and mercury in the discharge gives off UV. However, most lamps are enclosed in UV-absorbing glass, either as primary containment or as an outer enclosure (bulb), so very little gets beyond the outer bulb. If any lamp emits more then almost no UV, it has to be marked (R in the US), and a warning given that it cannot be used in an open fixture - in other words, it must be used behind a UV absorber (usually what is called soft glass - similar to normal window glass).
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What is it that normal light bulbs give off much more than fluorescent light bulbs?
Heat.
True or false a planet is a body that gives off light of it owns?
A planet only reflects light from a star like our Sun. Earth is a planet and from experience it does not shine. Stars give off their own light.
Suppose you have a number of light bulbs connected on a circuit with each bulb on a separate branch what happens if one of the bulbs burns off?
As they are connected in parallel (each has its own branch) the remaining bulbs keep shining exactly as they did before.
Does luminous light give off heat?
yes
What does the sun a bOnfire and a street lamp has in common?
They all contain Sodium which gives off a unique orange glow when heated.
What is it that normal light bulbs give off much more than fluorescent light bulbs?
Heat.
Which light bulbs give off all the colors of visible light?
Incandescent bulbs or if you prefer, plain old fashioned light bulbs, the ones with a filament (the bit of wire inside) that gets very hot and gives off light. They tend to give off a bit more at the red end of the spectrum, particularly the lower power ones but they do give off all the colours. Some run the filament at a sufficiently high temperature to give a pretty balanced white light. Most of the modern energy efficient bulbs give off light at a limited number of frequencies but much more light per watt of power that goes in.
How does a xenon bulb compare to halogen?
Xenon bulbs give off whiter light than Halogen bulbs, which give off a more yellow tint. Also, Halogen bulbs give off more heat than Xenon bulbs.
How efficient is a filament light bulb?
about 10% the filament light bulbs give off about 90% heat and 10% light
How resistence important?
Resistance is important because it is what resists the flow of charge and can give off heat. Light bulbs use resistance to give off their light since the light is from the heat given off from resistance.
What light bulbs provide the most natural light?
Any natural light bulbs that use incandescent lighting will work well, and give off a rounder light than the "sterile white" lighting of normal bulbs.
Which light bulbs give off very little energy as infrared rays?
This is true of LED lights
Why are high resistance materials useful in light bulbs?
The filament in a light bulb causes the light bulb to heat up and give off life.
Things that give off light?
The sources of light are electrons. When electrons are exited to a higher energy state, they fall back to their base energy level and in doing so release a photon of light. Thus light is produced in conditions where atoms/electrons become excited - places that are hot.
What gives off light in tungsten light bulbs?
The filament in the bulb gives off light.
How does the light bulb improve people's lives from the 19th century?
So their houses and streets can be brighter because light bulbs give off more light than candles
What planet does not gives off its own light?
Planets dont give off light therefore all planets dont give off its own light
