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Flourescent bulbs. They have no filament and they light up. They have argon gas and a small amount of Mercury in them. When electricity is added, the argon and mercury atoms get excited and collide against each other and create light. The light is ultraviolet light and if the bulb is not coated inside with phosphorous, you have a black light.
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∙ 16y ago
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How efficient is a filament light bulb?
about 10% the filament light bulbs give off about 90% heat and 10% light
Do incandescent bulbs contain a filament of platinum?
yes, incandescent bulbs do not contain a filament of platinum. Yes they do contain a filament called a tungsten.
What causes the left tail light not to get brighter when braking even though both bulbs light up when the lights are turned on on a Dodge Stratus?
Many taillight assemblies are equipped with bulbs with dual filaments, one for tail lights and one for brake lights. If you have one bulb with two filaments, then the problem you describe sounds like the brake light filament in the left bulb is burned out but the tail light filament is working.
How can you tell if a halogen bulb is unused?
Halogen bulbs have filament like standard incandescent bulbs. When unused, the filament will appear silvery and clean. After use the filament may discolour.
What is the metal of a light bulb made of?
The wire inside of an electrical light bulb is called a "filament". The word filament comes from the Latin word "filum" which means "thread". In various fields there are many different types of filaments with different uses, however the ones inside of light bulbs are made out of tungsten and work by super-heating by passing electricity through it.
What makes up the filament of light bulbs?
Filament of light bulbs are made up of Tungsten.
How does a light bulb light?
light bulbs have metal contacts that connect to an electrical circuit and a filament. power lights up the filament in the bulb .
Is mercury used for the filament in light bulbs?
No, not in the filament. You are probably thinking of compact fluorescent light bulbs, which do contain mercury.
What happens to the filament when light bulbs blows?
The filament breaks.
Why do light bulbs have the coil in the middle?
That is the filament. Electricity traveling through the filament heats it to the point of glowing brightly - that is the light bulbs "light".
What is in filament of light bulbs?
tungsten
How available are filament light bulbs?
I have not had any problem obtaining incandescent light bulbs.
What is the thickness of the filament in light bulbs?
the filament is neither too thick nor too light
What are domestic light bulbs?
Domestic light bulbs are simply the light bulbs (usually of the filament type) used in the home.
Does a car use filament?
The light bulbs do.
What kind of light is used in light bulbs?
Light is not used in light bulbs; light is created in light bulbs. From Edison to the invention of solid state devices, light bulbs were mostly incandescent. They made light by running electricity through a tungsten filament inside a glass bulb with the air removed. The filament got very very hot and emitted light waves (photons). The lack of air (oxygen) preserved the filament from burning up. The efficiency was atrocious, but they made light.
How do tungsten-halogen bulbs generate light?
Inside a tungsten-halogen bulb, electrons flow through a tungsten filament. The filament heats up and emits light.
