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Incandescent light bulbs have filaments which are made mainly from the element tungsten and/or alloys which include tungsten.
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Tungsten is the metal element used for the filaments in incandescent light bulbs.
Experiments were made with different materials to use as the filament, including natural fibres, pure metals and alloys of different metals, to find the material which had the longest life whilst glowing brightly enough to give out visible light. The metal Tungsten was found to be the best, because of its high melting point (almost 3700 K) and good resistance to electrical current.
For more information see the answer to the Related Question shown below.
Carbonized cotton was originally tried, and had moderate success. However, the material that finally worked the best was a filament made of tungsten, which shone brighter and lasted much longer.
It is made up of Tungsten which have an melting point of 3380 degree Celsius.
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∙ 9y ago
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∙ 12y agoThe "filament" is a special thin tungsten alloy wire.
An electric current is passed through it, which heats the surrounding gas that is held inside the lamp's glass bulb.
The gas is often a mixture of gases which include nitrogen and small traces of one or more halogens (such as Iodine, Bromine, Krypton).
The electric current heats up the filament so much that it glows white hot without melting , thus releasing energy in the form of lots of heat and some light, which is why such lamps are so inefficient at converting electrical energy into light.
The halogen gas makes the lamp operate for a much longer time than normal non-halogen lamps can operate. This happens because the halogen gas makes a good proportion of the tungsten atoms - which are continually thrown off from the filament whilst it is lit up - return to the filament instead of being deposited on the lamp's glass bulb, thus greatly prolonging the life of the filament.
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∙ 9y agoIncandescent light bulb filaments are made of tungsten, the most tensile metallic element and second-most tensile of all elements after a diamond, which is pure carbon. Tensile strength is the property of a substance to withstand breaking when stressed by stretching, the opposite of brittleness.
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∙ 13y agoMetal.What type of metal?Err..................tungsten.
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∙ 12y agoThe filament of a light bulb made out of an element known as tungsten.
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∙ 12y agoi once studied. they are made of TUNGSTEN.
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∙ 14y agoTungsten
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∙ 13y agotungsten
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∙ 11y agotungsten
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What is the thin coil of wire inside a light bulb called?
If you are talking about an incandescent light bulb then its called a filament. It is thin so that it has a high level of resistance. Current going through the filament causes it to heat up and give off EM radiation in the spectrum of visible light.
What does a light bulb have to do with an electrical light source?
A light bulb is a source of electric light. In an incandescent light bulb, the glass bulb forms a protective shield around a glowing filament. The air inside the glass bulb is removed, or replaced with an inert gas. Electric current is passed through a thin metal filament (usually tungsten), which causes it to glow white hot, giving out light. The protective bulb stops the filament from burning up, as it has no Oxygen.
What does the filament of a light bulb allows the light bulb to change electrical energy to?
The filament of a light bulb overs enough resistance to current flow, that the filament heats up so much that it will glow and produce visible light.
The part of a light bulb that is a poor conductor so that the friction causes it to light up and glow?
That part of a light bulb that causes light to light up is called the filament, and it is typically made from tungsten.
Who discovered the light bulb and when?
Humphrey Davy created the electric arc in 1800 (no bulb). Joseph Wilson Swan created the carbon filament which produced light in 1878. Charles Francis Brush used Carbon Arc lighting to illuminate a public square in 1877. In 1879 Thomas Alva Edison put it all together in an oxygen free bulb that was "almost" perfect. Lewis Howard Latimer who had been on Edison's team invented an improved carbon filament in 1881 and a unique manufacturing process that produced the filament in 1882. In 1903, Willis R. Whitney solved the problem of darkening the inside of the bulb with a coating of the filament. The light bulb as we know it involved exchanging the the carbon filament for one made of tungsten invented by William David Coolidge in 1910 and the incadescent bulb lit up the world.
What is the thin wire inside a bulb called?
It is called a filament and usually made of tungsten steel.
Why do light bulbs produce heat or light?
The electric current heats up a filament inside the bulb so hot that it glows. Most of the energy produces heat and the remainder light. The inert atmosphere inside the bulb extends its life. The filament is made of a high temperature material like Tungsten
What is the insulator in a light bulb?
Glass is the insulator in a light bulb. The base has a heavy piece of glass to separate the ring from the center, and there is a glass support inside the bulb to hold up the filament and separate the wires going to the filament.
How the bulb light?
An electrical current is passed through the high resistance filament in the bulb, causing it to become white hot and so give off light. The inside of the bulb is filled with an inert gas, such as nitrogen, so the filament does not burn up .
How bulb light?
An electrical current is passed through the high resistance filament in the bulb, causing it to become white hot and so give off light. The inside of the bulb is filled with an inert gas, such as nitrogen, so the filament does not burn up .
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.
What is the purpose of the filament inside the light bulb?
The filament is a special metal composition of tungsten that conducts current and heats up and emits light as a result of the current and its internal resistance.
What is the thin coil of wire inside a light bulb called?
If you are talking about an incandescent light bulb then its called a filament. It is thin so that it has a high level of resistance. Current going through the filament causes it to heat up and give off EM radiation in the spectrum of visible light.
Can electricity still pass through a bulb which has fused?
If the bulb lights up then electricity is passing through the bulb. If the bulb doesn't light up then electricity is not passing through.
What is bicycle lamp made of?
It's made of plastic then there's a filament inside to make it light up.
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 .
How does the filament in a light bulb work?
it is made of tungsten and is a resistor when current flows thru it it heats up and glows
