What is the filament inside the bulb made up of?

Answer 1

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.

Answer 2

The "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.

Answer 3

Incandescent 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.

Answer 4

Metal.What type of metal?Err..................tungsten.

Answer 5

The filament of a light bulb made out of an element known as tungsten.

Answer 6

i once studied. they are made of TUNGSTEN.

Answer 7

Tungsten

Answer 8

tungsten

Answer 9

tungsten