Why is argon used to prevent the evaporation of tungsten in electric light bulbs?
The gas that is normally used is argon, or a mixture of argon and nitrogen. A gas is needed that • helps prevent the evaporation of white-hot tungsten • does not react with white-hot tungsten • will not form an electric arc inside the bulb Argon is the cheapest of the noble gases because it forms nearly 1% of the atmosphere, and is a major by-product in the production of liquid nitrogen.
Argon is an inert gas that will not support burning when the bulbs filament becomes white hot because of the current running through it. When a light bulb consists of tungsten, when electricity is passed through it, tungsten offers a very high resistance and it becomes hot and produces white light. At this temperature when it is exposed to air, tungsten gets oxidized. So prevent its oxidation, tungsten is burnt in the atmosphere of argon… Read More
Most common house hold light bulbs are really just evacuated to really low pressures and contain a tungsten filament. the reason being is that tungsten has high resistivity and low corrosive properties. they used to use carbon in the beginning. the reason for the vacuum is to prevent evaporation of the filament. Argon Usually they are filled with an inert gas such as nitrogen and others are filled with a gas containing low pressure mercury… Read More
An inert gas such as argon is used to fill inside in an electric bulb. The filament of a bulb is made by the metal, tungsten.
Argon does not have an electric configuration.
the basically unreactive gas argon (element) is in a light bulb to prevent the tungsten (element) filament from coming into contact with oxygen (element) and getting oxygenated.
cuz it slows down the evaporation of d filament of the bulb....so that d bulb doesn't stop working.
Because when heated, copper would react with the oxygen in the air and oxidise. Tungsten is not as reactive (I think, but check). I think Argon can also be used as a light bulb filament. Tungsten has a higher melting point than all other metals (3422 degrees C) and a very low coefficient of expansion, making it suitable for the filament in incandescent light bulbs. Argon is an inert gas used in incandescent bulbs to… Read More
Argon gas cannot react with most substances, and can extinguish a flame if it displaces enough of the oxygen around the burning material. Argon is used as an inert gas in electric arc welding to prevent oxygen from reacting with the heated materials, such as aluminum and titanium.
Argon is what fills and incandescent bulb. Argon is an inert gas and won't oxidize the tungsten filament even at very high temperatures, so the light bulb lasts months rather than minutes. Having a gas in there at all helps diffuse heat and also allows the filament to last longer than a vacuum would.
Argon is not an electrolyte. Argon is a noble gas and does not conduct and carry an electric circuit in water.
Argon(or nitrogen) and tungsten are used in incandescent light bulbs.
Tungsten <<>> An inert gas fills the light bulb. The gas is usually argon
Neon and argon are used in the light bulbs. Neon makes those flashy lights and argon prevents the tungsten filament from burning.
Argon is mostly used as an inert shielding gas in welding and other high-temperature industrial processes where ordinarily non-reactive substances become reactive; for example, an argon atmosphere is used in graphite electric furnaces to prevent the graphite from burning. Argon gas also has uses in incandescent and fluorescent lighting, and other types of gas discharge tubes.
Argon is used in electric bulb so that filament will not oxidize quickly and it gives an inert environment and heat dissipation ability from the filament. Due to argon pressure inside bulb is 400 Pa.
argon is unreactive and replaces the oxygen
By replacing oxygen in the bulbs, argon can prevent the corrosion by oxidation of the filament.
Any noble gas except helium, or beryllium used in WWII is now dangerous or tungsten, copper, zinc, nickel, fluorine, mercury, titanium, and carbon Tungsten Filament is used in Incandescent Lamps and Fluorescent Lamps Tungsten and Argon are used in incandescent light bulbs. Tungsten (chemical symbol 'W', 74)
When an electric current is passed through Argon, it becomes blue
The bulb has a filament made up of tungsten and a low pressure inert gas (argon, neon, nitrogen).
In packagin crisps to stop oxygen decaying them, and in light bulbs to stop the oxygen eroding the tungsten filament faster.
Noble gases are used in light bulbs because of their properties. For example, argon prevents tungsten filaments from evaporating. Thus, argon increases the life of the light bulb.
When excited by electric current flowing in it.
It isn't. Argon is what fills and incandescent bulb. Argon is an inert gas and won't oxidize the tungsten filament even at very high temperatures, so the light bulb lasts months rather than minutes. Having a gas in there at all helps diffuse heat and also allows the filament to last longer than a vacuum would.
Argon is a major component of air and has a much higher temperature of evaporation than Helium - therefore it is much easier to produce and cheaper.
a tungsten filament, light emitting diodes (LED), gases like neon, argon, mercuric oxide etc.
Argon and krypton
Thay have does not spourt combustion
the argon in the electric lights went unnoticed meaning- unreactive, colourless, odourless, element of rare gas
The element argon has affected society because it has created things such as electric lightbulbs and floresant tubes. Lightbulbs are the most commonly used item that is made with argon.
For Light bulbs: The filament is made of tungsten. There is a inert gas used around the filament which is usually argon, neon, or nitrogen.
The TIG (Tungsten Inert Gas) welding machine will work without the gas turned on (argon), but your weld will be contaminated due to exposure to the air and will likely crack, or have other defects in it (bubbles, etc).
The purpose of argon is to protect materials from reacting with oxygen and other gases. Argon can be found inside of light bulbs and welding to prevent the two metals from being heated when it reacts to oxygen.
Tig, or tungsten inert gas welding used to be known as Heliarc welding when it was first developed in 1941, because helium was then used as the inert gas. As the process has developed and progressed the name was changed to Tungsten Inert Gas welding. Argon or a combination including argon is now more widely used as the inert gas for this process.
We use them as atmospheres when we don't want something to react, particularly with oxygen. For instance in a filament electric lamp, the tungsten filament gets extremely hot. If the bulb contained air, the filament would oxidise immediately, as it does if the glass develops a crack. That's why we fill them with argon.
No, that would defeat the purpose. Shielding gases must be inert (e.g. argon, helium).
Argon is a highly unreactive element. It can be used to displace air or oxygen in canned goods to prevent oxydation. Please see the link.
Basically nothing. It is a vacuum tube with tungsten filament hung on to two wires. Those wires applies voltage to the tungsten filament and bulb emits light (it is very hot indeed around 3000C). Most of the recent light bulbs contains argon gas.
Argon is a mono-atomic colorless gas exhibiting an lilac/violet glow when placed in a high voltage electric field (as in gas-discharge lamps)
acetylene is a flammable gas and relies on oxygen to burn. Argon would prevent a flame by displacing oxygen because of it's density in comparison to oxygen.
Krypton emits a smokey white glow
Argon is used in welding to prevent oxygen from entering the weld site. Oxygen is basicly bad for the weld and Argon displaces the oxygen which results in a better weld (less heat stress, less air pockets (imperfections in the weld) etc.)
What is An extremely unreactive colourless odourless element of the rare gas series used in electric lights gas?
Argon is used to prevent fires in welding. carbon dioxide is used in fire extinguishers.
Argon is used in applications where an inert atmosphere is desirable (for example, it's sometimes used to keep materials from catching on fire at high temperatures). It's occasionally used in "neon" lights where it produces a bluish light, is often used as a carrier in gas chromatography, and is the usual gas used to create the plasma in inductively coupled plasma spectroscopy. Argon can be used to make lightbulbs, glow tubes, photo tubes, and fluorescent… Read More
The noble gasses are all pretty nonreactive it takes a lot to get them to react with things, so storing things with argon would prevent it from reacting.
To prevent the magnesium or sodium reacting with oxygen in the air
Its chemical unreactivity. Argon, along with helium, neon, krypton, xenon and radon are the noble gases. Because their outer shells are completely filled with electrons, they never react with any other atoms in nature. Therefore in a light bulb filled with argon the hot tungsten filament will not corrode as it would if air were present. Oxygen in the air would react with the hot tungsten, essentially rusting it and causing the bulb to fail… Read More
tungsten (or wolfram(W)) is usually used as the metal in domestic lighbulbs. The element used as the gas in domestic lightbulbs is usually argon (Ar). Hope this helps :)