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Q: What is the purpose of halogen gas in a tungsten-halogen lamp?
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What is lamp types?

There are two types of lamps the tungsten halogen lamps and incandescent lamps. Tungsten Halogen Lamps are similar to incandescent lamps and produce light in the same manner from a tungsten filament; however the bulb contains a halogen gas (bromine or iodine) which is active in controlling tungsten evaporation, whereas the incandescent lamp suppresses tungsten evaporation.


What is the difference between a metal halide lamp and a halogen lamp?

A halogen bulb is a traditional tungsten filament bulb filled with a noble gas that gives off a soft, yellowish light. In a metal halide bulb, the light emitted is bright white or even bluish. They have a longer life than halogen bulbs, but their brightness can diminish over time.


What type of gas is in a tungsten-halogen light bulb?

Halogen gas is in a Tungsten-Halogen Light Bulb.


What gas is found in halogen lamps?

Halogen.


What gas is a halogen filled with?

Halogen is a gas, so your question doesn't make much sense. If you're asking about a halogen (light) bulb, then the answer is: mainly halogen.


Why does tungsten halogen lamp have a longer life span than the tungsten filament lamp?

One of the problems all incandescent lamps have is evaporation/sublimation of the filament. You might have a hard time imagining a metal like tungsten becoming vapor, but it does, its slow but the filament does turn to vapor. In ordinary lamps this hot tungsten vapor condenses out on the cool glass envelope, darkening it. The filament slowly gets thinner too and as it does some parts begin to thin faster, those parts get hotter causing the tungsten to evaporate faster making them thin even faster. Eventually some part of the filament gets too thin and the lamp burns out.In a halogen lamp part of the fill gas of the lamp is a halogen (e.g. chlorine, bromine). Metal vapor and the halogen gas react, creating a metal halide gas. High temperature breaks down this metal halide gas, depositing the metal and reforming the original halogen gas (the catalyst). As the highest temperature in the lamp is on the filament (with the hottest parts of the filament being the thinnest), the tungsten is deposited right back on the filament where it came from (with more of it being deposited on those parts that are thinnest, thus patching them back up). Thus since the filament in a halogen lamp thins much much more slowly (and is self patching when spots thin faster, instead of running away and thinning even faster) than that in an ordinary lamp it takes much longer before it burns out.


Is AR a halogen?

Argon is a noble gas. It is not a halogen. Fluorine is a example for that.


Which is a filling gas that's used in tungsten-halogen lamps?

That'd be Halogen.


What family of gas is chlorine?

Chlorine is a halogen.


Is a halogen gas with 22 neutrons?

chlorine


Is krypton halogen noble gas or neither?

No, it is a noble gas


Is iodine a noble gas?

Iodine is a non-metal. It belongs to group 17 (halogen family).