In 1958, a new type of incandescent lamp was launched in the market.  They named it halogen bulb.  It’s efficient in burning brighter and longer than ordinary electric bulbs, making it the more suitable solution in instances when especially bright lights are called for.  Since halogen light bulbs burn with more intensity and live longer, they end up being much more reliable as compared to ordinary incandescent light bulbs.

Halogen-containing bulbs and incandescent bulbs have quite the same styles, taking into account that the former were a variation of the second item.  Similar to the ordinary incandescent light bulb, a halogen lamp is made up of tungsten filament which is covered in a bulb.  However for the latter, the light bulb is made of quartz instead of glass.  Quartz survives much higher temperatures than glass. Hence, the quartz light bulb can come in close to the filament, consequently allowing such bulbs to be smaller than regular electric bulbs.

As the name suggests, halogen lamps contain halogen gas inside the bulb encasing.  Light bulbs need to have a nonreactive or inert gas in the bulb to prevent chemical reaction with the extremely hot tungsten.  Incandescent lamps have argon or nitrogen, though the advanced version contains halogen gas in its place.  Normally the halogen gas is actually iodine.

Most electric bulbs operate by enabling electric current to move through the tungsten filament.  Considering that this kind of filament is an extremely thin line, it has high resistance which is transformed into heat the moment current crosses.  This heat builds up until the line glows white hot.  Voila! You have a functioning lamp.  However, as the heat triggers the filament to shine, it is likewise this particular heat which causes its slow deterioration.  Since tungsten is heated up to tremendously high heat, it vanishes.  Tungsten particles end up settled on inner surfaces of the light bulb in ordinary lamps.  But in sophisticated lamps with halogen gas, the halogen responds to tungsten particles to hold back deposition as well as avoid darkening of lamps.  Tungsten particles are consequently re-deposited on the filament making it survive longer.

As mentioned, any halogen bulb can burn brighter than an incandescent light bulb. And since they shine brighter, they glow a lot warmer too.  The quartz encasement is also a lot hotter considering its nearness to the glowing filament.  This heat can be more than enough to ignite a combustible material close by.  Hence, for precautionary measure, halogen based light bulbs should be positioned away from combustible and flammable items.  Very careful storing of the light bulbs needs to be done to prevent accidents and burns.

Authorities do not recommend touching halogen bulbs with bare hands because this would ruin the quartz surface area with oils and salts from your skin.  The unprotected quartz surface turns into a weak spot to reduce the life expectancy of the bulbs.  Therefore, the bulbs must only be held, soon after being cooled off in the socket, with gloved hands.  In the event that accidental skin contact has been made, the bulb should be wiped completely.

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