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A fluorescent lamp tube is filled with a gas containing low pressure Mercury vapor and argon, xenon, neon, or krypton. The pressure inside the lamp is around 0.3% of atmospheric pressure. The inner surface of the bulb is coated with a fluorescent (and often slightly phosphorescent) coating made of varying blends of metallic and rare-earth phosphor salts. The bulb's electrodes are typically made of coiled tungsten and usually referred to as cathodes because of their prime function of emitting electrons. For this, they are coated with a mixture of barium, strontium and calcium oxides chosen to have a low thermionic emission temperature.
Light-emitting phosphors are applied as a paint-like coating to the inside of the tube. The organic solvents are allowed to evaporate, then the tube is heated to nearly the melting point of glass to drive off remaining organic compounds and fuse the coating to the lamp tube. Careful control of the grain size of the suspended phosphors is necessary; large grains, 35 micrometers or larger, lead to weak grainy coatings, whereas too many small particles 1 or 2 micrometers or smaller leads to poor light maintenance and efficiency. Most phosphors perform best with a particle size around 10 micrometers. The coating must be thick enough to capture all the ultraviolet light produced by the mercury arc, but not so thick that the phosphor coating absorbs too much visible light.
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What are fluorescent light bulbs inner wall coated with?
phosphorus
What element is found in fluorescent light bulbs?
Mercury Vapor
What element is quicksilver used in fluorescent light bulbs?
mercury
Which non metal is used in fluorescent bulbs in display advertisements?
Frequently is used neon (Ne), with a red color,
What gases are used in light bulbs?
Ordinary incandescent light bulbs are filled with an inert (electrically non-conducting) gas such as Nitrogen.Other types are filled with a gas containing low pressure mercury vapor and argon, xenon, neon or krypton.See the Related links for more information.
What is the name of those swirly light bulbs?
They are known as CFL bulbs. It stands for Compact Fluorescent Lamps.
Which is more efficient the fluorescent bulbs or the incandecent bulbs?
Fluorescent bulb is the more efficient one as compared to incandescent bulbs.
What store sells the cheapest fluorescent bulbs?
Fluorescent bulbs can be purchased at most home improvement stores. Some examples are Lowe's and Home Depot. Buying fluorescent bulbs in bulk is the cheapest way to buy the bulbs.
Do fluorescent bulbs get hot?
Yes but not as much as incandiscent bulbs
Do incandescent and fluorescent bulbs produce the same amount of heat?
No, incandescent and fluorescent bulbs do not produce the same amount of heat.
How much is a fluorescent bulb?
fluorescent light bulbs are usually from 9$-15$.
Where can I find information on fluorescent bulbs?
You can find information on fluorescent bulbs all over the internet. You can also check packages of the bulbs at department stores or grocery stores where they are sold.
Which save more energy incandescent light bulbs or fluorescent?
Fluorescent light bulbs use less electricity for the amount of light produced.
Fluorescent Light Bulbs?
form_title= Fluorescent Light Bulbs form_header= Brighten up your home with fluorescent light bulbs! What wattage do you need?*= _ [50] How many bulbs do you need?*= {1, 2, 3, 4, 5, More than 5} Where will the bulbs be used?*= _ [50]
Are CFL bulbs autovolt?
No, compact fluorescent light bulbs generally are not autovolt.
Do light bulbs provide fluorescent light?
No it does not
Can you use compact fluorescent bulbs in garage door opener?
Yes, you can you use compact fluorescent bulbs in a garage door opener's lamp holder.
