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They aren't. Ordinary filament lamps aren't coated with anything at all. The inside of fluorescent lamps are coated with a mixture of phosphors (NOT phosphorus but very complex metal salts). Fluorescent lamps work in two major steps. The electric current causes Mercury vapour to emit ultra-violet light. The UV is absorbed by the phosphors and they re-emit it as coloured light. The mix of phosphors are there to emit a variety of colours so that the overall effect is a white light.
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Which light bulbs are coated on the inside with a powder?
fluorescent
What are carbon filaments for light bulbs?
Modern light bulb filaments are usually Tungsten not Carbon. However early bulbs used things like silk coated with Carbon. Filament means thin thread. The bulbs are filled with inert gas like Argon to stop the filament from burning up with oxygen. Arc lamps use Carbon rods though.
Are light bulbs fragile?
why light bulbs are fragile
Do light bulbs emit light or suck dark?
Light bulbs emit light.
What is the name of those swirly light bulbs?
They are known as CFL bulbs. It stands for Compact Fluorescent Lamps.
What are fluorescent light bulbs inner wall coated with?
phosphorus
Which light bulbs are coated on the inside with a powder?
fluorescent
What bulbs do not have filament And how do they light up?
Flourescent bulbs. They have no filament and they light up. They have argon gas and a small amount of mercury in them. When electricity is added, the argon and mercury atoms get excited and collide against each other and create light. The light is ultraviolet light and if the bulb is not coated inside with phosphorous, you have a black light.
Is the inner wall of a fluorescent bulb is coated with potassium?
Phosphorus
What are carbon filaments for light bulbs?
Modern light bulb filaments are usually Tungsten not Carbon. However early bulbs used things like silk coated with Carbon. Filament means thin thread. The bulbs are filled with inert gas like Argon to stop the filament from burning up with oxygen. Arc lamps use Carbon rods though.
What bulbs go in a s-10?
Headlight bulbs, high and low beam, parking light bulbs, signal light bulbs, brake light bulbs, dash light bulbs, interior light bulbs, plate light bulbs, etc.
Why is phosphorus named phosphorus?
phosphorus means "bringer of light".
Is xenon in light bulbs?
In some light bulbs.
Are light bulbs fragile?
why light bulbs are fragile
What household items contain phosphorous?
Matches, strike anywhere and safety matches, both contain P4S3 (called phosphorus sesquisulfide or tetraphosphorus trisulfide)
Do light bulbs emit light or suck dark?
Light bulbs emit light.
Do light bulbs emit light or suck in dark?
bulbs emit light
