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Why are low pressure mercury-vapour lamps coated with phosphors?
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What are some items that contain phosphors?
Compact Fluorescent lamps, Fireflies, Glowworms, some underground worms!!, and some phosphorescent paints, all contain phosphors.
What is the difference between high and low pressure mercury lamps?
how are low pressure mercury lights made and how do they operate?
What are the names of minerals used to make a light bulb?
There are many sorts of light bulb these will have different components and therefore minerals.However here are some elements/minerals used in their manufacture:Tungsten,QuartsNitrogenIronMercuryPhosphorousSiliconGermaniumChromeLeadTinCopperAluminumIf your referring to florescent lamps the coating is usually phosphor based. This mineral will absorb ultra-violet light and re emit it in the visible spectrum. The insides of standard lamps are sometimes coated with a light-diffusing mineral such as talc.
How do adjustable height lamps work?
The working principle behind the adjustable height lamps is very simple. The adjustable height lamps enables the users to adjust the height of the lamps to their preferred height.
What are the main benefits of anglepoise lamps?
The main benefits of anglepoise lamps are the low economic cost they have. Moreover, one can change these lamps without a lot of cost for his household.
Why are light bulbs coated with phosphorus?
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.
What are some items that contain phosphors?
Compact Fluorescent lamps, Fireflies, Glowworms, some underground worms!!, and some phosphorescent paints, all contain phosphors.
Why do Compact Fluorescent Lamps take longer to reach full brightness?
The mercury needs time to vaporize and interact with the phosphors lining the tube.
What are the different types of light?
Incandescent Lamps Light Emitting Diode Neon Lamps Fluorescent Tubes Compact Fluorescent Lamps Halogen Lamps Metal Halide Lamps High Intensity Discharge Lamps Low Pressure Sodium Lamps High Pressure Sodium Lamps
Is there a white blue lamp in fluorescent lamps?
No, the light is produced by an electrically charged low presure mixture of mercury vapor and rare earth phosphors.
What is the difference between high pressure low pressure sodium lamps?
the pressure ;)
What is hpsv lamp?
High Pressure Sodium Vapour Lamps
Can a mercury lamp be run at low pressure?
Yes, Low Pressure and Medium (High) Pressure Mercury lamps are manufactured and used for UV treatment of water etc. Medium (High) pressure UV lamps have a relatively broadband output, with many emission wavelengths between 200 and 400nm, whilst Low Pressure UV lamps have a much reduced output to the extent that they are frequently referred to as monochromatic.
Can a high pressure sodium lamp be dimmed and what are the effects?
Sodium lamps can be dimmed but we shall have to look at the effect of low voltage on lamps
Is argon gas a part of a high pressure sodium lamp?
From Wikipedia, high pressure sodium lamps use xenon, whilst low pressure ones use neon with a small amount of argon. See entry for 'sodium vapor lamps'
What is the difference between high and low pressure mercury lamps?
how are low pressure mercury lights made and how do they operate?
What are the applications of sodium vapour lamp?
Low-pressure sodium lamps : outdoor lighting
