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Why do fluorescent light glow when turned off?
Fluorescent lights use electric current to excite mercury atoms, which emit UV light. The tube part of the light is covered in phosphorescent material, which is excited by the UV light the mercury produces, and emits visible light. The reason they glow is because it takes a while for an excited mercury atom to emit the UV light, and it takes even longer for the excited phosphorescent molecules to emit all of their excess energy and return to their normal energy levels, also called the ground state. The path of the energy is Electricity -> UV light-> Visible light-> your eye
Are UV light and UV rays the same thing?
Yes, UV light and UV rays are the same thing, light emit "rays."
How do you get a UV light?
you go to a beauty shop and ask for a UV light
Element used in fluorescent lights?
The filament is usually made from wolfram (W) and the filling gas is argon.
Is mercury used in lights?
There are several types of lights using mercury:Mercury-vapor lamps use mercury to generate Ultraviolet light for tanning lamps. With a suitable phosphor the UV is converted to visible light. These lights are now baned and have been replaced with metal halide (e.g. sodium} lightsFluorescent lights, both the large tube types and new compact fluorescent bulbs, excite mercury vapour to generate UV and convert it to visible light with a phosphor coating. The new smaller bulbs use fraction of the mercury and no liquid mercuryBlue "neon" lights can use an argon mercury misture
Why do fluorescent light glow when turned off?
Fluorescent lights use electric current to excite mercury atoms, which emit UV light. The tube part of the light is covered in phosphorescent material, which is excited by the UV light the mercury produces, and emits visible light. The reason they glow is because it takes a while for an excited mercury atom to emit the UV light, and it takes even longer for the excited phosphorescent molecules to emit all of their excess energy and return to their normal energy levels, also called the ground state. The path of the energy is Electricity -> UV light-> Visible light-> your eye
How does the fluorescent light bulb work?
ionized mercury vapor emits UV light.phosphor coating on inside of tube absorbs UV light and emits visible light.visible leaves tube.
How does an ozone lamp work?
"Ozone lamps" are UV light sources that use quartz sleeves between the environment and the mercury plasma that produces the light, and does not have the titanium dioxide coating that absorbs short wave UV and makes lots of visible light (the usual fluorescent light bulb does this). Normal glass will absorb too much of the UV. Ozone in the tropopause is produced by 215nm (or more energetic) UV light, and mercury vapor lamps produce some light at a more energetic 185nm wavelength.
Is UV light the same as fluorescent light?
The UV light is different to that of fluorescent light. The UV originates from the sun. The latter one does not.No, it is not. UV is different.
How does the fluorescent lighting work?
ionized Mercury vapor emits UV light.phosphor coating on inside of tube absorbs UV light and emits visible light.visible leaves tube.
Are UV light and UV rays the same thing?
Yes, UV light and UV rays are the same thing, light emit "rays."
What is the difference between a UV light bulb and a black light?
A black light is a UV emitting bulb. There are other types of UV bulbs, but most have very specific uses, such as: bug lights, tanning bed lamps, drying lamps for lithographic applications and printing, and medical diagnosis. All lamps--incandescent, fluorescent, mercury vapor, tungsten, etc.-- emit some range of UV light, so could be considered UV lamps, but that is not their specific purpose, and the amounts or levels vary widely.
How do you get a UV light?
you go to a beauty shop and ask for a UV light
Why tube light glowing white colour?
Mercury is present inside the tube light.When we give supply to the tube light the mercury vapours excites and it produces uv radiation which then strikes the fluorescent material and produces light. Therefore it is called fluorescent light.
Element used in fluorescent lights?
The filament is usually made from wolfram (W) and the filling gas is argon.
Does UV light kill ringworm?
yes the UV light kills the fungus
How is uv light different from light?
It is different because the UV light is brighter then a normal light and it is like a laser. UV light is different to normal light because it is invisible and the wave length is smaller.
