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Wiki User
∙ 12y agoAssuming you are speaking of a fluorescent tube.
The tube has heated electrodes at each end, these electrodes emit electrons which travel down the tube to the opposite end.
Along the way, the electrons bump into the low pressure mercury vapor in the tube and emit a bright bluish light, much of it in the UV. The intense light hits phosphors on the inside of the tube, which convert the blue/uv light from the mercury into white light for illumination.
In conventional fixtures an inductive coil of wire is used to both start the flow of electrons and control the current. This prevents the tube from overheating and failing. In CFL's, an electronic circuit performs the same task.
Wiki User
∙ 12y agoThe yellow light and blue light makes the green light .
Wiki User
∙ 11y agodue to presence of mercury
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What happened whe the glowing splint was inserted in then test tube containing hydrogen peroxide and manganese dioxide?
the glowing splint would ignite.
Why do you use a discharge tube to perform the experiment instead a of light bulb?
It depends on the experiment, of course, but a discharge tube contains ionized atoms, while an incandescent simply has glowing metal. The former is, for most experiments, a lot more interesting.
When zinc carbonate is heated on a dry test tube what observation is seen?
when zinc carbonate is heated it' white colour changes to yellow . And when it is cooled it again changes to it original colour
What will happen when you thrust a glowing bamboo stick inside the test tube with oxygen?
The glowing splint will relight if you place it in a flask with oxygen. Scientists do this as a test for oxygen so if it relights, then that means the flask contains oxygen.
What happens when you thrust a glowing bamboo stick inside the test tube?
If only oxygen is in the test tube, it may burst into flame.
Does a tube light emit multiple wave length?
The answer completely depends on what's glowing inside the tube and producing the light.
Why won't the center of a fluorescent tube light if the ends are still glowing?
you need to replace a ballast
What are science fair projects the can be done in a day?
go to you-tube and search up glowing light you could do something with that.
What is the difference between the normal light globe and a fluorescent tube?
"Normal" light globes use a glowing filament, heated by the current. Flourescent tubes ignite a gas within a tube, using an arc.
Why light emitted by a bulb is yellowish in colour but from a fluroscent tube is white?
You are seeing the spectrum of the metal used in a light bulb. In a florescent tube you are seeing ultraviolet light being transformed into visible light by the internal phosphor coating.
What are neon signs made out of?
They are made out of glass as a the tube and there is no active filament what actually creates the glowing is there is a gas inside the tube and the electricity that runs to it creates the gas to ionize which creates light.
What do t5 slimming pills look like?
They are white or red in colour and are tube shaped.
Why tube light glows white?
due to presence of Mercury
How is light generated through a spectrim?
If / when light is generated by heating, a continuous spectrum is generated. A small portion of this electromagnetic spectrum may be detected by humans.When light is generated by creating a plasma, then only the spectral lines particular to that substance are generated.You can perform this simple experiment yourself. If you hold a CD at an angle towards an incandescent lamp, you'll see a complete colour spectrum - there will be no breaks between the colours.If you repeat the experiment with a fluorescent (or CFL) lamp, you'll see several separate colours, with clearly no continuous grade of colour between them.This is because the fluorescent tube actually generates a plasma inside it, and the UV light from the plasma will excite the phosphors (the white coating in the tube) on the tube. It needs several phosphors to approximate the colour of white light, but it is only an approximation.
What happened whe the glowing splint was inserted in then test tube containing hydrogen peroxide and manganese dioxide?
the glowing splint would ignite.
What is the test for oxygen and the result if oxygen is present?
If a test tube is filled with oxygen when you put a glowing splint into it, the splint will relight. (To make the splint glow you have to light it then blow it out and put it into the test tube immediately.) Hope this helps. XD XD
Why do you use a discharge tube to perform the experiment instead a of light bulb?
It depends on the experiment, of course, but a discharge tube contains ionized atoms, while an incandescent simply has glowing metal. The former is, for most experiments, a lot more interesting.
