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What is the principle of operation of fluorescent?
The tube is filled with noble gas (i.e. argon, neon, helium). The tube also contains a small amount of mercury that when heated becomes mercury vapor. The inside of the tube is lined with phosphorescent material (mostly phosphorous). In the base of the bulb is an electronic ballast that boosts the line voltage up high enough to ionize the gas inside the bulb. As this happens the mercury also vaporizes inside the tube. The ionized gas and ionized mercury vapor emit ultraviolet light which strikes the phosphorous. The phosphorous, in turn, emits white light that lights up the room.
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.
How are cfls made?
CFLs (compact fluorescent lamps) are made using a glass tube coated with phosphor and filled with a small amount of mercury vapor. When an electric current flows through the tube, it excites the mercury vapor to produce ultraviolet light. The phosphor coating on the tube then converts the ultraviolet light into visible light.
What element is found in fluorescent light fixtures?
Mercury is the element found in fluorescent light fixtures. It is used in the form of mercury vapor, which produces ultraviolet light when electricity passes through it, causing the phosphor coating inside the tube to fluoresce and produce visible light.
How does tubelight glows?
A tubelight glows when an electrical current passes through mercury vapor inside the tube, causing it to emit ultraviolet light. This UV light interacts with the phosphor coating on the inside of the tube, producing visible light.
What is the principle of operation of fluorescent?
The tube is filled with noble gas (i.e. argon, neon, helium). The tube also contains a small amount of mercury that when heated becomes mercury vapor. The inside of the tube is lined with phosphorescent material (mostly phosphorous). In the base of the bulb is an electronic ballast that boosts the line voltage up high enough to ionize the gas inside the bulb. As this happens the mercury also vaporizes inside the tube. The ionized gas and ionized mercury vapor emit ultraviolet light which strikes the phosphorous. The phosphorous, in turn, emits white light that lights up the room.
How does a mercury vapor light work?
A mercury vapor light works by passing an electric current through mercury vapor inside a sealed tube. This process causes the mercury vapor to emit ultraviolet light, which then excites a phosphor coating on the inner surface of the tube to produce visible light.
Why is Mercury used in florescent lights?
A florescent tube is still a mercury vapour device and needs the mercury to vaporise to have the tube conduct to emit visible light.
How does electron allow a fluroscent tube to glow?
The electrons in the mercury arc current in the tube causes the mercury vapor to emit ultraviolet light. The inside surface of the tube is coated with a phosphor that glows with visible light when hit by ultraviolet light.
Why tube light glows white?
due to presence of Mercury
What process the mercury vapour produces light Inside a fluorescent tube?
When electricity passes through the tube, it excites the mercury vapour inside, causing it to emit ultraviolet (UV) light. The UV light then interacts with phosphor coating on the inside of the tube, causing it to fluoresce and produce visible light.
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.
Which gas in tube light?
Mixture of argon gas and Mercury gas.
What does a fluorescent light tube usaually contain?
mercury vapour at low pressure.
What element is in fluorescent light tubes?
Fluorescent light tubes contain mercury vapor as well as an inert gas, such as argon or krypton. When an electric current passes through the tube, it excites the mercury vapor, causing it to emit ultraviolet light that is then converted into visible light when it interacts with the phosphor coating inside the tube.
What element is used in fluorscent light with Argon?
Mercury is the element used in fluorescent lights with argon. When electricity is passed through the mercury vapor inside the light tube, it produces ultraviolet light that excites the phosphor coating on the inside of the tube, creating visible light.
Is fluorescent light produced by heat?
Fluorescent light is not produced by heat. It is produced when electricity passes through the mercury vapor in the fluorescent tube, causing the mercury atoms to emit ultraviolet light that then interacts with the phosphor coating inside the tube to produce visible light.
