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In order to know why fluorescent bulbs turn black at the end, you need to understand how they work. Basically, when you turn on the lighht switch, the ballast sends a spark through the Mercury-vapor-filled tube or bulb, depending on design. When it does this, it creates light by activating phosphors that coat the inside of the tube.
Well each time the ballast fires, it creates emissions. These emissins materials then settle on the surface inside the glass. After awhile this material piles up. When it does this, the tube end turns completely black. Not only does the tube end turn black, but the accumulated materials pile up so high that it blocks the electrons that flow into the mercury. When this happens, you will notice the bulb or tube flicker heavily and then burn out.
What else can I help you with?
What is fluorescent lamb?
Perhaps you are asking about fluorescent lamp. This is an electrical device that uses a fluorescent bulb to give off light. The bulb is a recent invention designed to give energy savings in the residential area. The fluorescent bulb used to be used exclusively in industrial applications, but the new bulb is small and compact enough to be used in a home lamp.
Which kind a light bulb uses the least amount of energy a fluorescent lamp a halogen lamp a incandescent lamp or a heating lamp?
Fluorescent lights use far less energy than any of the others listed.
When did thomas Edison invent the fluorecent bulb lamps?
Thomas Edison did not invent fluorescent bulb lamps; instead, he is best known for developing the practical incandescent light bulb. The first commercial fluorescent lamps were developed in the 1930s by General Electric and others, building on earlier experiments with gas-discharge lamps. Edison's contributions primarily focused on electrical power generation and incandescent lighting.
What is another name for a bulb in a circuite?
Another name for a bulb in a circuit is a "lamp." In electrical terms, it refers to a device that produces light when an electric current passes through it. Lamps can come in various types, including incandescent, LED, and fluorescent, each functioning to convert electrical energy into light.
Which wire used for ordinary light bulb?
In most home wiring circuits, the black wire is used to power a light bulb. The other wire is white and is called the neutral conductor.
Who invented fluorescent light bulb?
EEdmund Germer (90% sure) made the first fluorescent light bulb
Can you put a black light bulb in any fluorescent fixture?
Yes a black lamp tube will work in a fluorescent fixture. Guess you don't remember the early 70's.
Why does a light bulb turn black?
A light bulb turns black when the filament inside it gets too hot and starts to burn, creating a layer of soot on the inside of the bulb.
When was the fluorescent light bulb invented?
1857
What type of light is 20w energy saving bulb Halogen Indandecent neon fluorescent etc please help?
The energy saving light-bulbs are usually fluorescent. Neon is a type of fluorescent light bulb.
How much is a fluorescent bulb?
fluorescent light bulbs are usually from 9$-15$.
What year was the fluorescent light bulb invented?
The flourescent light bulb was invented in 1827.
what is the long thin light bulb called?
The long thin light bulb is called a fluorescent tube or a fluorescent light bulb. It is commonly used in commercial buildings, offices, and schools for general lighting purposes.
What is the fluid in a fluorescent light bulb?
In a fluorescent light bulb there is usually a drop of mercury. That mercury vaporizes as the bulb warms up and it becomes gaseous, enhancing the electron interaction through the bulb, making it brighter.
What is the difference between a black light bulb and white light bulb?
A black light bulb emits ultraviolet (UV) light, which is typically invisible to the human eye but can cause fluorescent materials to glow. A white light bulb emits visible light across a spectrum of colors.
What is the swirly light bulb called?
The swirly light bulb is called a compact fluorescent lamp (CFL). It is a type of energy-efficient light bulb that produces light by using electricity to excite the gas inside the bulb to create illumination.
Which is hotter a fluorescent light tube or a light bulb?
By far the hottest of the two light sources is the light bulb.
