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The first thing you have to look at for this is the equation for resistance in an object which is R = rho(L/A) where rho is a constant and L is length and A is cross sectional area. Given this equation it should seem that a filament has a high resistance and should not be bright, but the reason it is bright is because it is so small the electrons are packed together so closely that when you send a current through the filament the electrons hit each other at such a high rate that the energy transferred from these impacts is emitted in the form of bright light.
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What are carbon filaments for light bulbs?
Modern light bulb filaments are usually Tungsten not Carbon. However early bulbs used things like silk coated with Carbon. Filament means thin thread. The bulbs are filled with inert gas like Argon to stop the filament from burning up with oxygen. Arc lamps use Carbon rods though.
What is the name thin wire inside a light bulb?
a filament
How do light-bulbs work?
An electric current passes through a thin filament, heating it until it produces light. The enclosing glass bulb prevents the oxygen in air from reaching the hot filament, which otherwise would be destroyed rapidly by oxidation.
I am trying to make a simple balloon detonator using an rf remote but the instruction states i need small gauge filament what is this?
A small gauge filament is a thin wire with a high melting point, just like the filament in light bulbs. That filament will heat up when electricity will pass through it. If you have enough battery power, I would suggest using a piece if pencil lead.
What causes a light bulb to turn black when they burn out?
As an incandescent light bulb is used, tungsten slowly evaporates from the filament causing it to get thinner. When it gets too thin it can no longer carry the current and part of it melts causing the bulb to blow out.
Why is the filament used in bulbs thin and long?
because the filament should be heated so the resistance should be high .so it uses a long and thin wire
How does electricity work in light bulbs?
The wiring inside the light bulb is very thin (the filament) and glows when heated. The current through the thin wire heats up the filament wire so that it will glow. See the related link 'How Light Bulbs Work'.
Is filament an adjective?
No, it is not. Filament is a noun meaning 1) a thin stalk in plant reproductive organs, or 2) a thin wire as is found in incandescent light bulbs.
What are carbon filaments for light bulbs?
Modern light bulb filaments are usually Tungsten not Carbon. However early bulbs used things like silk coated with Carbon. Filament means thin thread. The bulbs are filled with inert gas like Argon to stop the filament from burning up with oxygen. Arc lamps use Carbon rods though.
What causes light bulbs to go smokey?
This is actually really cool. The tungsten filament evaporates and condenses on the bulb wall, leaving a thin tungsten film.
What is light bulb filament?
It is the extremely thin wire inside the bulb. It is so thin that when the electricity goes through produce light, when that filament breaks the bulb is not good.
What is the name thin wire inside a light bulb?
a filament
In a light bulb what is energy transformed in to?
In typical light bulbs, or incandescent bulbs, the resistance to the current directed through the filament causes the filament to heat up, thus radiating light. The glass bulb around the filament is vacuum sealed to remove oxygen, which would rapidly oxidize and destroy the super heated, ultra thin filament. there are variations of this technology in which the bulb is not a vacuum, but is instead filled with different gasses surrounding the filament, which allows the filament to burn even hotter, creating more light. fluorescent bulbs work by creating a reaction between mercury vapor and phosphors. electric current excites the mercury atoms, which then release ultraviolet light. The ultraviolet light causes the phosphors to fluoresce, which creates light in our visible spectrum.
What is the thin coil of wire inside a light bulb called?
If you are talking about an incandescent light bulb then its called a filament. It is thin so that it has a high level of resistance. Current going through the filament causes it to heat up and give off EM radiation in the spectrum of visible light.
What is inside of a light bulb and how does it work?
In an incandescent light bulb, a positive and negative (or neutral wire) are connected by a tungsten filament in a vacuum. An electrical current passes through the thin filament, heating it very hot and causing it to glow. Eventually, after repeated use, the tungsten filament gets quite thin and eventually breaks, which is what happens when the light bulb burns out! Also, if the filament is exposed to oxygen while the current is flowing, the filament will break melts.TIP: DON'T USE INCANDESCENT LIGHT BULBS... SWITCH TO ENERGY-SAVING COMPACT FLUORESCENTS!!!!Actually most incandescent light bulbs have argon and nitrogen inside them. Early lightbulbs were vacuums.
Why bulbs have vacuum inside?
Because if the thin filament wire was heated in regular air it would burn up.
What name is the thin wire inside a light bulb called?
Filament
