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What do the wires in the middle of a light bulb do?
The filament is made of tungten and these 'wires' (filament) conduct electricity.
Who invented the tungsten filament lamps?
Thomas Edison It was actually Irving Langmuir (of General Electric), also an American. Edison's incandescent lamp used a carbon filament, as did that of his contemporary, England's Joseph Swan who got there before Edison (who invented a longer lasting carbon filament). William Coolidge improve on Langmuir's filament by making it longer (the familiar twisted shape) and brighter. Humphrey Davy had invented a platinum filament way back in 1809 that worked, but was too expensive for commercial use. Those that followed him failed to cotton on to the use of a metallic filament and went for carbon instead. What Tomas Edison can claim is the 'development' of a commercially useful light bulb using a carbon filament - though this was superseded by the tungsten filament not long after.
Who discovered the light bulb and when?
Humphrey Davy created the electric arc in 1800 (no bulb). Joseph Wilson Swan created the carbon filament which produced light in 1878. Charles Francis Brush used Carbon Arc lighting to illuminate a public square in 1877. In 1879 Thomas Alva Edison put it all together in an oxygen free bulb that was "almost" perfect. Lewis Howard Latimer who had been on Edison's team invented an improved carbon filament in 1881 and a unique manufacturing process that produced the filament in 1882. In 1903, Willis R. Whitney solved the problem of darkening the inside of the bulb with a coating of the filament. The light bulb as we know it involved exchanging the the carbon filament for one made of tungsten invented by William David Coolidge in 1910 and the incadescent bulb lit up the world.
What supports the anther?
The Filament
What are the filsments of DNA and protein?
In essence, a protein filament is a long strand (aka filament) that's made of protein (hence, "protein filament"). So they are composed of smaller, protein subunits, which are single protein molecules.
How was the carbon filament a help to people?
It made the light bulb have light.
What elements are in light bulbs as a filament?
Light bulb filaments are usually made of tungsten, which has a very high melting point. Occasionally carbon is used as a filament.
Did Lewis Howard Latimer light bulb with a carbon filament?
yes he improved the light bulb that Edison invented using the carbon filament.
Sentence with filament?
Filament was made from plastic. The filament was very stable and smooth.
What are the bulb of light bulbs made of?
The actual protective cover is either made of plastic or glass. The part that is screwed into a socket is aluminum, and the filament wire is made of carbon.
Why are V-i characterstics different for tungsten and carbon lamp?
As carbon filament bulbs have a negative temperature coefficient and tungsten filament light bulbs have a positive temperature coefficient.
Who invented the carbon filament for the electric light?
James watt
What is metal with which the filament is made?
Assuming you're talking about light bulbs... the filament is made from Tungsten.
What is used to make globe filaments?
The first successful light bulb filaments were made of carbon (from carbonized paper or bamboo). In 1902 the Siemens company developed a tantalum lamp filament. From 1898 to around 1905 osmium was also used as a lamp filament. In 1906 the tungsten filament was introduced
Who invented the carbon filament a part of the light bulb?
Joseph Swan
What did early light bulbs have inside them?
the first one was carbon filament
Do carbon filament light bulbs save more energy?
Yes
