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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Edison can claim is the 'development' of a commercially useful light bulb using a carbon filament - though this was superseded by the tungsten filament not long after.
What else can I help you with?
What is the element used in incandescent lamps?
The filament is usually made from wolfram (W) and the filling gas is argon.
Is zircon used in incandescent lamps?
Zirconium is not used in incandescent lamps.
Which material is used for for filament in tungsten lamp?
i believe it is cadnium.
Which element is used in the filaments in incandescent lamps?
Tungsten is commonly used in the filaments of incandescent lamps because it has a high melting point and does not easily evaporate at high temperatures, making it suitable for prolonged use as a source of light.
How are neon lamps different from filament lamps?
filament lamps have a wire with high resistance, meaning that electricity doesn't pass through it well. As the current passes through the filament the wire gets hot and glows, giving off light and heat. Since the wire is in a vacuum sealed bulb there is no oxygen so the filament doesn't burn up. neon is a gas that "fluoresces" (gives off light) when an electric charge is passed through it. a neon light has a tube filled with neon and in either end is an anode. the transformer and capacitor build up a charge of electricity that zaps from one end to the other and as it passes through the gas, about 60 times per second, it causes the gas to emit light, but not much heat.
Difference between tungsten lamps and carbon lamps?
tungsten lamp has got inert gas argonsometimes iodine is added to improve intensity carbon filament produces less light than tungsten lamp but it radiates much less energy in the form of heat waves
What is lamp types?
There are two types of lamps the tungsten halogen lamps and incandescent lamps. Tungsten Halogen Lamps are similar to incandescent lamps and produce light in the same manner from a tungsten filament; however the bulb contains a halogen gas (bromine or iodine) which is active in controlling tungsten evaporation, whereas the incandescent lamp suppresses tungsten evaporation.
What element was used in incandescent lamps?
Incandescent light bulbs use a tungsten filament as the element that emits light when heated by an electric current.
What is the element used in incandescent lamps?
The filament is usually made from wolfram (W) and the filling gas is argon.
Why are V-i characterstics different for tungsten and carbon lamp?
The V-I characteristics are different for tungsten and carbon lamps because of their different electrical resistances and thermal properties. Tungsten lamps have a higher resistance and operate at higher temperatures, resulting in a steeper voltage-current relationship. Carbon lamps have lower resistance and operate at lower temperatures, leading to a shallower V-I curve.
What makes lamps light up?
Lamps light up when an electric current flows through a metal filament, typically made of tungsten. The filament heats up due to the resistance of the material, causing it to emit light in the visible spectrum.
Is zircon used in incandescent lamps?
Zirconium is not used in incandescent lamps.
What elements are used in light bulbs?
Any noble gas except helium, or beryllium used in WWII is now dangerous or tungsten, copper, zinc, nickel, fluorine, mercury, titanium, and carbon Tungsten Filament is used in Incandescent Lamps and Fluorescent Lamps Tungsten and Argon are used in incandescent light bulbs. Tungsten (chemical symbol 'W', 74)
How much mercury is in a incandesent heat lamp?
Incandescent heat lamps do not contain mercury. They use a tungsten filament that is heated to produce light and heat. Mercury is typically found in fluorescent and HID lamps, not incandescent ones.
How do tungsten-halogen bulbs generate light?
Inside a tungsten-halogen bulb, electrons flow through a tungsten filament. The filament heats up and emits light.
Which material is used for for filament in tungsten lamp?
i believe it is cadnium.
Light bulb filament?
What is Tungsten
