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
No. It is believed that they illuminated their long tunnels with mirrors (or a series of them), or used flammable torches when appropriate.
it is used as the backing reflector for the bulb. because it is concave, the light that hits it is focused into a beam of light.
spectroscope
Before the light bulb was invented in the late 1800s by Thomas Edison, people used candles, fire, oil lamps, or gas lamps or lights to create light while it was dark.
He still used tungesten
where was the first light bulb used
The first electric light bulb was made in 1880
no
Thomas Edison invented the first light bulb that was available for commercial use in 1879. The light bulb was first used in Menlo Park.
The first light bulb was invented around the 1850's or so when Benjamin Franklin discovered how electricity worked. His work was continued with light bulbs.
he used many different threads, he made the first light bulb with horse's tail hair.
yes argon is used for light bulb and it is not reactive
The gas in a light bulb is Argon
Light
If iron is used, there will be no light emitted from the light bulb as iron is opaque.
The U.S., Canada, Germany, France, and the U.K.