What material is the filament of an incandescent lamp made of and what is its melting point?
| June 2, 2021 | education
What material is the filament of an incandescent lamp made of and what is its melting point? Why should the filament coil be made of a refractory material? Why should the coil in an incandescent lamp be heated to high temperatures? What gas is used to fill the lamp bulb? What happens if there is no gas in the bulb? Who invented the electric incandescent lamp? Why are these lamps called low luminous efficacy lamps?
Tungsten; 3387 C
It heats up to 3000 degrees during use
Only then does she start to burn
nitrogen or inert gases
Tungsten filament breaks down
Lodygin A.N.
Since most of the energy. goes to heating the lamp, not lighting
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