Never stop learning : Tungsten and resistance
Never stop learning series : Tungsten and resistance
In this video did get me. First it look like a magic to me, then I recall that is cause by the Resistance. How about you guys?
https://www.youtube.com/watch?v=_1tCRnl1Nfo
Light bulb mystery- electric resistance // Homemade Science with Bruce Yeany
Light bulb filament
https://www.youtube.com/watch?v=DIGqBb3iZPo
The name "tungsten" (from the Swedish tung sten, "heavy stone")
For a 60-watt 120-volt lamp, the uncoiled length of the tungsten filament is usually 22.8 inches (580*mm), and the filament diameter is 0.0018 inches (0.046*mm).
The cold resistance of tungsten-filament lamps is about 1/15 the hot-filament resistance when the lamp is operating
Carbon filament bulbs have the opposite characteristic. The resistance of a carbon filament is higher when it is cold than when it is operating.
No1 producer of Tungsten is China.
Tungsten is the metal with the highest melting point, 3,695*K (6,191*°F)
In this video did get me. First it look like a magic to me, then I recall that is cause by the Resistance. How about you guys?
https://www.youtube.com/watch?v=_1tCRnl1Nfo
Light bulb mystery- electric resistance // Homemade Science with Bruce Yeany
Light bulb filament
https://www.youtube.com/watch?v=DIGqBb3iZPo
The name "tungsten" (from the Swedish tung sten, "heavy stone")
For a 60-watt 120-volt lamp, the uncoiled length of the tungsten filament is usually 22.8 inches (580*mm), and the filament diameter is 0.0018 inches (0.046*mm).
The cold resistance of tungsten-filament lamps is about 1/15 the hot-filament resistance when the lamp is operating
Carbon filament bulbs have the opposite characteristic. The resistance of a carbon filament is higher when it is cold than when it is operating.
No1 producer of Tungsten is China.
Tungsten is the metal with the highest melting point, 3,695*K (6,191*°F)