What is the change in the tungsten wire inside the incandescent lamp?
Because the whole process did not see the liquid tungsten metal
The high temperature of the tungsten molecules hit the cold bulb wall will immediately condensate into solid tungsten
Tungsten wire heat did not see the liquid tungsten but tungsten directly sublimation
So the principle of light filament light is converted into heat energy
So there are only two kinds of changes in sublimation and condensate
