What is the lamp of the lamp lamp?
The metal material in the bulb is the conductor, and the glass shell, the plastic part of the lamp cap is the insulator. Filament is made of metal tungsten with high resistivity and high melting point.
Incandescent bulbs are made based on the thermal effects of current. After the lamp is connected to the rated voltage, the current is heated to the incandescent state (2000C or more) through the filament, and thus the light is glowing. When incandescent work, the electrical energy is converted into internal energy and light energy.
In addition, tungsten can produce sublimation and condensate phenomenon. 60 watts above the bulb filled with nitrogen, argon and other gases, can hinder the sublimation at high temperatures.
Tungsten is a metal element, easy to oxidize, and the higher the temperature, the faster oxidation, in order to prevent oxidation of tungsten at high temperatures, bulbs are pumped into a vacuum.
Incandescent bulbs mainly by filament, glass shell, lamp and other parts of the composition
