Best Quality Integrated Fire Rated Embedded Surface LED Downlight 35W Energy Saving Bulbs

The biggest problem with light bulbs is the sublimation of the filament. Due to the slight difference in resistance on the tungsten wire, the temperature varies. In areas with higher resistance, the temperature rises higher and the tungsten wire sublimates faster, resulting in a cycle where the tungsten wire becomes thinner and the resistance further increases; Finally, it caused the tungsten wire to burn out. Later, it was discovered that replacing vacuum with inert gas could slow down the sublimation of tungsten wire. Today, most electric light bulbs are filled with nitrogen, argon, or krypton gas.

A light bulb is a type of lamp that uses a resistor to heat a thin wire (usually tungsten wire in modern times) to incandescence through electricity, in order to emit light. The periphery of the electric bulb is made of glass, which keeps the filament under a vacuum or low-pressure inert gas to prevent oxidation of the filament at high temperatures.