Attention should be paid to the light bulb not being affected by external interference, and it should be beautiful, practical, sturdy, and safe.

1. The connection of wires should be standardized and reasonable.

2. The switch should control the live wire.

3. The screw sleeve of the screw socket can only be connected to the neutral line.

4. The two wires in the lamp holder should be insulated from each other and secured with safety buckles.

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.