The problem of the ceiling lamp can be connected directly to the plug
The tungsten halogen lamp gas incandescent lamp fill gas containing part of halogen or halide called tungsten halogen lamp.
Halogen tungsten lamps for large lighting locations, 220V voltage. That piece of metal is the wire that connects the wires in the tube.
In ordinary incandescent lamps, the high temperature of the filament causes the evaporation of tungsten. The evaporated tungsten precipitates on the glass bulb, resulting in the blackening of the bulb
