Luminous principle of LED lamp
The energy-saving effect of LED lamps is generally better than that of fluorescent energy-saving lamps, but after long-term work, due to its own quality design and use environment, it will lead to light decay.
Luminous principle of fluorescent energy-saving lamp
Fluorescent energy-saving lamps mainly heat filaments through ballasts. When the temperature is around 1 160K, the filament begins to emit electrons (some electron powder is coated on the filament), and the electrons collide with argon atoms to produce inelastic collisions. After argon atoms collide, they gain energy and then collide with mercury atoms. After absorbing energy, mercury atoms undergo jump ionization and emit 253.7nm ultraviolet rays, which excites the phosphor to emit light.
Luminous principle of tungsten filament incandescent lamp
The luminous body of tungsten filament incandescent lamp is a filament drawn with metal tungsten, which is characterized by high melting point and can remain solid even at high temperature. It is precisely because the hot filament produces light radiation that the electric lamp emits bright light. At high temperature, some tungsten atoms will evaporate into gas and deposit on the glass surface of the bulb, which will slowly turn black.