The incandescent lamp uses a tungsten wire. The tungste […]
The incandescent lamp uses a tungsten wire. The tungsten wire has a large resistance. When it is energized, the light is radiated and the light is continuous. The spectrum is natural light, which is beneficial to vision protection, but it is relatively expensive.
The energy-saving lamp emits fluorescence after the gas in the lamp is energized. The heat is small, the emitted light has a frequency, and the spectrum is a single light, which is harmful to the eyes. The frequency of the eye-protection lamp is generally 200 Hz, which is not harmful to the human eye. More energy efficient.