每当夜幕降临时,五光十色的霓虹灯就会成为一道美丽的风景线。大家知道霓虹灯的工作原理吗?其实,霓虹灯的构造和原理并不复杂。在两端封闭的玻璃管中,装置两个电极,将管里的空气抽出,再在两个电极之间通过上万伏的高压直流电,管内的稀薄空气就会发生电离,发生放电现象,从而发出光芒。如果把空气抽出后,将少量不同的惰性气体或水银蒸气充入管内,灯光就会出现不同的颜色:若充以氖气,放 Whenever the night falls, colorful neon lights will become a beautiful landscape. We all know the working principle of neon light? In fact, the structure and principle of neon lights is not complicated. In both ends of the closed glass tube, the device two electrodes, the tube of the air out, and then between the two electrodes through the high voltage DC of 10,000 volts, the thin tube of air ionization occurs, the occurrence of discharge, which Glow light. If the air is extracted, a small amount of different inert gas or mercury vapor filled tube, the light will appear in different colors: If filled with neon, put