钠光灯是物理实验室常用的单色光源,但钠光灯管常因放电针与灯丝被金属钠短接,以致不能启动发光而成为废管。对这样的废管,用下述方法修复是很成功的。见图示。把废钠光灯管接到电路中,高压火花发生器的频率选择开关选在50Hz上。高压输出的一根引线g_1接到A Sodium light is commonly used in physical laboratories monochromatic light source, but sodium light tube often discharge needle and the filament is shorted by metal sodium, which can not start emitting light and become waste pipe. For such a waste pipe, the following method is very successful. See illustration. The waste sodium light tube connected to the circuit, high-voltage spark generator frequency selector switch selected at 50Hz. A high-voltage output leads g_1 received A