A common laboratory source of light is provided by a mercury arc. 通常的实验室光源选用汞弧灯。
Metal halide lamps filled with the mixture of sodium iodide and rare earth iodides have been made and compared with the mercury arc lamp. 文中还制造了填充不同比例的碘化钠和稀土金属碘化物混合物的金属卤化物灯,将它们的发光特性与汞灯进行了比较。
UV light is produced by a Mercury arc lamp, 28 samples can be simultaneously irradiated. The times needed for irradiation are controlled automatically. 紫外光由一支汞弧灯产生,它可使28只样品同时受到辐射,所需照射的时间可以自动控制。