... are particularly good, and through the ultraviolet, infrared. Quartz glass is a good acid-proof materials, in ... Do high-pressure mercury lamp, a long arc xenon lamp, tungsten, thallium iodide lamp, infrared lamps and germicidal lights. ... properties, making ultrasonic delay line radar, infrared tracking direction finding, infrared photography, communication, spectrograph, spectrophotometer prism, lens ...