A light source consisting of a long glass tube containing mercury in a partial vacuum. Available in many lengths and several diameters, the tube is lined with a fluorescent phosphor. When the ...

Without it, the current would increase as it passed through, ruining the lamp (bulb). Fluorescent ballasts come in two broad types: magnetic and electronic. Magnetic ballasts are increasingly ...

The countries previously agreed to prohibit the manufacture, import and export of compact and other types of fluorescent lamps by 2025. Mercury, which is liquid at room temperature, was used in a ...

In addition to sunlight, ultraviolet rays are also given off by several different forms of indoor lighting, including compact fluorescent lamps (CFL’s). CFL’s are commonly long, cylinder shaped and ...