Available in many lengths and several diameters, the tube is lined with a fluorescent phosphor. When the mercury is excited by electricity, it emits ultraviolet (UV) light, which causes the ...

Below, McGowan and Dara Greaney, CEO of LEDLightExpert.com, explain what CFL bulbs are and how they differ from incandescents (the classic glass globes with a filament inside) and light-emitting ...

Called Geissler tubes, they became the basis of many lighting technologies including fluorescent lights. 1877 — 1885: Competition for the incandescent light bulb heats up Inventors all across ...

They are considered energy-saving and are meant to substitute the older incandescent light bulbs that existed prior to these ... of UV radiation and try to use light shields and lamp shades whenever ...