CFL’s are commonly long, cylinder shaped and usually coated in white. They are considered energy-saving and are meant to substitute the older incandescent light bulbs that existed prior to these; ...

Since the development of incandescent light bulbs in the late 1800s, various methods of producing white light more efficiently have been investigated. Of these, white-light sources based on light ...

When the mercury is excited by electricity, it emits ultraviolet (UV) light, which causes the phosphor to emit visible light. Fluorescent lamps have been widely used in commercial buildings for ...

explain what CFL bulbs are and how they differ from incandescents (the classic glass globes with a filament inside) and light-emitting diodes (LED), which are poised to put both CFLs and ...