CFL – Compact Fluorescent Lamp
A compact fluorescent lamp (CFL), also called compact fluorescent light, energy-saving light, and compact fluorescent tube, is a fluorescent lamp designed to replace an incandescent lamp; some types fit into light fixtures formerly used for incandescent lamps. The lamps use a tube which is curved or folded to fit into the space of an incandescent bulb, and a compact electronic ballast in the base of the lamp.
Here’s a quick introductory video we found on CFLs.
” In comparison, CFLs use 75% less energy and last 10x longer. Changing a bulb to CFL can save USD40 over the entire lifetime of the lightbulb ”