A preamble is usually used for formal documents; you wouldn't include one in a text to your best friend. noun-A preliminary statement, especially the introduction to a formal document that serves to explain its purpose. noun-An introductory occurrence or fact; a preliminary.
Check out our wide range of long-lasting LED light bulbs, energy-saving CFL light bulbs, and other options like incandescent, fluorescent bulbs and halogen bulbs. We also carry light bulbs from best-in-class brands like Philips, GE, EcoSmart and more.
LED light bulbs are a more environmentally-friendly alternative to incandescent bulbs. LED bulbs use a semiconductor device that emits visible light when an electric current passes through it. That property is known as elecroluminescence. Compact fluorescent s, the most common alternative to incandescent bulbs, use electricity to excite mercury gas until it emits ultraviolet (UV) light.