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.
Screw-in types can be used in place of incandescents in standard lamp sockets. Available in a wide spectrum of colors. Warm white tones best duplicate the color of incandescents. Today's fluorescent bulbs come in a wide selection of sizes and can produce warm tones of light similar to those of incandescents.
People looking for bulbs and dimmers should keep in mind that incandescent and halogen bulbs are easier to use because any dimmer switch is compatible. The initial costs for incandescent and halogen bulbs are lower, but with regular light bulbs the energy savings is not as good as fluorescent and LED light bulbs.onsumers have a choice of incandescent, halogen, fluorescent, and LED light bulbs. The incandescent and halogen bulbs are easy to control with a dimmer switch, while the florescent and LED bulbs save more energy, but they are more difficult to deploy with a dimmer switch and are more expensive.