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.
Halogen bulbs produce a bright white light. They become much, much hotter than other types of bulbs and should not be used near combustible materials or touched during or shortly after use. Fluorescent: These tube-shaped lights are often used as overhead lighting for large areas such as retail stores or home basements.
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.