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.
Light fixture - Fixture types. 1  Light fixtures are classified by how the fixture is installed, the light function or lamp type. 2  Table lamp fixtures, standard lamp fixtures, and office task light luminaires. 3  Floor Lamp Torch lamp or torchiÃ¨res are floor lamps with an upward facing shade. 4  Bouillotte lamp: see Bouillotte.