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.
Types of Lighting. - 1 Incandescents. - 2 Fluorescent Tubes. - 3 Compact Fluorescents (CFL) - 4 HID (High-Intensity Discharge) Lighting. - 5 Metal Halide Lighting. - 6 HPS (High Pressure Sodium) Lighting. - 7 LED (Light Emitting Diode) Lighting. - 8 Other Specialist Lights.