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.
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.