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  2. Fluorescent-lamp formats - Wikipedia

    en.wikipedia.org/wiki/Fluorescent-lamp_formats

    Cross section of a typical fluorescent lamp with and without a reflector. Some lamps have an internal opaque reflector. Coverage of the reflector ranges from 120° to 310° of the lamp's circumference. Reflector lamps are used when light is only desired to be emitted in a single direction, or when an application requires the maximum amount of ...

  3. Dropped ceiling - Wikipedia

    en.wikipedia.org/wiki/Dropped_ceiling

    Dropped ceiling featuring ceiling tiles, lights, air diffusers, smoke detector, and more Dropped ceiling with ceiling tile light fixture. A dropped ceiling is a secondary ceiling, hung below the main (structural) ceiling. It may also be referred to as a drop ceiling, T-bar ceiling, false ceiling, suspended ceiling, grid ceiling, drop in ceiling ...

  4. Cove lighting - Wikipedia

    en.wikipedia.org/wiki/Cove_lighting

    Traditionally, cove lighting was installed by using T5 fluorescent tubes. T5 luminaires are an energy-efficient alternative to larger luminaires (such as T8 lamps) because they save on materials. [2] Lighting specialists recommend installing cove lighting at least 18 inches (46 cm) from the ceiling and 6 feet 8 inches (2.03 m) from the floor.

  5. Fluorescent lamp - Wikipedia

    en.wikipedia.org/wiki/Fluorescent_lamp

    A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, to produce ultraviolet and make a phosphor coating in the lamp glow.

  6. Neon lighting - Wikipedia

    en.wikipedia.org/wiki/Neon_lighting

    Neon lighting is closely related to fluorescent lighting, which developed about 25 years after neon tube lighting. [12] In fluorescent lights, the light emitted by rarefied gases within a tube is used exclusively to excite fluorescent materials that coat the tube, which then shine with their own colors that become the tube's visible, usually ...

  7. Framing (construction) - Wikipedia

    en.wikipedia.org/wiki/Framing_(construction)

    Wall framing in house construction includes the vertical and horizontal members of exterior walls and interior partitions, both of bearing walls and non-bearing walls. . These stick members, referred to as studs, wall plates and lintels (sometimes called headers), serve as a nailing base for all covering material and support the upper floor platforms, which provide the lateral strength along a

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