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2. Stanchion - Wikipedia

   en.wikipedia.org/wiki/Stanchion

   In event management a stanchion is an upright bar or post that includes retractable belts, velvet ropes, or plastic chains, sometimes in conjunction with wall-mounted barrier devices, barricades, and printed signage [3] and often used for crowd control and engineering people flow and construction site safety.

3. Recessed light - Wikipedia

   en.wikipedia.org/wiki/Recessed_light

   When installed it appears to have light shining from a hole in the ceiling, concentrating the light in a downward direction as a broad floodlight or narrow spotlight. Different types of recessed lighting in a warehouse "Pot light" or "canister light" implies the hole is circular and the lighting fixture is cylindrical, like a pot or canister.

4. Leigh Light - Wikipedia

   en.wikipedia.org/wiki/Leigh_Light

   The Leigh Light (L/L) was a British World War II era anti-submarine device used in the Battle of the Atlantic. It was a powerful (22 million candelas ) carbon arc searchlight of 24 inches (610 mm) diameter fitted to a number of the British Royal Air Force 's Coastal Command patrol bombers to help them spot surfaced German U-boats at night.

5. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

   www.aol.com

   AOL latest headlines, entertainment, sports, articles for business, health and world news.

6. Stage lighting accessories - Wikipedia

   en.wikipedia.org/wiki/Stage_lighting_accessories

   A color scroller, color changer, or "scroller" is a lighting accessory used to change color gels on stage lighting instruments without the need of a person to be in the vicinity of the light. [5] It is attached in the gel frame holder on the outside of a lighting instrument, immediately in front of lens assembly.

7. Light tube - Wikipedia

   en.wikipedia.org/wiki/Light_tube

   The 3M company developed a system based on optical lighting film [36] and developed the 3M light pipe, [37] which is a light guide designed to distribute light uniformly over its length, with a thin film incorporating microscopic prisms, [26] which has been marketed in connection with artificial light sources, e.g. sulfur lamps.