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2. Recessed light - Wikipedia

   en.wikipedia.org/wiki/Recessed_light

   Recessed light. The interior of a Target store. A recessed light or downlight (also pot light in Canadian English, sometimes can light (for canister light) in American English) is a light fixture that is installed into a hollow opening in a ceiling. When installed it appears to have light shining from a hole in the ceiling, concentrating the ...

3. Dropped ceiling - Wikipedia

   en.wikipedia.org/wiki/Dropped_ceiling

   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, drop out ceiling, or ceiling tiles and is a staple of modern construction and architecture in both residential and commercial applications.

4. Light switch - Wikipedia

   en.wikipedia.org/wiki/Light_switch

   In electrical wiring, a light switch is a switch most commonly used to operate electric lights, permanently connected equipment, or electrical outlets. Portable lamps such as table lamps may have a light switch mounted on the socket, base, or in-line with the cord.

5. Troffer - Wikipedia

   en.wikipedia.org/wiki/Troffer

   Troffer. A troffer is a rectangular light fixture that fits into a modular dropped ceiling grid (i.e. 2' by 2' or 2' by 4'). Troffer fixtures have typically been designed to accommodate standard fluorescent lamps ( T12, T8, or T5 ), but are now often designed with integral LED sources. Troffers are typically recessed sitting above the ceiling ...

6. Ceiling fan - Wikipedia

   en.wikipedia.org/wiki/Ceiling_fan

   A spinner fan with light kit. A modern three blade spinner fan from India. Direct-drive ceiling fans employ a motor with a stationary inner core with a shell, made of cast iron, cast aluminum, or stamped steel, that revolves around it (commonly called a "spinner" motor). The blades are attached directly to this shell.

7. Architectural lighting design - Wikipedia

   en.wikipedia.org/wiki/Architectural_lighting_design

   Architectural lighting design is a field of work or study that is concerned with the design of lighting systems within the built environment, both interior and exterior. It can include manipulation and design of both daylight and electric light or both, to serve human needs. [ 1][ 2] Lighting design is based in both science and the visual arts.