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2. LED lamp - Wikipedia

   en.wikipedia.org/wiki/LED_lamp

   A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...

3. Ellipsoidal reflector spotlight - Wikipedia

   en.wikipedia.org/.../Ellipsoidal_reflector_spotlight

   A Colortran ERS. An Ellipsoidal Reflector from a Leko Source Four ERS. Ellipsoidal reflector spot (abbreviated to ERS, or colloquially ellipsoidal or ellipse) is the name for a type of stage lighting instrument, named for the ellipsoidal reflector used to collect and direct the light through a barrel that contains a lens or lens train.

4. Spotlight (theatre lighting) - Wikipedia

   en.wikipedia.org/wiki/Spotlight_(theatre_lighting)

   Characteristics of a typical spotlight include: A strong light source, often a high-intensity discharge lamp with a high colour temperature. A lens which can be manually focused. A manual device to change the intensity of the beam, especially when an HID source which can not be electronically dimmed, is used.

5. Spotlight (Apple) - Wikipedia

   en.wikipedia.org/wiki/Spotlight_(Apple)

   Spotlight is a system-wide desktop search feature of Apple's macOS, iOS, iPadOS, and visionOS operating systems. Spotlight is a selection-based search system, which ...