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2. Lighting control console - Wikipedia

   en.wikipedia.org/wiki/Lighting_control_console

   A lighting control console (also called a lightboard, lighting board, or lighting desk) is an electronic device used in theatrical lighting design to control multiple stage lights at once. They are used throughout the entertainment industry and are normally placed at the front of house (FOH) position or in a control booth .

3. Underglow - Wikipedia

   en.wikipedia.org/wiki/Underglow

   Underglow lights on racing cars. Underglow lights on an F/A-18 airplane. Green underglow lights on a scooter moped. In the car industry, underglow or ground effects lighting refers to neon or LED aftermarket car customization in which lights are attached to the underside of the chassis so that they illuminate the ground underneath the car.

4. LCD projector - Wikipedia

   en.wikipedia.org/wiki/LCD_projector

   The basic technique is to combine a high color-rendering index (CRI) high-intensity discharge lamp (HID lamp) and ballast with a condenser and collector Fresnel lens, a single color LCD removed from a common computer display or electronic device and a triplet lens. This design can also be used in low cost (around US$200) LCD projectors. [11]

5. Amateur astronomy - Wikipedia

   en.wikipedia.org/wiki/Amateur_astronomy

   Amateur astronomers watch the night sky during the Perseid meteor shower.. Amateur astronomy is a hobby where participants enjoy observing or imaging celestial objects in the sky using the unaided eye, binoculars, or telescopes.

6. Texas Instruments SN76477 - Wikipedia

   en.wikipedia.org/wiki/Texas_Instruments_SN76477

   The following quotation summarizes its facilities: [T]he SN76477 generates complex audio signal waveforms by combining the outputs of a low frequency oscillator, variable frequency (voltage controlled) oscillator (VCO) and noise source, modulating the resulting composite signal with a selected envelope and, finally, adjusting the signal's attack and decay periods.