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  2. Holiday lighting technology - Wikipedia

    en.wikipedia.org/wiki/Holiday_lighting_technology

    Glow discharge light bulbs also can be used as holiday lights. The most common are neon, argon and mercury fluorescent lamps. They can glow in different colors, depending on the gas filling or the chemical composition of the phosphor. Neon lamps have a characteristic orange color, argon glow purple.

  3. Twinkle bulb - Wikipedia

    en.wikipedia.org/wiki/Twinkle_bulb

    The advent of miniature lights found the adaptation of twinkle bulbs as flasher bulbs, which interrupt the entire series circuit of anywhere from 10 to 50 bulbs when powered from 120-volt mains electricity (in North America). These are easily recognizable by their red tips on an otherwise unpainted clear white bulb, and are available in the ...

  4. 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 ...

  5. Light-emitting diode - Wikipedia

    en.wikipedia.org/wiki/Light-emitting_diode

    One-color light is well suited for traffic lights and signals, exit signs, emergency vehicle lighting, ships' navigation lights, and LED-based Christmas lights. Because of their long life, fast switching times, and visibility in broad daylight due to their high output and focus, LEDs have been used in automotive brake lights and turn signals.

  6. Planetarium projector - Wikipedia

    en.wikipedia.org/wiki/Planetarium_projector

    A Zeiss Universarium Mark IX starball projector. A planetarium projector, also known as a star projector, is a device used to project images of celestial objects onto the dome in a planetarium. Modern planetarium projectors were first designed and built by the Carl Zeiss Jena company in Germany between 1923 and 1925, and have since grown more ...

  7. Gobo (lighting) - Wikipedia

    en.wikipedia.org/wiki/Gobo_(lighting)

    The discolored portion is oxidation of the stainless steel caused by the high temperature of the lamp, but the gobo is still usable. A glass gobo of the Earth, projected using a halogen projector A gobo being projected with beams of smoke. Gobos are used with projectors and simpler light sources to create lighting scenes in theatrical applications.