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  2. Holiday lighting technology - Wikipedia

    en.wikipedia.org/wiki/Holiday_lighting_technology

    The only types of lights used are mini, C7, and C9. Special wiring was to be installed to light the 125-foot-tall (38 m) pine tree with C9 bulbs for the 2007 display. Miniature lights first came in sets of 35 (3.5 volts per bulb), and sometimes smaller sets of 20 (6 volts per bulb).

  3. Back-illuminated sensor - Wikipedia

    en.wikipedia.org/wiki/Back-illuminated_sensor

    A traditional, front-illuminated digital camera is constructed in a fashion similar to the human eye, with a lens at the front and photodetectors at the back. This traditional orientation of the sensor places the active matrix of the digital camera image sensor—a matrix of individual picture elements—on its front surface and simplifies manufacturing.

  4. Exmor - Wikipedia

    en.wikipedia.org/wiki/Exmor

    Exmor R is a back-illuminated version of Sony's CMOS image sensor. [5] Exmor R was announced by Sony on 11 June 2008 and was the world's first mass-produced implementation of the back-illuminated sensor technology. [6] [non-primary source needed] Sony claims that Exmor R is approximately twice as sensitive as a normal front illuminated sensor.

  5. Christmas lights - Wikipedia

    en.wikipedia.org/wiki/Christmas_lights

    The first known electrically illuminated Christmas tree was the creation of Edward H. Johnson, an associate of inventor Thomas Edison.While he was vice president of the Edison Electric Light Company, he had Christmas tree light bulbs especially made for him.

  6. 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 ...

  7. Backlight - Wikipedia

    en.wikipedia.org/wiki/Backlight

    A backlight is a form of illumination used in liquid-crystal displays (LCDs) that provides illumination from the back or side of a display panel. LCDs do not produce light by themselves, so they need illumination (ambient light or a special light source) to produce a visible image.