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  2. Multiway switching - Wikipedia

    en.wikipedia.org/wiki/Multiway_switching

    A "4-way" (intermediate) switch is a purpose built double pole, double throw (DPDT) switch, internally wired in manufacture to reverse the connections between the input and output and having only four external terminals. This switch has two pairs of "traveler" terminals that it connects either straight through, or crossed over (transposed, or ...

  3. Light switch - Wikipedia

    en.wikipedia.org/wiki/Light_switch

    3 Australian light switches and a "neon" indicator—in a 4-gang wall-plate. The lower switch is in the "on" or "down" position. Two Australian rocker switches (disassembled), together with a cutaway view, and a view of the switch connections An Australian architrave-mounted 2-gang switch plate and switches.

  4. Dimmer - Wikipedia

    en.wikipedia.org/wiki/Dimmer

    A dimmer rack containing 192 dimmers, with one dimmer per circuit. The dark-grey box at the upper left is a demultiplexer. Dimmer in a residential application with RF-based remote control. Non domestic dimmers are usually controlled remotely by means of various protocols.

  5. 3-way lamp - Wikipedia

    en.wikipedia.org/wiki/3-way_lamp

    A 3-way lamp, also known as a tri-light, is a lamp that uses a 3-way light bulb to produce three levels of light in a low-medium-high configuration. A 3-way lamp requires a 3-way bulb and socket, and a 3-way switch. In 3-way incandescent light bulbs, each of the filaments operates at full voltage. Lamp bulbs with dual carbon filaments were ...

  6. Twilight switch - Wikipedia

    en.wikipedia.org/wiki/Twilight_switch

    A twilight switch is an electronic component that allows the automatic activation of a lighting circuit when natural light drops in a given environment. Among a large number of uses, the most common is to enable automatic lighting of streets, roads, highways, roads, gardens, courtyards, etc., when sunlight drops below a certain level (e.g.: a ...

  7. Complementary colors - Wikipedia

    en.wikipedia.org/wiki/Complementary_colors

    Complementary colors are pairs of colors which, when combined or mixed, cancel each other out (lose chroma) by producing a grayscale color like white or black. [1] [better source needed] When placed next to each other, they create the strongest contrast for those two colors. Complementary colors may also be called "opposite colors".

  8. Color mixing - Wikipedia

    en.wikipedia.org/wiki/Color_mixing

    Subtractive mixing combines two or more colors into a mixture with brightness lower than either of the two components' brightnesses. An ideal physical model to demonstrate the subtractive model comprises a white light transmitting through two colored filters, each of which subtract a portion of the white light, transmitting a light of the ...

  9. Hidden Colors - Wikipedia

    en.wikipedia.org/wiki/Hidden_Colors

    The third film in the series, Hidden Colors 3: The Rules of Racism, was released on June 26, 2014. [1] [7] The fourth film in the series, Hidden Colors 4: The Religion of White Supremacy was successfully funded on Kickstarter in March 2015. The fifth film in the series, Hidden Colors 5: The Art of Black Warfare, was released in August 2019.