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  2. Light switch - Wikipedia

    en.wikipedia.org/wiki/Light_switch

    Two light switches in one box. The switch on the right is a dimmer switch. The switch box is covered by a decorative plate. The first light switch employing "quick-break technology" was invented by John Henry Holmes in 1884 in the Shieldfield district of Newcastle upon Tyne. [1]

  3. Wilkinson plc - Wikipedia

    en.wikipedia.org/wiki/Wilkinson_plc

    The firm started as F. Wilkinson & Company in Stourbridge, [1] where from 1922 to 1927 Frank Wilkinson (1897-1927) was the first to commercialise the acid method of glass polishing to replace polishing of cut-glass by hand.

  4. Distribution board - Wikipedia

    en.wikipedia.org/wiki/Distribution_board

    A distribution board (also known as panelboard, circuit breaker panel, breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure.

  5. Wilko - Wikipedia

    en.wikipedia.org/wiki/Wilko

    Wilko.com Limited (trading as Wilko) is a British home improvement and homeware retailer. It was founded as Wilkinson's by James Kemsey Wilkinson and Mary Cooper in 1930, opening its first store as a hardware retailer in Leicester.

  6. Wilkinson - Wikipedia

    en.wikipedia.org/wiki/Wilkinson

    All pages with titles beginning with Wilkinson; All pages with titles containing Wilkinson; Wilkinson Creek (disambiguation) Wilkinson v. United States, a law case heard by the US Supreme Court; Wilkinson's catalyst, a chemical catalyst; Wilkinson's polynomial, in numerical analysis; Wilkinson power divider, an RF signal splitter with special ...

  7. Wilkinson power divider - Wikipedia

    en.wikipedia.org/wiki/Wilkinson_power_divider

    The Wilkinson design can also be used as a power combiner because it is made up of passive components and hence is reciprocal. First published by Ernest J. Wilkinson in 1960, [ 1 ] this circuit finds wide use in radio frequency communication systems utilizing multiple channels since the high degree of isolation between the output ports prevents ...

  8. TVR M series - Wikipedia

    en.wikipedia.org/wiki/TVR_M_Series

    One of the minor undocumented variations found on M-series cars is the presence of a map light built into the upper windscreen surround of the 3000S. It appears to have been included only on a very small number of cars built near the end of the production run. When production of the 3000S ended (with 258 cars built [6]), it cost £8,730.

  9. Wilcoxon signed-rank test - Wikipedia

    en.wikipedia.org/wiki/Wilcoxon_signed-rank_test

    The Wilcoxon signed-rank test is a non-parametric rank test for statistical hypothesis testing used either to test the location of a population based on a sample of data, or to compare the locations of two populations using two matched samples. [1]