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  2. Ceiling fan - Wikipedia

    en.wikipedia.org/wiki/Ceiling_fan

    These fans, hence the name "mini" ceiling fan are relatively small in size, usually ranging from 40.64 cm to 91.44 cm, however, some still span to sizes as large as 106.68 cm in diameter. Additionally, unlike traditional ceiling fans, these fans typically use synchronous motors. Bladeless ceiling fans.

  3. Official Table of Drops - Wikipedia

    en.wikipedia.org/wiki/Official_Table_of_Drops

    The Official Table of Drops, formerly issued by the British Home Office, is a manual which is used to calculate the appropriate length of rope for long drop hangings. Following a series of failed hangings, including those of John Babbacombe Lee , a committee chaired by Henry Bruce, 1st Baron Aberdare was formed in 1886 to discover and report on ...

  4. High-volume low-speed fan - Wikipedia

    en.wikipedia.org/wiki/High-volume_low-speed_fan

    A high-volume low-speed (HVLS) fan is a type of mechanical fan greater than 7 feet (2.1 m) in diameter. [1] HVLS fans are generally ceiling fans although some are pole mounted. HVLS fans move slowly and distribute large amounts of air at low rotational speed– hence the name "high volume, low speed."

  5. Price floor - Wikipedia

    en.wikipedia.org/wiki/Price_floor

    The stability provisions referred to are typically floor and ceiling prices [20] (a ceiling price is also known as a safety valve), which are implemented as follows. When permits are auctioned, there is a floor (reserve) price below which permits are not sold, and permits for immediate use are always made available at the ceiling price, even if ...

  6. Guide number - Wikipedia

    en.wikipedia.org/wiki/Guide_number

    Cameras with focal-plane shutters—even if they had PC connectors with X, F, M, or S-sync delays ("xenon sync" with zero delay and flashbulbs with peak delays of 5, 20, and 30 ms)—could not be used at speeds that attenuated guide numbers with most types of flashbulbs because their light curves were characterized by rapid rise and fall rates; the second shutter curtain would begin wiping ...

  7. Barrel vault - Wikipedia

    en.wikipedia.org/wiki/Barrel_vault

    Note the absence of clerestory windows, all of the light being provided by the Rose window at one end of the vault. The Cloisters , New York City A barrel vault , also known as a tunnel vault , wagon vault or wagonhead vault , is an architectural element formed by the extrusion of a single curve (or pair of curves, in the case of a pointed ...

  8. File:SmithChartLineLength.svg - Wikipedia

    en.wikipedia.org/wiki/File:SmithChartLineLength.svg

    The following other wikis use this file: Usage on ca.wikipedia.org Transformador d'impedància de quart d'ona; Usage on cs.wikipedia.org PÅ™enosové vedení

  9. Dropped ceiling - Wikipedia

    en.wikipedia.org/wiki/Dropped_ceiling

    A dropped ceiling is a secondary ceiling, hung below the main (structural) ceiling. It may also be referred to as a drop ceiling, T-bar ceiling, false ceiling, suspended ceiling, grid ceiling, drop in ceiling, drop out ceiling, or ceiling tiles and is a staple of modern construction and architecture in both residential and commercial applications.