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  2. Sprinkler system timer - Wikipedia

    en.wikipedia.org/wiki/Sprinkler_system_timer

    A sprinkler system timer is an electrical device that is used to set an irrigation sprinkler system to come on automatically at a certain time. Irrigation timers first appeared in the early 1960s to control large-radius lawn sprinklers, which at the time usually contained their own electrically operated valve (most golf-course sprinklers still use this type of actuation).

  3. Impact sprinkler - Wikipedia

    en.wikipedia.org/wiki/Impact_sprinkler

    An impact sprinkler (sometimes called an impulse sprinkler) is a type of irrigation sprinkler in which the sprinkler head, driven in a circular motion by the force of the outgoing water, pivots on a bearing on top of its threaded attachment nut. Invented in 1933 by Orton Englehart, it quickly found widespread use.

  4. Irrigation sprinkler - Wikipedia

    en.wikipedia.org/wiki/Irrigation_sprinkler

    An impact sprinkler head in action Sprinklers spraying water to irrigate vine plants in a vineyard. An irrigation sprinkler (also known as a water sprinkler or simply a sprinkler) is a device used to irrigate (water) agricultural crops, lawns, landscapes, golf courses, and other areas. They are also used for cooling and for the control of ...

  5. Fire sprinkler - Wikipedia

    en.wikipedia.org/wiki/Fire_sprinkler

    A fire sprinkler mounted on a ceiling. A fire sprinkler or sprinkler head is the component of a fire sprinkler system that discharges water when the effects of a fire have been detected, such as when a predetermined temperature has been exceeded. Fire sprinklers are extensively used worldwide, with over 40 million sprinkler heads fitted each year.

  6. Fire sprinkler system - Wikipedia

    en.wikipedia.org/wiki/Fire_sprinkler_system

    Suppression mode sprinklers, also known as Early Suppression Fast Response sprinklers, are intended to result in a severe sudden reduction of the heat release rate of the fire, prior to manual intervention. Control mode sprinkler systems are designed using an area and density approach.

  7. Hunter 31-2 - Wikipedia

    en.wikipedia.org/wiki/Hunter_31-2

    Hunter 31-2, showing walk-through transom. The Hunter 31-2 is a recreational keelboat, built predominantly of fiberglass.It has a fractional sloop B&R rig, a plumb stem, a walk-through reverse transom wit a swimming platform, an internally-mounted spade-type rudder controlled by a wheel and a fixed fin keel with a weighed bulb.

  8. Sprinkler (dance) - Wikipedia

    en.wikipedia.org/wiki/Sprinkler_(dance)

    The Sprinkler dance is a form of dance move involving a person placing one hand on the back of the neck, and waving the other arm back and forth while spinning in a circle. This simulates the motion of a garden irrigation sprinkler .

  9. Hunter Lab - Wikipedia

    en.wikipedia.org/wiki/Hunter_Lab

    Hunter Lab (also known as Hunter L,a,b) is a color space defined in 1948 [1] [2] by Richard S. Hunter. It was designed to be computed via simple formulas from the CIEXYZ space, but to be more perceptually uniform.