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  2. Widdershins - Wikipedia

    en.wikipedia.org/wiki/Widdershins

    The anticlockwise or counterclockwise direction. Widdershins (sometimes withershins, widershins or widderschynnes) is a term meaning to go counter-clockwise, anti-clockwise, or lefthandwise, or to walk around an object by always keeping it on the left.

  3. Anticyclonic tornado - Wikipedia

    en.wikipedia.org/wiki/Anticyclonic_tornado

    An anticyclonic tornado is a tornado which rotates in a clockwise direction in the Northern Hemisphere and a counterclockwise direction in the Southern Hemisphere. [1] The term is a naming convention denoting the anomaly from normal rotation which is cyclonic in upwards of 98 percent of tornadoes.

  4. Clockwise - Wikipedia

    en.wikipedia.org/wiki/Clockwise

    The reason for the clockwise standard for most screws and bolts is that supination of the arm, which is used by a right-handed person to tighten a screw clockwise, is generally stronger than pronation used to loosen. Sometimes the opposite (left-handed, counterclockwise, reverse) sense of threading is used for a special reason.

  5. Rotation matrix - Wikipedia

    en.wikipedia.org/wiki/Rotation_matrix

    represents a counterclockwise rotation of a vector v by an angle θ, or a rotation of CS by the same angle but in the opposite direction (i.e. clockwise). Alibi and alias transformations are also known as active and passive transformations, respectively.

  6. High-pressure area - Wikipedia

    en.wikipedia.org/wiki/High-pressure_area

    The coriolis force caused by the Earth's rotation is what gives winds within high-pressure systems their clockwise circulation in the northern hemisphere (as the wind moves outward and is deflected right from the center of high pressure) and counterclockwise circulation in the southern hemisphere (as the wind moves outward and is deflected left ...

  7. Anticyclonic rotation - Wikipedia

    en.wikipedia.org/wiki/Anticyclonic_rotation

    Thus, just anticyclonic rotation would mean clockwise in the Northern Hemisphere and counter-clockwise in the Southern. For large-scale weather systems, greater than approximately 500 km (310 mi), anticyclonic rotation only occurs for high-pressure systems .

  8. Anticyclone - Wikipedia

    en.wikipedia.org/wiki/Anticyclone

    An anticyclone is a weather phenomenon defined as a large-scale circulation of winds around a central region of high atmospheric pressure, clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere as viewed from above (opposite to a cyclone). [1]

  9. Anticyclonic storm - Wikipedia

    en.wikipedia.org/wiki/Anticyclonic_storm

    Typically, the mesocyclone rotates cyclonically (counter-clockwise in the northern hemisphere), but on occasion it can rotate anticyclonically, thus yielding a Mesoanticyclone. Mesoanticyclones in the northern hemisphere are more likely to form in an environment where the vertical wind shear vector turns in a counterclockwise manner with height ...