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  2. Ekman transport - Wikipedia

    en.wikipedia.org/wiki/Ekman_transport

    Ekman transport is the net motion of fluid as the result of a balance between Coriolis and turbulent drag forces. In the picture above, the wind blowing North in the northern hemisphere creates a surface stress and a resulting Ekman spiral is found below it in the water column. Ekman transport is part of Ekman motion theory, first investigated ...

  3. Facial Action Coding System - Wikipedia

    en.wikipedia.org/wiki/Facial_Action_Coding_System

    Muscles of head and neck. The Facial Action Coding System (FACS) is a system to taxonomize human facial movements by their appearance on the face, based on a system originally developed by a Swedish anatomist named Carl-Herman Hjortsjö. [1] It was later adopted by Paul Ekman and Wallace V. Friesen, and published in 1978. [2]

  4. Paul Ekman - Wikipedia

    en.wikipedia.org/wiki/Paul_Ekman

    Paul Ekman. Paul Ekman (born February 15, 1934) [1] is an American psychologist and professor emeritus at the University of California, San Francisco who is a pioneer in the study of emotions and their relation to facial expressions. [2] He was ranked 59th out of the 100 most cited psychologists of the twentieth century. [3]

  5. Upwelling - Wikipedia

    en.wikipedia.org/wiki/Upwelling

    The result is a net movement of surface water at right angles to the direction of the wind, known as the Ekman transport (See also Ekman Spiral). When Ekman transport is occurring away from the coast, surface waters moving away are replaced by deeper, colder, and denser water. [5]

  6. Microexpression - Wikipedia

    en.wikipedia.org/wiki/Microexpression

    Microexpressions of emotions (in order: surprise, fear/shock, sadness, anger, happiness and disgust) A microexpression is a facial expression that only lasts for a short moment. It is the innate result of a voluntary and an involuntary emotional response occurring simultaneously and conflicting with one another, and occurs when the amygdala ...

  7. Ekman layer - Wikipedia

    en.wikipedia.org/wiki/Ekman_layer

    The Ekman layer is the layer in a fluid where the flow is the result of a balance between pressure gradient, Coriolis and turbulent drag forces. In the picture above, the wind blowing North creates a surface stress and a resulting Ekman spiral is found below it in the column of water. The Ekman layer is the layer in a fluid where there is a ...

  8. Facial expression - Wikipedia

    en.wikipedia.org/wiki/Facial_expression

    Facial expression is the motion and positioning of the muscles beneath the skin of the face. These movements convey the emotional state of an individual to observers and are a form of nonverbal communication. They are a primary means of conveying social information between humans, but they also occur in most other mammals and some other animal ...

  9. Ekman spiral - Wikipedia

    en.wikipedia.org/wiki/Ekman_spiral

    The Ekman spiral is an arrangement of ocean currents: the directions of horizontal current appear to twist as the depth changes. [1] The oceanic wind driven Ekman spiral is the result of a force balance created by a shear stress force, Coriolis force and the water drag. This force balance gives a resulting current of the water different from ...