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  2. Suction - Wikipedia

    en.wikipedia.org/wiki/Suction

    Suction is the day-to-day term for forces experienced by objects that are exposed to the movement of gases or liquids moving along a pressure gradient. Contrary to popular belief, however, the forces acting in this case do not originate from the lower pressure side (the vacuum), but from the side of the higher pressure.

  3. Role suction - Wikipedia

    en.wikipedia.org/wiki/Role_suction

    Role suction is a term introduced in the United States by Fritz Redl in the mid-20th century to describe the power of a social group to allocate roles to its members.. W. R. Bion's group dynamics further explored the ways whereby the group (unconsciously) allocates particular functions to particular individuals in order to have its covert emotional needs met; [1] and the process has recently ...

  4. Force-field analysis - Wikipedia

    en.wikipedia.org/wiki/Force-field_analysis

    It looks at forces that are either driving the movement toward a goal (helping forces) or blocking movement toward a goal (hindering forces). The principle, developed by Kurt Lewin , is a significant contribution to the fields of social science , psychology , social psychology , community psychology , communication , organizational development ...

  5. Slab suction - Wikipedia

    en.wikipedia.org/wiki/Slab_suction

    Slab suction is weaker than slab pull, which is the strongest of the driving forces. When measuring the forces of these two mechanisms, slab pull in subducting plate boundaries for upper mantle slabs is 1.9 × 10^21 N. [clarification needed] In comparison slab suction in the upper and lower mantle totaled 1.6 × 10^21 N. [3]

  6. Slab pull - Wikipedia

    en.wikipedia.org/wiki/Slab_pull

    Slab pull is a geophysical mechanism whereby the cooling and subsequent densifying of a subducting tectonic plate produces a downward force along the rest of the plate. In 1975 Forsyth and Uyeda used the inverse theory method to show that, of the many forces likely to be driving plate motion, slab pull was the strongest. [1]

  7. Pore water pressure - Wikipedia

    en.wikipedia.org/wiki/Pore_water_pressure

    Matric suction: the defining trait of unsaturated soil, this term corresponds to the pressure dry soil exerts on the surrounding material to equalise the moisture content in the overall block of soil and is defined as the difference between pore air pressure, (), and pore water pressure, ().

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  9. Field theory (psychology) - Wikipedia

    en.wikipedia.org/wiki/Field_theory_(psychology)

    Wanting to shift the focus of psychology away from Aristotelian views and more towards Galileo's approach, he believed psychology needed to follow physics. Drawing from both mathematics and physics, Lewin took the concept of the field, the focus of one's experiences, personal needs, and topography to map spatial relationships. Lewin created a ...