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  2. Guiding center - Wikipedia

    en.wikipedia.org/wiki/Guiding_center

    Since the magnetic Lorentz force is always perpendicular to the magnetic field, it has no influence (to lowest order) on the parallel motion. In a uniform field with no additional forces, a charged particle will gyrate around the magnetic field according to the perpendicular component of its velocity and drift parallel to the field according to its initial parallel velocity, resulting in a ...

  3. Curl (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Curl_(mathematics)

    The above formula means that the component of the curl of a vector field along a certain axis is the infinitesimal area density of the circulation of the field in a plane perpendicular to that axis. This formula does not a priori define a legitimate vector field, for the individual circulation densities with respect to various axes a priori ...

  4. Magnus effect - Wikipedia

    en.wikipedia.org/wiki/Magnus_effect

    The force is perpendicular to the relative direction of motion and oriented towards the direction of rotation, i.e. the direction the "nose" of the ball is turning towards. [7] The magnitude of the force depends primarily on the rotation rate, the relative velocity, and the geometry of the body; the magnitude also depends upon the body's ...

  5. Simple shear - Wikipedia

    en.wikipedia.org/wiki/Simple_shear

    Simple shear is a deformation in which parallel planes in a material remain parallel and ... And the gradient of velocity is constant and perpendicular to the ...

  6. Streamlines, streaklines, and pathlines - Wikipedia

    en.wikipedia.org/wiki/Streamlines,_streaklines...

    The equation of motion of a fluid on a streamline for a flow in a vertical plane is ... is related to the pressure gradient acting perpendicular to the streamline ...

  7. Coriolis force - Wikipedia

    en.wikipedia.org/wiki/Coriolis_force

    The pressure-gradient force is represented by blue arrows, the Coriolis acceleration (always perpendicular to the velocity) by red arrows Schematic representation of inertial circles of air masses in the absence of other forces, calculated for a wind speed of approximately 50 to 70 m/s (110 to 160 mph).

  8. Lift (force) - Wikipedia

    en.wikipedia.org/wiki/Lift_(force)

    When a fluid follows a curved path, there is a pressure gradient perpendicular to the flow direction with higher pressure on the outside of the curve and lower pressure on the inside. [61] This direct relationship between curved streamlines and pressure differences, sometimes called the streamline curvature theorem , was derived from Newton's ...

  9. Vector calculus identities - Wikipedia

    en.wikipedia.org/wiki/Vector_calculus_identities

    In Cartesian coordinates, the divergence of a continuously differentiable vector field = + + is the scalar-valued function: ⁡ = = (, , ) (, , ) = + +.. As the name implies, the divergence is a (local) measure of the degree to which vectors in the field diverge.