dynamical friction


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dynamical friction

See dynamical relaxation.

dynamical friction

[dī¦nam·ə·kəl ′frik·shən]
(physics)
The drag force between electrons and ions drifitng with respect to each other.
Sliding friction, in contrast to static friction.
References in periodicals archive ?
The whirling pair will scatter nearby stars, a process known as dynamical friction that draws them closer together.
Merritt's theoretical work suggests that when galaxies merge, dynamical friction quickly draws the two black holes together until they are about 30 light-years apart, but then migration slows before interactions with gas, a stellar bar, or a third black hole might lead to a collision.
In the process he invoked, known as dynamical friction, frequent close encounters among objects fling the more massive objects toward the center of the crowded environment and less massive objects outward.
Massive objects congregate in the Milky Way's core due to a process called dynamical friction.