WOLFRAM|DEMONSTRATIONS PROJECT

Spreading Particles in a Disk

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δ
0.1
θ
-π
final result
show paths
This Demonstration shows particles spreading inside a disk workspace. These might, for example, be magnetized particles inside a Petri dish pushed by an external magnetic field. The particles start along the green arc, bounded by red and blue locators. The propagated particles are pushed in the direction of
θ
and are incident along the arc drawn in blue. Often particles cannot be controlled perfectly, which is modeled by specifying an angular spread
±δ
to either side of
θ
. This Demonstration shows the maximum and minimum particle spread (arc length) into which the particles can be manipulated.