One-dimensional Brownian motion

Virtual laboratory > Heat input > into a particle

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This demonstration stand models continuous heating of a set of particles (the Brownian motion).

[math]d \dot u = -\eta \dot u \, dt - \omega u \, dt + b p \sqrt{dt}[/math]

where [math]\eta[/math] is the specific viscosity, [math]\sigma^2[/math] is the variance, [math]\omega[/math] is the stiffness.