Brownian Motion

发生了什么

Imagine that a pollen particle is suspended in a glass of water. If we were to observe and record the vertical position of the particle over time, we would find that its movements were random. And if we were to plot this position, we’d get a jagged path through time (Figure 1 1 1 , left). This path would be just one of many possible paths, and if we were to repeat this observational experiment many times, we would n…

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