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by David Sang
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 | describe the nature of Brownian motion in terms of dust-air interactions; |
| explain how the motion of a dust grain is affected by (a) its mass and (b) temperature; and |
| describe how the displacement of a particle from its initial position changes with
elapsed time.
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Brownian movement in Clarkia pollen: a reprise of the first observations - Background to Robert Brown and his observations.
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