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Brownian motion: Difference between revisions
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Amwelladmin (talk | contribs) (Created page with "{{a|design|}}Like the Brownian motion in a cup of tea: not only is a spontaneous lurch of all participants in one direction at once unlikely, it is impossible. The Brownian collision that sends one molecule to the left must send another to the right. For every molecule to go left at once defies the laws of physics. Physics requires independently-interacting particles to move in offsetting directions. Hence the emergent stability of a a stationary cup of tea. Indepe...") |
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In other words, while it might be improbable for all particles to collectively move in the same way at the same time due to the random nature of individual particle motions, the conservation of momentum ensures that the sum of all these individual motions complies with the laws of physics. So, at a macroscopic level, momentum is conserved even if the individual trajectories are unpredictable. | In other words, while it might be improbable for all particles to collectively move in the same way at the same time due to the random nature of individual particle motions, the conservation of momentum ensures that the sum of all these individual motions complies with the laws of physics. So, at a macroscopic level, momentum is conserved even if the individual trajectories are unpredictable. | ||
Yes, you are correct. If we consider a system of randomly colliding particles subject to the laws of physics, including the conservation of momentum, it would be logically impossible for all particles to move in the same direction at the same time. The inherent randomness and probabilistic nature of particle motion, combined with the principles of physics, make such a scenario logically impossible. | |||