It is common knowledge that streams tend to … … [. 250] If the liquid [of a flat-bottomed tea cup] is made to … the cup. The explanation of this phenomenon is … in the neighborhood of the walls of the … therefore the centrifugal force, will be smaller near … [The liquid will revolve as a donut and sweep the leaves towards the center.] … The same sort of thing happens with a … At every cross-section of its course, where it … [p. 251] Even where there is no bend in … will still take place, if only on a …
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