follows , therefore , that in a System of pipes of varying areas , in which a fluid is circulating , the pressure that is exerted by that fluid will vary at any point in inverse proportion to the velocity at that point , or in other words , to the sectional area at that point . In the lengths of… … Fi « . 2 . be the greatest pressures , and where the areas are least , there will be the least pressures . Experiments by Mr . Froude proved this . He inserted a series of vertical glass tubes in a horizontal length of pipes which had enlargements and contractions in them as shown by figs . 1 and 2…
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