Water Flow in Pipes

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“Suppose we have a pipe A B laid in a horizontal position so that the centre line is exactly at the same level all along the pope, and differences of level may be neglected. Let water be delivered b this pipe at a steady from a reservoir provided with a constant supply which keeps the free surface level always the same. If the pipe A B is of uniform sectional area throughout, and is at all points offers a uniform frictional resistance to the flow of the water, the pressure will gradually become less at points along it more and more distanct from the reservoir. This is no lonfer the case when the pipe is larger at one place than another, as shown in the [figure].” (Britannica, 1891)


Benson John Lossing, ed. The New Popular Educator (London, England: Cassell & Company Limited, 1891)


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