| John Playfair - Astronomy - 1812 - 344 pages
...be permanent, though in strictness this epithet is not applicable to the course of any river. 291. When the sections of a river vary, the quantity of...velocities are inversely as the areas of the sections. This must happen, in order to preserve the same quantity of discharge. N 3 SECT. SECT. III. PERCUSSION... | |
| Newcastle-upon-Tyne river comm - Tyne, River (England) - 1836 - 62 pages
...water contributes greatly to its motion, so that it is not in proportion to the slope only."§ 5th. " When the sections of a river vary, the quantity of...velocities are inversely as the areas of the sections. This must happen in order to preserve the same quantity of discharge. 1 "!! * Encyclop. Britan. vol.... | |
| 1846 - 648 pages
...water contributes greatly to its motion, so that it is not in proportion to the slope only."J 5th. " When the sections of a river vary, the quantity of...velocities are inversely as the areas of the sections. This must happen in order to preserve the sameqnantity of discharge. "|| I may here add that Zendrini,... | |
| Technology - 1848 - 652 pages
...following page, of a river with a rectangular bed, whose breadth = b, and depth — d, when R=-M and (5). But as I have before observed (ante p. 177),...follows that the velocity would be n times less at the ON THE LAW OF THE FLOW OF WATER IN OPEN CHANNELS. larger than at the lesser section, and if consequently,... | |
| Edward Killwick Calver - Rivers - 1853 - 122 pages
...descending stream diminishes in rate directly it meets with an expanse according to the known law, that " when the sections of a river vary, the quantity...velocities are inversely as the areas of the sections," — the velocity of the upward current or stream of flood must also be diminished by such irregularities,... | |
| Edward Killwick Calver - Rivers - 1853 - 122 pages
...the velocity increases, till, in very great velocities, it approaches to the ratio of equality. 5. When the sections of a river vary, the quantity of...velocities are inversely as the areas of the sections. 6. The mean velocity of a stream upon any one section is the arithmetical mean between the velocity... | |
| Edward Killwick Calver - Rivers - 1853 - 122 pages
...the velocity increases, till, in very great velocities, it approaches to the ratio of equality. 5. When the sections of a river vary, the quantity of water remaining the same, the^mean velocities are inversely as the areas of the sections. 6. The mean velocity of a stream upon... | |
| Olinthus Gregory - 1863 - 482 pages
...applicable to the course of any river. 7. When the sections of a river vary, the quantity of wafer remaining the same, the mean velocities are inversely as the areas of the sections. This must happen, in order to preserve the same quantity of discharge. ( P lay fair' s Outlines.) 8.... | |
| William Thomas Brande, George William Cox - Encyclopedias and dictionaries - 1866 - 972 pages
...(Playfair's Elemmts of Natural 2 These formulae are deduced from the experiments of Du Buat. Philosophy.) When the sections of a river vary, the quantity of...velocities are inversely as the areas of the sections ; but when the river reçoives a perwould appear from experiment that this last consequence only holds... | |
| Mechanical engineering - 1874 - 1186 pages
...said to be permanent, though in strictness this epithet is not applicable to the course of any river. When the sections of a river vary, the quantity of...velocities are inversely as the areas of the sections. This must happen, in order to preserve the same quantity of discharge. The following table, abridged... | |
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