 | William Mitchell Gillespie - 1856 - 466 pages
...temperature at the freezing point, 32° Fahrenheit. For higher or lower temperatures add or subtract ly foot for each degree of Fahrenheit. If a wind blows...of the angle which the direction of the wind makes 314 SURVEYING WITHOUT INSTRUMENTS, [PART ix. with the direction of the sound.* If the gun be fired... | |
 | W. M. Gillespie - Surveying - 1859 - 540 pages
...temperature at the freezing point, 32° Fahrenheit. For higher or lower temperatures add or subtract If foot for each degree of Fahrenheit. If a wind blows...of the angle which the direction of the wind makes 314 SURVEYING WITHOUT INSTRUMENTS. [PAKT ix. with the direction of the sound.* If the gun be fired... | |
 | Stephen Parkinson - Mechanics - 1863 - 408 pages
...hence the virtual velocity of a force is equal to the virtual velocity of its point of application multiplied by the cosine of the angle, which the direction of the displacement of the point makes with the direction of the force. The product of any force into its... | |
 | Surveying - 1878 - 534 pages
...temperature at the freezing point, 32° Fahrenheit. For higher or lower temperatures add or subtract If foot for each degree of Fahrenheit. If a wind blows...is not at hand, suspend a pebble to a string (such aa a thread drawn from a handkerchief) and count its vibrations. If it be 39J inches long, it will... | |
 | William Mitchell Gillespie - Surveying - 1880 - 540 pages
...subtracted. If it blows obliquely, the correction will evidently equal its velocity multiplied by the cosme of the angle which the direction of the wind makes...direction of the sound.* If the gun be fired at each end af the base in turn, and the means of the times taken, the effect of the wind will be eliminated. If... | |
 | William Mitchell Gillespie - Surveying - 1887 - 722 pages
...the sound, its velocity must be added or subtracted. If it blows obliquely, the correction will be its velocity multiplied by the cosine of the angle...of the wind makes with the direction of the sound. 2. By measuring with the sextant the angular height of the mast of a vessel, then we have : Distance... | |
 | Frank Waldo - Meteorology - 1893 - 520 pages
...inward towards the centre of the cyclone, and its path is approximately that of a logarithmic spiral. The angle which the direction of the wind makes with the direction of the gradient, is greater on the sea than on the land, greater in the warm than in the cold season, greater... | |
 | Frank Waldo - Meteorology - 1894 - 514 pages
...inward towards the centre of the cyclone, and its path is approximately that of a logarithmic spiral. The angle which the direction of the wind makes with the direction of the gradient, is greater on the sea than on the land, greater in the warm than in the cold season, greater... | |
 | William Mitchell Gillespie - Surveying - 1897 - 610 pages
...or lower temperatures add or subtract 1| foot for each degree of Fahrenheit. If a wind blows witli or against the movement of the sound, its velocity...makes with the direction of the sound. If the gun be tired at each end of the base in turn, and the means of the times taken, the effect of the wind will... | |
 | Ormond Mitchell Lissak - Gunnery - 1907 - 686 pages
...lies in a direction oblique to the front of the battery, the parallax is equal to the normal parallax multiplied by the cosine of the angle which the direction of the point makes with the normal to the battery front. The parallax has been calculated for different ranges... | |
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If foot for each degree of Fahrenheit. If a wind blows with or against the movement of the sound, its velocity must be added or subtracted. If it blows obliquely, the correction will evidently equal its velocity multiplied by the cosine of the angle which... 
