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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...
A Treatise on Land-surveying: Comprising the Theory Developed from Five ... - Pągina 313
per William Mitchell Gillespie - 1857 - 524 pągines
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## TREATISE ON LAND SURVEYING

...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...
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## A Treatise on Land-surveying: Comprising the Theory Developed from Five ...

William Mitchell Gillespie - 1859 - 418 pągines
...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...
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## An elementary treatise on Mechanics

1863 - 374 pągines
...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...
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## A Treatise on Land-surveying: Comprising the Theory Developed from Five ...

1878 - 508 pągines
...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...
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## A Treatise on Land-surveying: Comprising the Theory Developed from Five ...

William Mitchell Gillespie - 1880 - 524 pągines
...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...
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## A Treatise on Surveying: Comprising the Theory and the Practice

William Mitchell Gillespie - 1887 - 692 pągines
...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...
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## Modern Meteorology: An Outline of the Growth and Present Condition of Some ...

Frank Waldo - 1893 - 460 pągines
...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...
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## Modern Meteorology: An Outline of the Growth and Present Condition of Some ...

Frank Waldo - 1894 - 460 pągines
...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...
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## A Treatise on Surveying: Comprising the Theory and the Practice..., Part 1

...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...
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## Ordnance and gunnery: a text-book prepared for the cadets of the United ...

Ormond Mitchell Lissak - 1907 - 604 pągines
...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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