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" Objects near the horizon appear more elevated by it above their true directions than those at a high altitude. 3dly. The rate of its increase is nearly in proportion to the tangent of the apparent angular distance of the object from the zenith. But this... "
Outline of the Method of Conducting a Trigonometrical Survey, for the ... - Page 138
by Edward Charles Frome - 1850 - 253 pages
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Astronomy

sir John Frederick W. Herschel (1st bart.) - 1833 - 502 pages
...directions than those at a high alIitude. 3dly. The rate of its increase is nearly in proportion to the tangent of the apparent angular distance of the object from the zenith. But this rule, which is not far from the truth, at moderate zenith distances, ceases to give correct...
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A Treatise on Astronomy

John Frederick William Herschel - 1834 - 408 pages
...directions than those at a high altitude. 3dly. The rate of its increase is nearly in proportion to the tangent of the apparent angular distance of the object from the zenith. But this rule, which is not far from the truth, at moderate zenith distances, ceases togive correct...
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Outline of the Method of Conducting a Trigonometrical Survey, for the ...

Edward Charles Frome - 1840 - 200 pages
...operation, by the use of any of the numerous tables of refraction ; that by Dr. Young, being given as table 4 in this volume. The rate of the increase of...irregularly, being at the horizon as much as 33', or more than the diameter of the sun or moon. The next correction is for parallax, the explanation...
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Outlines of Astronomy

John Frederick William Herschel - 1849 - 672 pages
...true directions than those at high altitude. 3dly. The rate of its increase is nearly in proportion to the tangent of the apparent angular distance of the object from the zenith. But this rule, which is not far from the truth, at moderate zenith distances, ceases to give correct...
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Descriptive Astronomy

George Frederick Chambers - 1867 - 816 pages
...increases to no less than 33'. The rate of the increase at high altitudes is nearly in proportion to the tangent of the apparent angular distance of the object from the zenith ; but in the vicinity b Since the barometer rises with an causes a decrease of density, it follows...
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A Handbook of Descriptive Astronomy

George Frederick Chambers - 1877 - 978 pages
...increases to no less than 35'. The rate of the increase at high altitudes is nearly in proportion to the tangent of the apparent angular distance of the object from the zenith ; but in the vicinity of the horizon this rule ceases to hold good, and the law becomes much more complicated...
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A Handbook of Descriptive and Practical Astronomy: The sun, planets, and comets

George Frederick Chambers - 1889
...horizon increases to nearly 35'. The rate of the increase at high altitudes is nearly in proportion to the tangent of the apparent angular distance of the object from the zenith ; but in the vicinity of the horizon this rule ceases to hold good, and the law becomes much more complicated...
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Advanced Physiography

John Thornton (M.A.) - 1890 - 342 pages
...directions than those at a high altitude. ' (3) The rate of its increase is nearly in proportion to the tangent of the apparent angular distance of the object from the zenith. But this rule, which is not far from the truth at moderate zenith distances, ceases to give correct...
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