A Treatise on Surveying: In which the Theory and Practice are Fully Explained. Preceded by a Short Treatise on Logarithms: and Also by a Compendious System of Plane Trigonometry. The Whole Illustrated by Numerous ExamplesE.C. & J. Biddle, 1865 - 428 sider |
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Resultat 1-5 av 12
Side 15
... Polaris ......... 309 To determine the Time Polaris is on the Meridian ...... 310 To run a Meridian by a Meridian Passage observed with a Transit or 314 PAGE By an Observation of Polaris at its greatest Elongation CONTENTS . 15.
... Polaris ......... 309 To determine the Time Polaris is on the Meridian ...... 310 To run a Meridian by a Meridian Passage observed with a Transit or 314 PAGE By an Observation of Polaris at its greatest Elongation CONTENTS . 15.
Side 16
... Polaris at its greatest Elongation ........ ...... 314 By Equal Altitudes of a Star .... SECTION 2. Latitude . 318 To determine the Latitude by a Meridian Altitude of Polaris ........................... ...... 319 By a Meridian Altitude ...
... Polaris at its greatest Elongation ........ ...... 314 By Equal Altitudes of a Star .... SECTION 2. Latitude . 318 To determine the Latitude by a Meridian Altitude of Polaris ........................... ...... 319 By a Meridian Altitude ...
Side 309
... ( Polaris , or a Ursa Minoris ) is situated very nearly at the North Pole of the heavens . If it were exactly so , all ... Polaris is on the meridian , place the compass- sight so that by looking through it Alioth may be SEC . I. ] 309 ...
... ( Polaris , or a Ursa Minoris ) is situated very nearly at the North Pole of the heavens . If it were exactly so , all ... Polaris is on the meridian , place the compass- sight so that by looking through it Alioth may be SEC . I. ] 309 ...
Side 310
... Polaris will also be covered by the line . The eye and plumb - line are then very nearly in the me- ridian . If the time is noted , and Polaris sighted to seven- teen minutes after the former observation , the meridian will be much more ...
... Polaris will also be covered by the line . The eye and plumb - line are then very nearly in the me- ridian . If the time is noted , and Polaris sighted to seven- teen minutes after the former observation , the meridian will be much more ...
Side 311
... must be increased by one and the hours diminished by twelve . Required the time of the upper transit of Polaris , Sep- tember 11 , 1855 , for Philadelphia . Sidereal time at mean noon , Greenwich , September 10 SEC . I. ] 311 MERIDIANS .
... must be increased by one and the hours diminished by twelve . Required the time of the upper transit of Polaris , Sep- tember 11 , 1855 , for Philadelphia . Sidereal time at mean noon , Greenwich , September 10 SEC . I. ] 311 MERIDIANS .
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A Treatise on Surveying: In which the Theory and Practice are Fully ... Samuel Alsop Uten tilgangsbegrensning - 1857 |
A Treatise on Surveying: In Which the Theory and Practice Are Fully ... Samuel Alsop Ingen forhåndsvisning tilgjengelig - 2018 |
Vanlige uttrykk og setninger
ABCD acres adjacent angles adjacent sides bearings and distances calculate the area centre chains circle column compass correction Cosine Cotang decimal deflection determine Diff difference of latitude Dist divided division line double departure draw east equal error EXAMPLES field-notes figure given area given line given point Given the bearings horizontal hour angle inch instrument latitude and departure length line running logarithm mean proportional measured meridian method multiplier needle number of degrees offsets opposite parallel parallelogram perpendicular plat plate Polaris Problem protractor quotient radius ratio rectangle right angles right ascension rule scale sight sine square station straight line subtract survey surveyor Take the difference tance Tang tangent telescope theodolite tract of land transit trapezium triangle Trigonometry vernier whence
Populære avsnitt
Side 38 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Side 70 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Side 27 - Root of a Number, Divide the logarithm of the number by the index of the required root.
Side 33 - When one straight line meets another, so as to make two adjacent angles equal, each of these angles is called a right angle; and the first line is said to be perpendicular to the second.
Side 195 - To multiply a decimal by 10, 100, 1000, &c., remove the decimal point as many places to the right as there are ciphers in the multiplier ; and if there be not places enough in the number, annex ciphers.
Side 73 - ... will be — As the base or sum of the segments Is to the sum of the other two sides, So is the difference of those sides To the difference of the segments of the base.
Side 37 - If two triangles have two sides and the included angle of one respectively equal to the sides and the included angle of the other, the triangles are congruent.
Side 126 - If two triangles have two angles, and the included side of the one equal to two angles and the included side of the other, they are equal in all their parts.
Side 39 - The angle at the centre of a circle is double the angle at the circumference on the same arc.
Side 39 - The square of the hypothenuse of a right angled triangle is equal to the sum of the squares of both the other sides.