## Text Book of Topographical and Geographical Surveying |

### Contents

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### Other editions - View all

Text Book of Topographical and Geographical Surveying Charles Frederick Close No preview available - 2022 |

### Common terms and phrases

55 Length accuracy accurate adjustment altitude Angle Book Approx approximate astronomical axis azimuth barometer base bubble celestial sphere centre Chron chronometer circle clinometer co-ordinates collimation computed conical contours Corr correction cosec cross-wires determined Diff difference of longitude earth equal-area equator eye-piece fixed geodetic Greenwich heavenly body height hill hour angle hypsometer inch instrument intersection interval LATI latitude latitude and longitude Length in feet limb Logarithm longitude mean measured meridians and parallels method micrometer miles moon moon's Nautical Almanac object object-glass observed latitude obtained occultation Ordnance Survey orthomorphic parallax picket plane plane-table Plate plotted pole Pole Star Polyconic Projection position Prime Vertical probable error projection rays readings refraction right angles right ascension scale side sidereal signals station stone subtended sun or star surface Table taken tape telescope theodolite topographical transit traverse triangulation trigonometrical TUDE vernier vertical angles wire ΔΑ

### Popular passages

Page 122 - Each planet moves in its orbit at such a speed that a line joining it to the sun sweeps over equal areas in equal times. 3. The square of the time...

Page 37 - 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.

Page 129 - The mean solar day is divided into 24 hours, each hour into 60 minutes, and each minute into 60 seconds.

Page 129 - An apparent solar day is the interval between two successive transits of the sun's centre across the meridian of any place.

Page 122 - As the planet moves round the sun, its radius-vector (or the line joining it to the sun) passes over equal areas in equal times. To explain these laws, let PA (Fig. 20) be the ellipse in which the planet moves. Then the sun will not be in the cenFio.

Page 129 - A SIDEREAL DAY is the interval of time between two successive upper transits of the vernal equinox over the same meridian.

Page 204 - ... is equal to the probable error of a single observation divided by the square root of the number of observations. The probable error of the mean, hence, decreases as Vw increases.

Page 124 - The parsec is the distance at which a star would have a parallax of one second of arc.

Page 125 - The longitude of a place is the arc of the equator intercepted between the meridian of that place and some assumed meridian to which all others are referred.

Page 56 - triangle of error " is inside the triangle formed by the three fixed points, the position is inside the triangle of error ; and if outside, outside.