Manuel d'arpentage et de lever des plansBerger-Levrault, 1873 |
Contents
| 3 | |
| 9 | |
| 15 | |
| 21 | |
| 27 | |
| 44 | |
| 55 | |
| 61 | |
| 181 | |
| 187 | |
| 196 | |
| 204 | |
| 217 | |
| 218 | |
| 224 | |
| 230 | |
| 68 | |
| 81 | |
| 86 | |
| 92 | |
| 98 | |
| 106 | |
| 127 | |
| 137 | |
| 144 | |
| 237 | |
| 249 | |
| 255 | |
| 264 | |
| 270 | |
| 280 | |
| 288 | |
| 295 | |
Common terms and phrases
&c.—Continued altitude angle Arcs of Parallel-Values axis azimuth Barometer chord Chord-deflection chronographs chronometer circumpolar star collimation column Computation corresponding cos² cubic cubic centimetre culmination D₁ declination deflection Degrees of Fahrenheit determined diff Differences of Latitude Distance dm dp dm dp dm dp elongation English inches Fahrenheit Fect Feet FF FF FF formula horizontal hour-angle humidity instrument Intermediate minutes interval Latitude Latitude and Departures-Continued length limb log H Longitude LXIII.-Longitude by Lunar LXVI.-Field Magnetic Observations mean noon mean solar measured meridian Meridional Arcs-Values metre middle wire miles oscillation parallax parallel plane Polaris Polyconic Projection-Co-ordinates prime vertical probable error reduced refraction right ascension sextant sidereal sin² Square root Square Roots-Continued stations T₂ TABLE tan² tangent Tangent-deflection telescope temperature thermometer toise trace Railroad Curves transit wwwww XXIV.-Squares and Square zenith-distance δρ ΙΟ ΙΟΙ бр обо
Popular passages
Page 16 - Statutes the tables in the schedule hereto annexed shall be recognized in the construction of contracts, and in all legal proceedings, as establishing, in terms of the weights and measures now in use in the United States, the equivalents of the weights and measures expressed therein in terms of the metric system...
Page 11 - The units of capacity measure are the gallon for liquid, and the bushel for dry measure. The gallon is a vessel containing 58372.2 grains (8.3389 pounds avoirdupois) of the standard pound of distilled water, at the temperature of maximum density of water, the vessel being weighed in air in which the barometer is 30 inches at 82° Fahrenheit, The.
Page 106 - ... be the corresponding angle, in degrees, at the vertex of the tangent cone, subtended by the developed parallel, then since the angular value of arcs of given lengths...
Page 84 - Ln -el of the Sea. Let— r represent the radius of the earth (or better, the normal, N,) corresponding to the base b at the level of the sea ; and r-\- a the radius referred to the level of the measured base B, then — r+a : r:: B : ¿ = Bx — — r+a and — . B—¿=BB -Ï— = В x («- - "! + etcA r-\-a v...
Page 188 - A pedestal and having a triangular plate of metal, Fig. 1, called the gnomon, rising from its center and inclined toward the meridian line of the dial at an angle equal to the latitude of the place where the dial is to be used. The shadow of the edge of the triangular plate moves around the northern part of the dial from morning to afternoon, and thus supplies a rough measurement of the hour of the day. The style or gnomon, as it always equals the latitude of the place, can be laid out as follows...
Page 25 - The area of each end added to four times the middle area, and the sum multiplied by the length divided by 6, will give the solid content. If the measures used in the calculation are yards, the result will be the content in cubic yards ; but if they are feet, the result must be divided by 27, to obtain the corresponding number of yards. CALCULATION OF THE TRIANGULAR PORTION O.
Page 207 - To find the time ly equal Altitudes of the Sun. Correction in time, to be applied as an equation to the mean of the times of observed equal altitudes of the sun, in order to obtain the time of its meridional passage. -8- -T- / tangD — tangL X ~ 48...
Page 185 - We cannot immediately obtain mean time from observation ; but, from an observation of the true Sun, with the aid of the equation of time, which is the angular distance in time between the mean and the true Sun, we may readily deduce it.
Page 25 - R3 20. Prismoid, or solid figure, similar to that which is formed in excavations or embankments of roads, terminated by parallel cross -sections. Solid- content = area of each end, added to four times the middle area, and the sum multiplied by the length...
Page 23 - B, b; l= the length of one of the oblique sides; and C = the angle between one of these bases and this side. 4. Any quadrilateral = half the product of its two diagonals multiplied by the sine of the included angle.