Leveling: Barometric, Trigonometric and SpiritD. Van Nostrand, 1887 - 145 Seiten |
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accuracy accurate adjustment aneroid angle approximate atmosphere backsight barome barometric formula Bessemer process boiling brass bubble cistern cloth coefficient of refraction computed correction deduced density determined difference of altitude difference of elevation difference of level diurnal edition eleva eliminate ence Engineering equilibrium Errors due feet formula geodesic leveling Gilbert gradient Guyot's Collection heat height horizontal hygrometer hypsometric Illustrated inch instru instrument ivory point justment l-log length of sight line of sight lower station mean measured ment mercurial barometer meters method micrometer moisture morocco Noah Porter NOSTRAND'S PUBLICATIONS observations Ordnance Survey perature Plantamour's plates pressure Prof scale screw self-reading servations source of error spirit level static equilibrium statical formulæ stratum strument surface tables tance target telescope temperature temperature and humidity term thermometer tical tion trigono tube ture U. S. C. S. Report U. S. Lake Survey variation Williamson zenith distances
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