The Elements of Geodetic Astronomy: For Civil EngineersComet Press, 1904 - 136 Seiten |
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The Elements of Geodetic Astronomy: For Civil Engineers Henry Curwen Lord Keine Leseprobe verfügbar - 2015 |
The Elements of Geodetic Astronomy: For Civil Engineers Henry Curwen Lord Keine Leseprobe verfügbar - 2018 |
The Elements of Geodetic Astronomy: For Civil Engineers Henry Curwen Lord Keine Leseprobe verfügbar - 2017 |
Häufige Begriffe und Wortgruppen
adjustment altitude American Ephemeris apparent noon apparent place apparent solar arc AL2 astronomical average azimuth barometer bisect bubble called celestial sphere chronometer circle end circle left circle reading circle right co-ordinates collimation compute correction cos² cosec declination difference distant mark earth earth's axis east ecliptic Emerson McMillin Observatory Ephemeris equation example eye-piece formula fundamental plane given gives horizontal axis hour circle index arm index error instrument latitude level readings longitude Lyræ mean noon measured meridian method micrometer nutation Observing Program parallax perpendicular plane plumb line Polaris pole position precession proper motion quantity Reduction refraction right ascension rotate screws sextant sidereal interval sin² star striding level subtract sun's hour angle telescope theodolite tion transit triangle vernal equinox vernier vertical circle Washington apparent Washington mean whence wire zenith distance
Beliebte Passagen
Seite 11 - Law: cos a = cos b cos c + sin b sin c cos A cos b = cos c cos a + sin c sin a cos B cos c = cos a cos b + sin a sin b cos C cos A = -cos B...
Seite 18 - A falls on a plane boundary between two homogeneous media 1 and 2 the ratio of the sine of the angle between the normal to the incident wave and the normal to the surface bears a constant ratio to the sine of the angle between the normal of the refracted wave and the surface normal.
Seite 10 - The demonstration is very simple ; in fact we have sin b sin c + cos b cos c cos A = sin b sin c (sina A + cos'2 A) + cos b cos c cos A = sin b sin c sin2 A + cos A (cos b...
Seite 4 - The hour angle of a point is the angle at the pole between the meridian and the hour circle passing through the point, or it may be defined as the arc of the equator intercepted by these two circles.
Seite 31 - The declination of a star is its angular distance north or south of the celestial equator, measured along the hour circle through the star. Its right ascension is the angular distance along the celestial equator, from a fixed point called the vernal equinox to the foot of the hour circle through the star. Because of the relative motion of the star and the solar system, and the precession and nutation of the equinoxes, these quantities change slowly from year to year, and because of the motion of...
Seite 84 - Greenwich, England, is almost universally used for this purpose. 2. Any meridian in any coordinate system used as an origin for measurement of longitude. prime vertical. The vertical circle through the east and west points of the horizon. It may be true, magnetic, compass, or grid depending upon which east or west points are involved. Also called prime vertical circle. prime vertical circle — prime vertical.
Seite 58 - And the almost invariable practice of entering in auction catalogues the day of the week as well as that of the month...
Seite 18 - Laws When a beam of light passes between two isotropic media, the incident and refracted rays and the normal to the surface lie in the same plane. The incident and refracted rays lie on opposite sides of the surface, and the sines of their angles of inclination bear a constant ratio depending on the media used. Descartes...
Seite 37 - S was given two trials of persistence, one with the right hand and the other with the left hand, at his two-thirds settings on the dynamometer.