A History of the Determination of the Figure of the Earth from Arc MeasurementsDavis Press, 1906 - 168 pages |
Other editions - View all
A History of the Determination of the Figure of the Earth from ARC Measurements Arthur Dexter Butterfield No preview available - 2015 |
A History of the Determination of the Figure of the Earth From Arc ... Arthur D. Butterfield No preview available - 2015 |
Common terms and phrases
aligned amplitude Andrate ARC MEASUREMENT axis azimuth base apparatus base line base was measured bases measured Beccaria's Bessel Bougeur brass standard Cape chain computed Condamine correction Damargida degree equal Delambre determined diameter Dunkirk earth Eratosthenes errors Everest fathoms feet in radius foot Formentera frame French gave giving I degree graduated horizontal Hounslow Heath inches instrument iron Kaliana Kalianpúr la Condamine Lacaille Lacaille's Lambton Lapland latitude London Lough Foyle marked Maupertuis means measuring rods meridian arc meridian circle meridian distance method metres micrometer microscopes northern observations Observatory obtained Paris Perpignan Peru Picard placed plumb-line Posidonius quadrant Ramsden reading reduced remeasured Royal scale screw sea level signals spheroid stars Struve Svanberg taken telescope temperature Tenner theodolite thermometer Thomas Maclear tion toises toises in length Tornea triangulation Trigonometrical Survey vernier vertical circle wooden rods Zach zenith distances zenith sector
Popular passages
Page 10 - Yet having made Observation at York, as aforesaid, I measured (for the most part) the Way from thence to London; and where I measured not, I paced, (wherein through Custom I usually come very near the Truth) observing all the way as I came with a Circumferentor all the principal Angles of Position, or Windings of the Way, (with convenient allowance for other lesser Windings, Ascents and Descents) . . .; so that I may affirm the Experiment to be near the Truth.
Page 164 - De las quales se deduce la figura, y magnitud de la tierra, y se aplica a la navegación. Impresso de orden del Rey nuestro Señor en Madrid Por Juan de Zuñiga, Año MDCC.XL.VIII.
Page 165 - Recueil d'observations géodésiques , astronomiques et physiques, exécutées par ordre du Bureau des longitudes de France, en Espagne, en France, en Angleterre et en Ecosse, pour...
Page 167 - An Account of the Measurement of two Sections of the Meridional Arc of India, bounded by the Parallels of 18° 3' 15", 24° 7' 11", 29a 30
Page 165 - Dixon for determining the Length of a Degree of Latitude in the Provinces of Maryland and Pennsylvania, in North America ; by the Reverend Nevil Maskelyne, BDFRS Astronomer Royal.2 Art.
Page 167 - Ordnance Survey. An Account of the Measurement of the Lough Foyle Base in Ireland with its verification and extension by triangulation : together with the various methods of computation followed on the Ordnance Survey, and the Requisite Tables.
Page 10 - ... the same, without any sensible difference ; and because these Altitudes differ but little, we shall not need to make any alteration or allowance, in respect of Declination, Refraction, or Parallax : Wherefore subtracting the lesser apparent Altitude, namely 59 deg. 33 min. from the greater 62 deg. 1 min. there remains 2 deg. 28 min. which is the difference of Latitude of these two Cities, namely, of London and York.
Page 9 - Upon the \\th of June, 1635, I made an Observation near the middle of the City of York, of the Meridian Altitude of the Sun, by an Arch of a Sextant of more than 5 Foot Semidiameter, and found the apparent Altitude of the Sun that Day at Noon to be 59 deg. 33 min. I had also formerly upon the llth of June, Anno 1633, observed in the City of London, near the Tower, the apparent Meridian Altitude of the Sun, and found the same to be 62 deg.
Page 166 - An Account of the Measurement of an Arc of the Meridian, extending from Dunnose, in the Isle of Wight, Latitude 50° 37
Page 167 - Verification and Extension of La Caille's Arc of Meridian at the Cape of Good Hope, by Sir Thomas Maclear, Astronomer Royal at the Cape of Good Hope.