The Earth: Its Shape, Size, Weight and SpinCambridge University Press, 22 mar 2012 - 150 pagine Originally published during the early part of the twentieth century, the Cambridge Manuals of Science and Literature were designed to provide concise introductions to a broad range of topics. They were written by experts for the general reader and combined a comprehensive approach to knowledge with an emphasis on accessibility. The Earth by J. H. Poynting was first published in 1913. The volume contains an account of the size, shape and movement in space of the Earth, avoiding complicated mathematical detail. |
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angle apparatus attracted masses attracting spheres axis base-line beam body bulge calculated Cavendish Cavendish experiment centre of gravity circles round clock common centre deflection diameter direction disc distance due north Earth and Moon earth-pull Earth's surface effect equal equator equatorial exactly experiment feet fixed stars flat Earth force friction George Darwin globe greater gyroscope inch latitude length Let us suppose Lough Foyle mean density measured ment meridian method million Moon Moon's motion mountain move round nearer nearly Newton observed once in 24 opposite orbit Ordnance Survey pans pendulum perpendicular plane plumb line point of Aries pole height pole star position pound proportional pull radius rotation round the Sun Sandwick Schiehallion seen side sky pole speed spin round station steamer swing telescope temperature theodolite tides tilt torsion balance torsion rod triangle velocity vertical vibration weight wind wire zenith