On the Connexion of the Physical SciencesJ. Murray, 1858 - 523 pages |
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Page 43
... object is found . The angle under which the base of the triangle is seen from the object is the parallax of that object . It evidently in- creases and decreases with the distance . Therefore the base must be very great indeed to be ...
... object is found . The angle under which the base of the triangle is seen from the object is the parallax of that object . It evidently in- creases and decreases with the distance . Therefore the base must be very great indeed to be ...
Page 52
... object may be found , if two observers under the same meridian , but at a very great distance from one another , observe its zenith distances on the same day at the time of its passage over the meridian . By such contemporaneous ...
... object may be found , if two observers under the same meridian , but at a very great distance from one another , observe its zenith distances on the same day at the time of its passage over the meridian . By such contemporaneous ...
Page 53
... object of Cook's first voyage . The transit lasted about six hours at Tahiti , and the difference in duration at these two stations was eight minutes ; whence the sun's horizontal parallax was found to be 8 ′′ -72 . But by other ...
... object of Cook's first voyage . The transit lasted about six hours at Tahiti , and the difference in duration at these two stations was eight minutes ; whence the sun's horizontal parallax was found to be 8 ′′ -72 . But by other ...
Page 54
... object to a body so remote as either Uranus or Neptune . Yet man , the inhabitant of the earth , soars beyond the vast dimensions of the system to which his planet belongs , and assumes the diameter of its orbit as the base of a ...
... object to a body so remote as either Uranus or Neptune . Yet man , the inhabitant of the earth , soars beyond the vast dimensions of the system to which his planet belongs , and assumes the diameter of its orbit as the base of a ...
Page 57
... object . In order to ascertain the mean density of the earth still more perfectly , Mr. Airy made a series of experiments to compare the simultaneous oscillations of two pendulums , one at the bottom of the Harton coal - pit , 1260 feet ...
... object . In order to ascertain the mean density of the earth still more perfectly , Mr. Airy made a series of experiments to compare the simultaneous oscillations of two pendulums , one at the bottom of the Harton coal - pit , 1260 feet ...
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Common terms and phrases
61 Cygni action appears atmosphere attraction bismuth bodies cause centre centrifugal force chemical colour comet consequently copper crystal dark degree density diamagnetic diameter diminishes direction disturbing double stars earth ecliptic effect electricity equal equator ethereal medium excentricity Fcap force glass gravitation greater heat hemisphere increase intensity Jupiter latitude length light lines liquid longitude luminous lunar magnetic major axis mass meridian metallic miles moon motion move nearly nebula nodal lines nodes northern hemisphere NOTE nutation observed optic axis orbit oscillations parallax paramagnetic particles passing perihelion periodic phenomena planets plate polarized pole position Post 8vo produced quantity rays reflected refraction refrangible revolution revolving right angles rings rotation round satellites Sir John Herschel solar spectrum space stars substances sun's surface telescope temperature terrestrial tion tourmaline transmitted tricity undulations Uranus vapour variation velocity vibrations Vols Voltaic waves wire Woodcuts