Rudimentary Astronomy |
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Page 15
... distance from the pole is called its polar distance . In northern latitudes like our own , this distance is measured , of course , from the North Pole , and is called North Polar distance . 36. Let , for example , s be a star or other ...
... distance from the pole is called its polar distance . In northern latitudes like our own , this distance is measured , of course , from the North Pole , and is called North Polar distance . 36. Let , for example , s be a star or other ...
Page 39
... distance we shall find in the sequel to be about 60 radii of the earth , or ... polar distances . If , then , we have observations made in two observatories ... polar distance considerably in passing from one meridian to another widely ...
... distance we shall find in the sequel to be about 60 radii of the earth , or ... polar distances . If , then , we have observations made in two observatories ... polar distance considerably in passing from one meridian to another widely ...
Page 46
... polar distances absolutely measured . Suppose , for instance , the polar distance of Mars be com- pared , both at Greenwich and the Cape , with that of a neighbouring star , by means of the micrometer attached to a mural circle or an ...
... polar distances absolutely measured . Suppose , for instance , the polar distance of Mars be com- pared , both at Greenwich and the Cape , with that of a neighbouring star , by means of the micrometer attached to a mural circle or an ...
Contents
Early cultivation of the science of astronomy | 1 |
General aspect of the ordinary phenomena of the heavens | 2 |
Apparent revolution of all the heavenly bodies round a fixed axis | 3 |
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61 Cygni aberration accuracy angular distance appeared apsides axis calculated catalogue centre comet computed constellations correction describe determining diameter direction discovered discovery disk disturbing diurnal diurnal motion earth earth's orbit earth's surface ecliptic effect elements elliptic orbit epoch equal equator equatorial equinox error evection excentricity fixed force geocentric gravitation greater number Greenwich heavens Heliometer Hence Herschel horizontal inclination instrument Jupiter Kepler's known latitude longitude lunar orbit magnitude mass mean anomaly mean distance measured meridian micrometer moon moon's moving mural circle nearly Neptune node nutation object observations Observatory Otto Struve parallax perigee perihelion period phenomena planet planetary polar distance pole position precession proper motions quantity radius reader refraction remarkable revolution revolve right angles right ascension round the sun satellites Saturn sidereal sidereal period space stars sun's superior planets supposed syzygy telescope tion transit treatise true anomaly velocity Venus vertical wire zenith distances