Handbook of Astronomy |
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Page vi
... pass through their educational course without acquiring even a general know- ledge of geometry and algebra . To all such persons , mathe- matical treatises on astronomy must be sealed books . Such students , notwithstanding their ...
... pass through their educational course without acquiring even a general know- ledge of geometry and algebra . To all such persons , mathe- matical treatises on astronomy must be sealed books . Such students , notwithstanding their ...
Page 3
... passing directly from the eye of the observer to the point to be observed . If the eye were supplied with the appendages necessary to record and measure the directions of visible objects , this would be true , and the organ of sight ...
... passing directly from the eye of the observer to the point to be observed . If the eye were supplied with the appendages necessary to record and measure the directions of visible objects , this would be true , and the organ of sight ...
Page 4
... pass through the object s . But since the field of view of the telescope is a circular space of definite extent , within which many objects in different directions may at the same time be visible , some expedient is necessary by which ...
... pass through the object s . But since the field of view of the telescope is a circular space of definite extent , within which many objects in different directions may at the same time be visible , some expedient is necessary by which ...
Page 6
... passing through its centre and at right angles to it . At right angles to the axis of the telescope are two arms ... passes before the index . Such a combination is represented in section in fig . 4 , where T is the telescope , p the ...
... passing through its centre and at right angles to it . At right angles to the axis of the telescope are two arms ... passes before the index . Such a combination is represented in section in fig . 4 , where T is the telescope , p the ...
Page 8
... pass successively through the points whose distance is to be observed . 18. The parallel wire micrometer.- One of the forms of micrometric apparatus used for this purpose is represented in trans- verse section in fig . 6. This , which ...
... pass successively through the points whose distance is to be observed . 18. The parallel wire micrometer.- One of the forms of micrometric apparatus used for this purpose is represented in trans- verse section in fig . 6. This , which ...
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Common terms and phrases
altitude aphelion apparent diameter apparent magnitude apparent motion appear ascertained Astronomer Royal astronomical atmosphere attraction axis azimuth bodies C. H. F. Peters celestial equator celestial sphere centre circle clock comet conjunction density determined direction disk diurnal diurnal motion earth ecliptic edge effect elongation Engineering equal equatorial equinoxial points excentricity feet firmament fixed globe greater greatest Greenwich heavens hemisphere Herschel horizon increase inferior conjunction inferior planet instrument interval Jupiter latitude length less light line of collimation longitude lunar mass mean distance measured meridian moon moon's move nearly nebula object Observatory observed orbit parallax pendulum perihelion period phenomena planet Plate polar pole position prime vertical produced ratio represented revolution revolve right angles right ascension ring rotation satellites Saturn seen sidereal solar system sphere spots stars sun's superior conjunction supposed surface synodic period telescope terrestrial tion transit Uranus velocity visible visual wires zenith
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