A Handbook of Descriptive and Practical Astronomy: The sun, planets, and cometsClarendon Press, 1889 - Astronomical instruments |
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Page 13
... weeks will commonly be found the usual extent of permanency . Some are formed and vanish during the period of a single semi - rotation ( rather more than 123 ) , others remain during several successive rotations ; for it will be readily ...
... weeks will commonly be found the usual extent of permanency . Some are formed and vanish during the period of a single semi - rotation ( rather more than 123 ) , others remain during several successive rotations ; for it will be readily ...
Page 17
... week without the aid of a telescope . On March 15 , 1858 , the day of the celebrated eclipse , a spot having a breadth from W. to E. of 4 ' , or 108,000 miles , attracted considerable attention . On September 30 , in the same year , one ...
... week without the aid of a telescope . On March 15 , 1858 , the day of the celebrated eclipse , a spot having a breadth from W. to E. of 4 ' , or 108,000 miles , attracted considerable attention . On September 30 , in the same year , one ...
Page 34
... weeks , ) but may vary as much as 2 years either way from this average . Wolf has also considered himself warranted in asserting this law : - " Greater activity in the Sun goes with shorter periods , and less with longer periods " ; and ...
... weeks , ) but may vary as much as 2 years either way from this average . Wolf has also considered himself warranted in asserting this law : - " Greater activity in the Sun goes with shorter periods , and less with longer periods " ; and ...
Page 94
... weeks from Inferior Conjunction . Its apparent diameter is then about 40 " , and the breadth of the illuminated part nearly 10 " , so that rather less than of the entire disc is illuminated ; b Month . Not . , vol . xxxv . p . 347. May ...
... weeks from Inferior Conjunction . Its apparent diameter is then about 40 " , and the breadth of the illuminated part nearly 10 " , so that rather less than of the entire disc is illuminated ; b Month . Not . , vol . xxxv . p . 347. May ...
Page 141
... weeks of wet weather . He alleged that observations extending over 80 years showed this coincidence ' . Bernadin asserts it as a fact that many thunderstorms occur about the period of New or Full Moon . With these possible exceptions it ...
... weeks of wet weather . He alleged that observations extending over 80 years showed this coincidence ' . Bernadin asserts it as a fact that many thunderstorms occur about the period of New or Full Moon . With these possible exceptions it ...
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Common terms and phrases
apparition April astronomers atmosphere axis Berberich bright brilliant C. H. F. Peters calculated centre Chinese obs colour comet appeared comet was seen corona cubits cubits long dark diameter disappeared disc discovered discovery Earth elliptic orbit Encke Encke's comet equator Halley's comet Herschel Hind Inferior Conjunction July July 29 June Jupiter Lassell latitude Leonis light limb longitude luminous lunar Ma-tuoan-lin Mailla March Mars mean distance Mercury meteors miles minor planets Month Moon Moon's motion naked eye nearly Neptune node noticed nucleus observations Observatory Palisa Palisa Vienna parallax passed perihelion period assigned phenomenon Pingré planet radiant rays remarkable ring rotation satellites Saturn Sept shadow shower sidereal division solar solar eclipse spots star Sun-spot Sun's surface tail telescope total eclipse transit Uranus Ursa Ursa Major Venus visible weeks Williams Winnecke Zodiacal Light ΙΟ
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