The Moon: A Popular TreatiseD. Appleton, 1918 - 248 Seiten |
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Häufige Begriffe und Wortgruppen
Apennines appears Aristarchus astronomers atmosphere attraction border bright brilliant Bullialdus central peak Clavius companion conspicuous Copernicus crater pits crater ring crescent Cyrillus dark diagram disk distance earth east eastern eastward eclipse edge face fact farther formations Full Moon globe graph half illuminated imagination immense inhabitants interesting interior lava libration light look lunar volcanoes lunar world Mare Crisium Mare Frigoris Mare Humorum Mare Imbrium Mare Nectaris Mare Nubium Mare Serenitatis Mare Tranquillitatis Mare Vaporum Maurolycus miles in diameter Moon Maiden MOON'S AGE moun named night objects observe ocean Oceanus Procellarum once orbit oval perceive phase photograph picture rays remarkable replied Riccioli ring mountain ring plains rising seen shadow shore small craters strait sunlight surface tains telescope tell terminator Theophilus things tides tion Tycho valley visible volcanoes walled plain western side western wall Yerkes Observatory
Beliebte Passagen
Seite 18 - And show me how they calculated the initiatory speed of our car?" "Yes, my worthy friend; taking into consideration all the elements of the problem, the distance from the center of the earth to the center of the moon...
Seite i - Cloth, $1.50 net ; postage 12 cents additional. This well known and widely popular writer on science has avoided technicalities, while endeavoring to present all the most essential facts known about the moon. This is the first time, as far as the author is aware, that a series of lunar photographs, showing our satellite in its varying aspects from new to old moon, has been presented in a book. The reader is enabled to place himself, as it were, in an observatory of the first rank for a whole month.
Seite 54 - ... of the inclination of the moon's orbit to the plane of the ecliptic.
Seite 168 - What causes the sun to appear to rise In the east and set In the west?
Seite 19 - ... eclipse, but the principal eclipses are those of the sun and the moon. An eclipse of the moon is an obscuration of the light of the moon occasioned by the interposition of the earth between the sun and the moon; consequently all eclipses of the moon happen at full moon; for it is only when the moon is on that side of the earth which is turned away from the sun, and directly opposite, that it can come within the earth's shadow. Further, the moon must at that time be in the same plane as the earth's...
Seite 7 - It is the time that elapses from one New Moon to the next, or from one Full Moon to the next which now concerns us, and it amounts, on the average, to twenty-nine days, twelve hours, forty-four minutes.
Seite 221 - It is, I believe, more active than any area of similar size upon the earth. There seems to be no evidences of lava, but the white streaks indicate apparently something analogous to snow or clouds. There must be a certain escape of gases, presumably steam and carbonic acid, the former of which, probably, aids in the production of the white...
Seite 13 - Sun in the direction of the resultant (of the velocities of the propagation of light and that of the motion of the Earth in its orbit around the Sun).
Seite 54 - Venus, the inclination of her axis of rotation to the plane of her orbit is too slight, and must give rise to great and trying changes of temperature.
Seite 31 - Since the force of attraction on the moon is only one sixth as great as it is on the earth, the weight of all bodies is in the same proportion.