The Observatory, Volumen38Editors of the Observatory, 1915 Some vols. for 1886- include a special issue: Annual companion to the Observatory. |
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Términos y frases comunes
61 Cygni appear Astrographic Catalogue Astronomer Royal Auwers bright Catalogue centre cluster comet Crommelin Cygni d h d h d h density determined discussion distance double stars E. W. Maunder Earth eclipse Eddington equator equatorial faint Father Cortie geoid give Greenwich heliometer images instrument interesting isostasy July June Jupiter large number latitude Leonids Lick Observatory lines longitude luminosity magnitude mass mean measures Meeting Melotte meridian meteors method miles Moon motion nebula observations obtained orbit paper parallax period Perseids photographs planets plates position possible present President probable error Prof proper-motions radial velocities radiant remarkable right ascension rotation Royal Observatory satellites Saturn Sept Sir F. W. Dyson solar spectra spectral type spectrum stellar sun-spot Sun's surface Tauri telescope theory Turner variable stars Wolf-Rayet stars XXXVIII zone
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Página 257 - Of Europe, keep our noble England whole, And save the one true seed of freedom sown Betwixt a people and their ancient throne, That sober freedom out of which there springs Our loyal passion for our temperate kings ; For, saving that, ye help to save mankind...
Página 151 - I see at her starry loom, and the Ox that grazes on the farther shore; — and I know that the falling dew is the spray from the Herdsman's oar.
Página 358 - T-CV(, of that of Saturn. On the ground of this great difference between the relative magnitudes of all other satellites and of the moon, it is not unreasonable to suppose that the mode of separation of the moon from the earth may also have been widely different. The theory of which I shall have next to speak claims to trace the gradual departure of the moon from an original position not far removed from the present surface of the earth. If this view is correct, we may suppose that the detachment...
Página 408 - We have high, towers, the highest about half a mile in height, and some of them likewise set upon high mountains, so that the vantage of the hill with the tower is, in the highest of them, three miles at least. And these places we call the upper region; accounting the air between the high places and the low as a middle region.
Página 220 - It is an invariable law when a ball strikes a cushion that the angle of reflexion is always equal to the angle of incidence ; but at the same time you must remember that the angle is altered by any side or screw put on the ball, and that cushions vary somewhat in elasticity.
Página 242 - Stars being the most conspicuous in Heaven, are in all probability nearest to the Earth, and if they have any particular Motion of their own, it is most likely to be perceived in them...
Página 290 - the number of stellar parallaxes that can be determined per annum, will in the long run be about equal to the number of clear nights available for the work." With the heliometer at least ten times as much time would have been required. During the last year two further instalments of the results of the Yerkes Observatory have been published by Slocum and Mitchell, giving the parallaxes of more than fifty stars.
Página 441 - Too much tired to attempt to boil mercury in the tubes to-day. At night, having prepared the instruments to take the immersion of one of Jupiter's satellites, we lay down to rest, but between...
Página 151 - On that night — providing the skies be clear — the birds of heaven make, with their bodies and wings, a bridge over the stream; and by means of that bridge the lovers can meet. But if there be rain, the River of Heaven rises, and becomes so wide that the bridge cannot be formed.
Página 245 - Object would not be the same when the Eye is at Rest, as when it is moving in any other Direction, than that of the Line passing through the Eye and Object ; and that, when the Eye is moving in different Directions, the apparent Place of the Object would be different.