The Observatory, Volume 47Editors of the Observatory, 1924 Some vols. for 1886- include a special issue: Annual companion to the Observatory. |
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Common terms and phrases
absolute magnitude absorption absorption-lines appeared astrographic Astronomer Royal Astronomical Society atmosphere atoms B-type bright lines BRITISH ASTRONOMICAL ASSOCIATION calcium Catalogue centre cloud Comet curve density determination diameter disc discussion double stars Earth eclipse Eddington effect electrons error faculæ faint flocculi flocculus galactic geoid give given Greenwich Herschel hydrogen hydrogen lines instrument interest ionization latitude limb longitude magnetic Mars mass mean measures meeting meridian meridian circle meteorological meteors method minor planets mirror Moon Mount Wilson nebulæ Nova observations Observatory obtained orbit paper parallaxes parsecs period photographic planets Plaskett plates position possible present President pressure probably Prof proper motions proper-motions radial velocities radiation reference refractor relative right ascension rotation slide solar spectra spectral type spectroscopic spectrum spiral nebulæ spots stellar suggested sun-spots Sun's telescope temperature theory variable stars variation wave-length XLVII zone
Popular passages
Page 105 - He made an instrument to know If the moon shine at full or no ; That would, as soon as e'er she shone, straight Whether 'twere day or night demonstrate ; Tell what her d'ameter to an inch is, And prove that she's not made of green cheese.
Page 105 - Sept. 10th, my dream of being naked, and my skyn all overwrowght with work like some kinde of tuft mockado, with crosses blew and red ; and on my left arme, abowt the arme, in a wreath, this word I red — sine me nihil potestis facere : and another the same night of Mr.
Page 245 - I may well be permitted to surmise, that the same causes may probably have the same effect on the globe of Mars ; that the bright polar spots are owing to the vivid reflection of light from frozen regions, and that the reduction of those spots is to be ascribed to their being exposed to the sun.
Page 247 - ... which we are locally accustomed, is, as Flammarion happily expresses it, to argue, not as a philosopher, but as a fish. To sum up, now, what we know about the atmosphere of Mars: we have proof positive that Mars has an atmosphere; we have reason to believe that this atmosphere is very thin, - thinner at least by half than the air upon the summit of the Himalayas, - that in constitution it does not differ greatly from our own, and that it is relatively heavily charged with water vapor.
Page 289 - Though you through the regions of space should have travelled, And of nebular films the remotest unravelled, You'll find, though you tread on the bounds of infinity, That God's greatest work is the Master of Trinity.
Page 370 - Madrid, and a resolution expressing appreciation of the work carried out in the past by the department of Terrestrial Magnetism and Atmospheric Electricity of the Carnegie Institution of Washington, and also expressing a hope that the future activities of that department would be unhampered.
Page 321 - Observatory who will, by my inclosing a remittance and the hour of my birth, give me to understand who is to be my wife? An early answer, stating all particulars, will oblige," &c. This sketch descriptive of its real duties and uses are not necessary to relieve the Greenwich Observatory from the charge of being an abode of sorcerers and astrologers.
Page 246 - The observation of the geminations is one of the greatest difficulty, and can only be made by an eye well practised in such work, added to a telescope of accurate construction and of great power. This explains why it is that it was not seen before 1882. In the ten years that have transpired since that time it has been seen and described at eight or ten observatories. Nevertheless, some still deny...
Page 139 - system, the parts of which are free to move or to be at rest, ' and which are governed by the usual laws of gravitation, the * instant that any one of them is in motion, the others cannot
Page 104 - Most honoured Sir, understanding that there are several hands wanted in your honour's department, I beg to offer you my hand. As to my adjustments. I appeared for the Matric.