Publications of the Astronomical Society of the Pacific, Volumes 29-30Astronomical Society of the Pacific, 1917 |
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Common terms and phrases
60-inch reflector absolute magnitude absorption lines Aitken altho appears Astronomical Society August average axis Berkeley bright bands brighter Bruce Medal California color comet corona curve CUSHING D. S. RICHARDSON determined diameter Director discovery distance Earth east eclipse exposure faint fainter galactic globular clusters Goldendale H. D. CURTIS HARLOW SHAPLEY inches instruments January July June LIBRARY Lick Observatory light luminosity Mars maximum measures medal Messier miles Milky minutes Moon Mount Hamilton Mount Wilson nearly nebulosity noted Nova numbers of stars objects observations Open cluster orbit Pacific parallax period photographic planet planetary plates position probably Professor proper motion Publications radial velocity radiation region San Francisco Shapley Solar Observatory spectra spectral type spectrograph spectroscopic spectrum spiral nebulae stellar sun-spot Sun's surface telescope temperature thru tion University variable stars visible W. W. CAMPBELL wave-length
Popular passages
Page 94 - This world was once a fluid haze of light, Till toward the centre set the starry tides, And eddied into suns, that wheeling cast The planets...
Page 110 - The second annual meeting of the Pacific Division of the American Association for the Advancement of Science will be held this year at Stanford University during the period, April 4 to 7.
Page 245 - That the Conference expresses the hope that, as soon as may be practicable, the astronomical and nautical days will be arranged everywhere to begin at mean midnight.
Page 123 - Bristol, we should hear the same story — the rise and fall of the tide had almost ceased. The ships in dock could not get out; the ships outside could not get in ; and the maritime commerce of the world would be thrown into dire confusion.
Page 117 - The horned Moon, with one bright star Within the nether tip with Blake's manifestoes; but equally, though less obtrusively, with every passage which seems to make a statement, or depend upon an assumption, that a reader may dissent from, without thereby giving proof of mental derangement. It is essential to recognise that the...
Page 20 - The intensity of solar radiation outside the earth's atmosphere at the earth's mean distance from the sun. Recent investigations indicate that this intensity may vary and that its mean value is 1.94 gram-calories per minute per square centimeter of area lying normal to the incident solar ray.
Page 232 - From the middle of the sixteenth century to the middle of the seventeenth...
Page 126 - ... definite manner. And this state of things exists all over the reddishochre regions. All the lines, with the exception of a few that are curved in a regular manner, are absolutely straight from one end to the other. They are arcs of great circles, taking the shortest distance between their termini. The lines are as fine as they are straight. As a rule, they are of scarcely any perceptible breadth, seeming on the average to be less than a Martian degree, or between twenty and thirty miles, wide....
Page 231 - Your theory that the sun is the center of the solar system, and that the earth is a ball which rotates around it, has a very convincing ring to it, Mr. James, but it's wrong. I've got a better theory," said the little old lady. "And what is that, madam?
Page 259 - We must seek out then the nature of these longer rhythms whose very existence was unknown until man by the light of science sought to understand the earth. The larger of these must be measured in terms of the smaller, and the smaller must be measured in terms of years. Sedimentation is controlled by them, and the stratigraphic series constitutes a record, written on tablets of stone, of these lesser and greater waves of change which have pulsed through geologic time.