Publications of the Astronomical Society of the Pacific, Volumes 39-40Astronomical Society of the Pacific., 1927 - Astronomy |
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Common terms and phrases
A. L. BLACK appear Astronomical Society atmosphere atoms bands bright Bruce Medal C. H. ADAMS C. S. CUSHING California Cepheid variables cometary curve December determined diameter Director distance double star eclipse emission faint fainter instrument intensity investigations ionized J. H. MOORE July June Jupiter latitude lectures Lick Observatory light lines longitude magnetic magnitude Mars mean motion measures Milky mirror Moon Mount Hamilton Mount Wilson Observatory nebulae nucleus observations orbit P. W. MERRILL Pacific parallax perihelion period photographs planet planetary plates polarity present Professor proper motion Publications R. G. AITKEN radial velocities reflector region right ascension San Francisco slit solar spectra spectral class spectral type spectrograph spectroscopic spectrum spot stellar sun-spot telescope temperature tion ultra-violet variable variable stars wave-lengths Yerkes Observatory βγ βρ вр
Popular passages
Page 294 - ... farthing for the first nail, two for the second, four for the third, and so on to the twenty-fourth.
Page 386 - If seven maids with seven mops Swept it for half a year, Do you suppose,' the Walrus said, 'That they could get it clear?' 'I doubt it,' said the Carpenter, And shed a bitter tear.
Page 153 - I now design to suppress. Philosophy is such an impertinently litigious Lady, that a man had as good be engaged in lawsuits, as have to do with her. I found it so formerly, and now I am no sooner come near her again, but she gives me warning.
Page 193 - Dishevelled atoms tear along at 50 miles a second, with only a few tatters left of their elaborate cloaks of electrons torn from them in the scrimmage. The lost electrons are speeding a hundred times faster to find new restingplaces Look out!
Page 136 - But only for an instant. Barely has the atom arranged the new scalp on its girdle when a quantum of aether waves runs into it. With a great explosion the electron is off again for further adventures. Elsewhere two of the atoms are meeting full tilt and rebounding, with further disaster to their scanty remains of vesture. As we watch the scene we ask ourselves; can this be the stately drama of stellar evolution? It is more like the jolly crockery-smashing turn of a music-hall. The knockabout comedy...
Page 194 - In ancient days two aviators procured to themselves wings. Daedalus flew safely through the middle air and was duly honored on his landing. Icarus soared upwards to the sun till the wax melted which bound his wings and his flight ended in fiasco. In weighing their achievements, there is something to be said for Icarus. The classical authorities tell us that he was only 'doing a stunt...
Page 284 - Instead of the circular hole, 'tis better to substitute an oblong hole, shaped like a long parallelogram, with its length parallel to the prism. For if this hole be an inch or two long and but a tenth or twentieth part of an inch broad or narrower, the light of the image will be as simple as before, or simpler, and the image will become much broader and therefore more fit to have experiments tried in its light than before.
Page 135 - We started to explore the inside of a star; we soon find ourselves exploring the inside of an atom. Try to picture the tumult ! Dishevelled atoms tear along at 50 miles a second with only a few tatters left of their elaborate cloaks of electrons torn from them in the scrimmage.
Page 358 - The strength of the enhanced lines in the red giants suggests that they are produced largely in extensive chromospheres supported by radiation pressure. (5) The amount of metallic vapor above equal areas of the photosphere in the cooler...
Page 194 - The classical authorities tell us that he was only ' doing a stunt ', but I prefer to think of him as the man who brought to light a serious constructional defect in the flying-machines of his day.