Journal of the British Astronomical Association, Volumes 35-36British Astronomical Association., 1925 Vol. 53-54 includes prospectus entitled Its Nature, aims and methods. |
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A. C. D. Crommelin A. E. LEVIN absolute magnitude appears April atmosphere Aurora bright brighter British Astronomical Association centre Cepheid clouds colour comet craters Crommelin curve dark Decl density diameter Director disc distance Earth eclipse ephemeris estimates eyepiece faint fainter galactic giants gives globular cluster Goodacre Haroldswick interesting Journal June Jupiter km./sec latitude light lines luminosity lunar magnitude Mars mass maximum mean Meeting Members Messier meteor minima minimum Moon Moon's motion nebula Nova objects observations Observatory obtained occultations open clusters orbit parallax parsecs perihelion period PETER DOIG photographs planet plates President probably Prof radial velocities radiation reflector refractor rotation satellites Section seems seen Shapley slides solar spectra spectral type spectroscopic spectrum spiral spots stellar Sun's sunspots surface telescope temperature theory tion Variable Star Venus VICTORIA EMBANKMENT visible visual ΙΟ
Popular passages
Page 42 - Why, so can I, and so can any man; But will they come when you do call for them...
Page 276 - At that period, and for the space of the next hour, instead of an eclipse, or the umbra of the earth being the cause of the total obscurity of the moon, the whole phase of that body became very quickly and most beautifully illuminated, and assumed the appearance of the glowing heat of fire from the furnace, rather tinged with a deep red. The...
Page 135 - But a more striking fact is that, from the middle of the sixteenth century to the end of the eighteenth...
Page 290 - ... these young suns are really young in years as well as in development ; they are younger than our sun, not because they require longer time intervals for the various stages of their life, but because they began their stellar life later. It should be noticed that the spectra of these bluish-white stars are not all exactly alike. They are distinguished from each other by the greater or less breadth and diffuseness of the lines of hydrogen, and also by various degrees of strength and visibility of...
Page 276 - I have clearly ascertained, that during the whole of the late lunar eclipse of March 19, the shaded surface presented a luminosity quite unusual, probably about three times the intensity of the mean illumination of an eclipsed lunar disc. The light was of a deep red colour. During the totality of the eclipse, the light and dark places on the face of the moon could be almost as well made out as...
Page 276 - ... call your attention to the fact which I have clearly ascertained, that during the whole of the late eclipse of March 19, the shaded surface presented a luminosity quite unusual, probably about three times the intensity of the mean illumination of the eclipsed lunar disc. The light was of a deep red colour. During the totality of the eclipse, the light and dark places on the face of the Moon could be almost as well made out as on an ordinary dull moonlight night, and the deep red colour where...
Page 127 - Some have thought that this experiment only proves that the ether in a certain basement-room is carried along with it. We desire therefore to place the apparatus on a hill to see if an effect can be there detected.
Page 332 - Balance Sheet is properly drawn up BO as to exhibit a true and correct view of the state of the...
Page 125 - His forces were fourteen hundred times as great as mine ; his couples or twisting forces were a hundred and twenty thousand times as great. One advantage gained by the use of small apparatus, in which alone the attracting balls can be made large compared with the length of the beam, is the increased Approximate date.
Page 290 - ... distinctions as these, we may be able to recognize evidence as to the size of a star — that, for instance, a large star in passing through the first stage of stellar life may present characteristics always different in certain respects from those presented by smaller orbs in passing through the same stage. If so, we shall have a new means of dealing with the architecture of the heavens ; for, knowing something of the real size of a star in this way, we may infer its distance from its apparent...