Astronomy and Astro-physics, Band 11Goodsell Observatory, 1892 |
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angle aperture appearance April Astronomical ASTRONOMY AND ASTRO-PHYSICS atmosphere Auriga aurora axis bright lines brilliant chromosphere color comet curve dark lines Decl diameter disc discharge distance disturbance Earth eclipse Ephemeris equation equatorial error exposure faculæ faint February give given grating Harvard College Observatory hydrogen lines inches instrument July June Jupiter Kalocsa Kenwood latitude lens Lick Observatory light limb longitude magnetic magnitude March Mars mass means measures meridian meteors method micrometer Moon motion nebula Nova observations obtained orbit perihelion period phenomena photographs planet plate position pressure prism Professor prominence proper motion radiant region reversed right ascension rotation S. W. BURNHAM satellite seen Sept Sirius slit solar prominences solar spectrum spectra spectroheliograph spectroscope spot star stellar streamers Sun-spots Sun's surface telescope tion Titan transit tube velocity visible wave-length zodiacal light
Beliebte Passagen
Seite 491 - It was impossible on first witnessing an appearance so similar to a sudden conflagration, not to expect a considerable result in the way of alteration of the details of the group in which it occurred ; and I was certainly surprised, on referring to the sketch which I had carefully and satisfactorily (and I may add, fortunately) finished before the occurrence, at finding myself unable to recognise any change whatever as having taken place.
Seite 779 - Sun,' and writes from intimate knowledge. He has studied that great luminary all his life, invented and improved instruments for observing it, gone to all quarters of...
Seite 779 - THE SUN. By CA YOUNG. Ph. D., LL. D., Professor of Astronomy in the College of New Jersey. With numerous Illustrations. 12mo. Cloth, $2.00. " Professor Young is an authority on ' The Sun,' and writes from intimate knowledge.
Seite 610 - May not the periodicity of sun-spots and the connection between two such dissimilar phenomena as spots on the Sun and magnetic disturbances on the Earth be due to a periodically recurring increase in the electric conductivity of the parts of space surrounding the Sun ? Such an increase might be produced by meteoric matter circulating around the Sun.
Seite 681 - ... to be the property of the fortunate finder instead of the owner of the soil, if the rule contended for is to obtain? It is not easy to understand why stones or balls of metallic iron, deposited as this was, should be governed by a different rule than obtains from the deposit of boulders, stones, and drift upon our prairies by glacier action ; and who would contend that these deposits from floating bodies of ice belong, not to the owner of the soil, but to the finder?
Seite 681 - ... considered, ranging as it may from 35° or 40° to 104° F. according to the reducing agent employed. I have had occasion to look up the processes published from time to time ; some of these are of sufficient interest to be given briefly. Baron Liebig found in 1835 that on heating aldehyde with an ammoniacal solution of nitrate of silver in a glass vessel a brilliant deposit of metallic silver was deposited on the surface of the glass. To this observation is due the modern process of silvering...
Seite 704 - Catalogue of 6415 Stars for the epoch 1870, deduced from Observations made at the Glasgow University Observatory during the years 1860 to 1881, preceded by a Synopsis of the Annual Results of each Star arranged in the order of Right Ascension.
Seite 436 - Planets," which he read before the Royal Society of Edinburgh at the beginning of the year 1880, predicted with considerable confidence that one or two such planets exist, and in the paper referred to he gave very fully his reasons. The prediction was based upon the recorded positions of the aphelia of a number of comets. He said,* " That there could be no longer a doubt but that two planets revolve in orbits external to that of Neptune, one about 100 times, the other about 300 times the distance...
Seite 339 - An observation very important in its bearing upon the future development of the study of the surface of the sun is mentioned at the end of this brief paper. Referring to the fact that the calcium lines H and K were both reversed, as constantly as h or C when the seeing was good, he adds : "They were also found to be regularly reversed upon the body of the sun itself, in the penumbra and immediate neighborhood of every important spot.
Seite 783 - Joseph line has taken equal rank with the older lines leading to and from the Southwest. On all its through lines of travel the Chicago, Milwaukee & St. Paul Railway runs the most perfectly equipped trains of Sleeping, Parlor and Dining Cars and Coaches. The through trains on all its lines are systematically heated by steam. No effort is spared to furnish, the best acommodations for the least money, and, in addition, patrons of the road are sure of courteous treatment from its employes. JACKSONVILLE...