The Astrophysical Journal, Volumul 10University of Chicago Press, 1899 "Letters to the Editor" issued as Part 2 and separately paged from v. 148, 1967. Beginning in 2009, the Letters published only online. |
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Pagina 42
... vapor in the air of the room at X 6.0 μ and 6.5μ were resolved into numerous sharply defined bands , while between them at X6.26μ was a place without appreciable absorption . The absorption band of carbon dioxide of the air of the room ...
... vapor in the air of the room at X 6.0 μ and 6.5μ were resolved into numerous sharply defined bands , while between them at X6.26μ was a place without appreciable absorption . The absorption band of carbon dioxide of the air of the room ...
Pagina 46
... vapor begins at 5 με . At 6.26μ there is a narrow place between the two bands which shows no absorption in my spectrum , but at which the correction for impurity of spectrum reaches a considerable amount on account of the falling off of ...
... vapor begins at 5 με . At 6.26μ there is a narrow place between the two bands which shows no absorption in my spectrum , but at which the correction for impurity of spectrum reaches a considerable amount on account of the falling off of ...
Pagina 112
... vapor which produces the heavy absorp- tion bands . The case is apparently analogous to that of the Sun's atmosphere , where the hydrogen and calcium extend above the layer of carbon vapor . As one of us has recently shown , this layer ...
... vapor which produces the heavy absorp- tion bands . The case is apparently analogous to that of the Sun's atmosphere , where the hydrogen and calcium extend above the layer of carbon vapor . As one of us has recently shown , this layer ...
Pagina 115
... vapor are attributed by him to an unsymmetrical broadening of the lines toward the red . Gouy 3 similarly noticed shifts of certain definite lines in the spectrum of sodium and sulphur which he vaporized in the But here also the ...
... vapor are attributed by him to an unsymmetrical broadening of the lines toward the red . Gouy 3 similarly noticed shifts of certain definite lines in the spectrum of sodium and sulphur which he vaporized in the But here also the ...
Pagina 117
... vapor are present in the neighbor . hood of the electrodes , the inner and hotter of which gives . broadened and displaced lines , while the outer and cooler gives a normal spectrum with narrow lines , then the portion of the bright ...
... vapor are present in the neighbor . hood of the electrodes , the inner and hotter of which gives . broadened and displaced lines , while the outer and cooler gives a normal spectrum with narrow lines , then the portion of the bright ...
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Termeni și expresii frecvente
absorption aperture apparatus appear astronomers ASTROPHYSICAL JOURNAL axis bands blackening Board of Visitors bolometer bright lines brighter camera carbon catalogue cents chromosphere cluster Coin comparison compound spectrum corona corresponding curve density determined diameter disk displacement eclipse electrodes employed equal error exposure faint stars Fe lacking focal length given gives Harvard College Observatory hydrogen lines inches instrument intensity investigation Keeler Lick Observatory light line of sight luminosity magnitude maximum mean measured mercury vapor Messier 13 metallic meteors micrometer mirror Morris Travers Naval Observatory objective observations obtained orbit oxygen photographs photometric Pickering plate position Potsdam pressure prism Professor radiation rays refractor region ring nebula Scheiner screw slit spark spectra spectrograph spectroheliograph spectroscope stellar telescope temperature tenth-meters tion trum tube University of Chicago Ursae vanadium Variable Stars Variable Velocity visual W. W. Campbell wave-lengths wedge Widely separated Yerkes Observatory
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Pagina 49 - EMGs were sampled with surface electrodes for ten revolutions at the beginning, in the middle and at the end of each work...
Pagina 272 - When an appointment or detail is to be made to the office of astronomical director, director of the Nautical Almanac, astronomer, or assistant astronomer, the board of visitors may recommend to the Secretary of the Navy a suitable person to fill such office, but such recommendation shall be determined only by a majority vote of the members present at a regularly called meeting of the board held in the city of Washington.
Pagina 197 - The officers of the Society shall consist of a President, two Vice Presidents, a Secretary...
Pagina 197 - Society to serve for a period of one year, and two members shall be chosen annually to serve for a period of two years or until their successors are duly elected and qualified.
Pagina 272 - The board of visitors shall prepare and submit to the Secretary of the Navy regulations prescribing the scope of the astronomical and other researches of the Observatory and the duties of its staff with reference...
Pagina 357 - PRINTERS AND BINDERS THE PRINTING OF BOOKS DEMANDING TASTE AND CAREFUL EXECUTION, PRIVATE EDITIONS, COLLEGE CATALOGUES AND ANNUALS A SPECIALTY. WE PRINT MORE FINE BOOKS THAN ALL OTHER HOUSES WEST OF NEW YORK. OUR NEW FACTORY, RUN ENTIRELY BY ELECTRICITY, IS THE MOST ADVANCED PRINTING PLANT IN THE COUNTRY. THE LAKESIDE PRESS BLDG., PLYMOUTH PLACE, COR. POLK, CHICAGO.
Pagina 384 - Sold in quart bottles only, by Druggists and high-class Grocers. Prepared only by Henry B. Platt, Platt Street, New York.