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. |
Din interiorul cărții
Rezultatele 1 - 5 din 75
Pagina 23
... appears to me that this case of lines situated in the blue - green , which differ but slightly in wave - length , and whose brightness is so close to the limit of visibility , is precisely the case where the principles of color - vision ...
... appears to me that this case of lines situated in the blue - green , which differ but slightly in wave - length , and whose brightness is so close to the limit of visibility , is precisely the case where the principles of color - vision ...
Pagina 23
... appears to me that this case of lines situated in the blue - green , which differ but slightly in wave - length , and whose brightness is so close to the limit of visibility , is precisely the case where the principles of color - vision ...
... appears to me that this case of lines situated in the blue - green , which differ but slightly in wave - length , and whose brightness is so close to the limit of visibility , is precisely the case where the principles of color - vision ...
Pagina 34
... appear on these photographs as a whole about equally bright , and of about the same intensity as the violet image 3727. The hydro- gen lines , from Hồ on , appear as a series gradually decreasing in intensity . The series has been ...
... appear on these photographs as a whole about equally bright , and of about the same intensity as the violet image 3727. The hydro- gen lines , from Hồ on , appear as a series gradually decreasing in intensity . The series has been ...
Pagina 35
... appear in the spectra , but these were the only lines measured with certainty on both plates . WAVE - LENGTHS OF LINES IN THE GREAT NEBULA OF ORION . Line and Intensity February 7 February 11 Keeler and Campbell Chief Nebular ( 80 ) ...
... appear in the spectra , but these were the only lines measured with certainty on both plates . WAVE - LENGTHS OF LINES IN THE GREAT NEBULA OF ORION . Line and Intensity February 7 February 11 Keeler and Campbell Chief Nebular ( 80 ) ...
Pagina 61
... appear in their work , the proof being supplied by a series of observa- tions in which this source of error was completely eliminated . The danger of variation in the intensity of the petroleum flame used for the artificial star was met ...
... appear in their work , the proof being supplied by a series of observa- tions in which this source of error was completely eliminated . The danger of variation in the intensity of the petroleum flame used for the artificial star was met ...
Alte ediții - Afișează-le pe toate
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
Pasaje populare
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.