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 40
Pagina
... OXYGEN IN THE ATMOSPHERES OF CER- TAIN FIXED STARS . David Gill MINOR CONTRIBUTIONS AND NOTES : Corrections to Determinations of Absolute Wave - length , Edwin B. Frost , 283 ; Position of Nova Sagittarii , Edward C. Pickering , 285 ...
... OXYGEN IN THE ATMOSPHERES OF CER- TAIN FIXED STARS . David Gill MINOR CONTRIBUTIONS AND NOTES : Corrections to Determinations of Absolute Wave - length , Edwin B. Frost , 283 ; Position of Nova Sagittarii , Edward C. Pickering , 285 ...
Pagina 74
... oxygen . A few liters of this supply were set apart and from the rest the oxygen was removed partly by metallic copper and partly by pyrogallic acid . I have to thank Professor Eschweiler for helping me in some of these operations ...
... oxygen . A few liters of this supply were set apart and from the rest the oxygen was removed partly by metallic copper and partly by pyrogallic acid . I have to thank Professor Eschweiler for helping me in some of these operations ...
Pagina 75
... oxygen that had been set apart and sparked for several days over a weak solution of potash . The last sparking was done with a surplus of oxygen until no further appreciable con- traction took place and no traces of nitrogen lines were ...
... oxygen that had been set apart and sparked for several days over a weak solution of potash . The last sparking was done with a surplus of oxygen until no further appreciable con- traction took place and no traces of nitrogen lines were ...
Pagina 76
... it most likely that there is a combination of argon and carbon that is able to resist the sparking with oxygen . I noticed that the carbon bands are to be seen on photographs that F. Paschen and myself have taken of the red 76 C. RUNGE.
... it most likely that there is a combination of argon and carbon that is able to resist the sparking with oxygen . I noticed that the carbon bands are to be seen on photographs that F. Paschen and myself have taken of the red 76 C. RUNGE.
Pagina 77
... oxygen over a solution of potash , nevertheless the carbon was not removed . The cyanogen bands also made their appearance in the krypton vacuum tube and all the lines of the red spectrum of argon . Besides I noticed some other bands of ...
... oxygen over a solution of potash , nevertheless the carbon was not removed . The cyanogen bands also made their appearance in the krypton vacuum tube and all the lines of the red spectrum of argon . Besides I noticed some other bands of ...
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.