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 2
... error in x as 0.01 kilometers per second . It is interesting to note that the first term in the above expression for x is what would have resulted from the assump- tion of a circular orbit for the Earth . That is , although the Earth's ...
... error in x as 0.01 kilometers per second . It is interesting to note that the first term in the above expression for x is what would have resulted from the assump- tion of a circular orbit for the Earth . That is , although the Earth's ...
Pagina 3
... error of 0.01 " in this constant corresponds to a maximum error of 0.034 kilometers per second in the correction to an observed velocity . Had a different parallax been employed the only effect upon these tables would have been the ...
... error of 0.01 " in this constant corresponds to a maximum error of 0.034 kilometers per second in the correction to an observed velocity . Had a different parallax been employed the only effect upon these tables would have been the ...
Pagina 28
... error of about 2 ' in each coördinate . The trail on Nov. 15 , No. VIII , devi- ates considerably , but diagram B shows that this deviation is due mainly to the change of position of the Earth . THE DIRECT CONCAVE GRATING SPECTROSCOPE ...
... error of about 2 ' in each coördinate . The trail on Nov. 15 , No. VIII , devi- ates considerably , but diagram B shows that this deviation is due mainly to the change of position of the Earth . THE DIRECT CONCAVE GRATING SPECTROSCOPE ...
Pagina 28
... error of about 2 ' in each coördinate . The trail on Nov. 15 , No. VIII , devi- ates considerably , but diagram B shows that this deviation is due mainly to the change of position of the Earth . THE DIRECT CONCAVE GRATING SPECTROSCOPE ...
... error of about 2 ' in each coördinate . The trail on Nov. 15 , No. VIII , devi- ates considerably , but diagram B shows that this deviation is due mainly to the change of position of the Earth . THE DIRECT CONCAVE GRATING SPECTROSCOPE ...
Pagina 36
... might seem to be a valuable way in finding motion in the line of sight . Practically , however , it is not . The method is a differential one , and the small errors in setting made in the measurements are sufficient 36 S. A. MITCHELL.
... might seem to be a valuable way in finding motion in the line of sight . Practically , however , it is not . The method is a differential one , and the small errors in setting made in the measurements are sufficient 36 S. A. MITCHELL.
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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.
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