Knowledge & Illustrated Scientific News Volume 2

Knowledge & Illustrated Scientific News Volume 2

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 edition. Excerpt: ...ofthe phenomenon, obtained on the 12th and 13th June, 1904. The instrument used was a 6-inch reflecting telescope, with a spectroscope magnifying 8 diameters, the slit being in the region of the penumbra of a large spot. It was noticed that the faeulze surroundivgthe sunspots were very bright on both days. He suggests that the present appearance of this peculiarity, considered with the above-mentioned observation of Professor Young, appears to indicate that the phenomenon may be characteristic of the period of maximum sunspot actmt" Comet 1905 (a). The following elliptic elements for the orbit of the Comet 1905 (a) have been determined by Herr A. Wedemeycr from a computation of the observations obtained on March 26 at Nice, and on April 8, 28, at Vienna: Ennnnurs. 1905 April 4-0991 Berlin Mean Time. 358" 13' =0" 3) 157 23 27-8-19o5'o 40 I4 334 i 9'9885o6 '4737 P630354 279 years. '6'? man II it It log. Gaunt!-." E..3 ll I11. ll EPHEMERIS FOR 12 H. BERLIN lIlAN TIME. Date. I Right Ascension. Declination. i i T i J h m. s I ' July 1.. 13 20 11 +39 44'! " 3 "i 5 32 32.3; H 5--38 5 3 _ " Z. ' it 11' 35 22-3:11 ' I3 46 10 i +36 119 i Very little has been published since the discovery of the tenth satellite, but the details are now definitely stated in a communication from the Harvard College Observatory. The satellite was discovered by Professor W. H. Pickering at the Harvard College Observatory during the examination of a series of several photographic plates taken with the 24-inch Bruce telescope, selected from the set used in determining the orbit of Phoebe, the ninth satellite. The new satellite was detected on thirteen of these plates, and the previous announcement of the orbital...show more

Product details

  • Paperback | 272 pages
  • 189 x 246 x 14mm | 490g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236933419
  • 9781236933416