Monthly Notices of the Royal Astronomical Society Volume . 27-28

Monthly Notices of the Royal Astronomical Society Volume . 27-28

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1867 edition. Excerpt: ...interior crater. Under a power of 500 diameters, with which the measures were made, the boundary of Linne does not end abruptly, but passes gradually into the darker surface of the Mare Serenitatis. The white spot is oblong, but is not a regularly formed oval. At some parts of its outline small projecting portions of the bright surface interrupt the regularity of its figure. The small crater, which appears to be deep, has a narrow margin, brighter than the white spot on which it occurs. The measures of this crater include the narrow, bright margin. Length of the bright spot.... 7-85 Breadth...... 6' 14 Diameter of the small centre.. 171 1866, Dec. 14th. I observed the Moon with a Savart's polariscope attached to the telescope. The coloured bands passed unbroken across Linne, which appeared at the time as a white spot. Also when a double-image prism and plate of quartz were used, Linnewas coloured similarly to the adjoining parts. The light from Linne contained a smaller amount of polarized light. 1867, Feb. 14th. I examined carefully the spectrum of the light reflected from Linne. The small size of the object makes this observation somewhat uncertain. The lines of Fraunhofer were seen with great distinctness in the spectrum of the Moon's light; but I failed to detect any lines which do not belong to solar light, in the narrow, brighter spectrum which was formed by the light from Linne. Herr Schmidt is of opinion that a great change has recently taken place in the appearance of Linne, when it is viewed In the woodcut, the crater is a little too small in proportion to the white spot. B under oblique illumination. This conclusion is based upon a comparison of its present appearance with the descriptions of Lohrmann and Madler, and with more

Product details

  • Paperback | 206 pages
  • 189 x 246 x 11mm | 376g
  • Miami Fl, United States
  • English
  • Illustrations, black and white
  • 1236576233
  • 9781236576231