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" Under these circumstances the limits of correction for the path of the rays in their passage through the dispersing prisms are very limited and must be strictly observed. The usual method of correcting by the outer surface is inadmissible. For the sake... "
How to work with the spectroscope - Page 46
by John Browning (F.R.A.S.) - 1878 - 66 pages
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The Monthly Microscopical Journal: Transactions of the Royal ..., Volume 3

1870 - 384 pages
...seeing, let alone measuring, the position of lines or bands in the most refrangible part of the spectrum. To produce good effects with this apparatus the upper...just described measure the position of the principal Fraiinhofer's lines iu the solar spectrum. Let this be done carefully, in bright daylight. A little...
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The Monthly Microscopical Journal: Transactions of the Royal ..., Volume 3

1870 - 452 pages
...the position of lines or bands in the most refrangible part of the spectrum. To produce good efiects with this apparatus the upper surface of the compound...just described measure the position of the principal Fraiinhofer's lines in the solar spectrum. Let this be done carefully, in bright daylight. A little...
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Discoveries and Inventions of the Nineteenth Century

Robert Routledge - 1893 - 732 pages
...upper surface of the compound prism, P, must make an angle of exactly 45° with the sides of the u:be. Under these circumstances the limits of correction...draw a spectrum from a scale of equal parts. About 3 in. will be found long enough for this spectrum ; but it may be made as much longer as is thought...
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Discoveries and Inventions of the Nineteenth Century

Robert Routledge - 1896 - 719 pages
...simplicity, some of the work of the lower part of the micro-spectroscope is omitted in the engraving. As .:o the method of using this contrivance : With the apparatus just described, measure the position of the prmcipal Fraunhofer's lines in the solar spectrum. Let this be done carefully, in bright daylight....
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Discoveries and Inventions of the Nineteenth Century

Robert Routledge - 1903 - 882 pages
...simplicity, some of the work of the lower part of the micro-spectroscope is omitted in the engraving. As vO the method of using this contrivance : With the apparatus...draw a spectrum from a scale of equal parts. About 3 in. will be found long enough for this spectrum ; but it may be made as much longer as is thought...
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