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" Feb. obscure the fiaint light of the spectra, and entirely prevent the possibility of 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 surface... "
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 - 452 pages
...wire were used, the bright diffused light would almost [•.Monthly Microscopical L Journ •--•-- obscure the faint light of the spectra, and entirely...bands in the most refrangible part of the spectrum. To produce good efiects with this apparatus the upper surface of the compound prism P must make an...
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The Monthly Microscopical Journal: Transactions of the Royal ..., Volume 3

1870 - 384 pages
...used, the bright diffused light would almost ["Monthly Microscopical L Journ ' Feb. obscure the fiaint light of the spectra, and entirely prevent the possibility...bands in the most refrangible part of the spectrum. To produce good effects with this apparatus the upper surface of the compound prism P must make an...
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Optics: Light and Sight Theoretically and Practically Considered, with Their ...

Edward Nugent - 1870 - 302 pages
...advantage, that it only illuminates the precise position in which it may be. If a dark wire were used, the bright diffused light would almost obscure the...possibility of seeing, let alone measuring, the position of the lines or bands in the most refrangible part of the spectrum. Fig. 116. Method of using this Invention....
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Discoveries and Inventions of the Nineteenth Century

Robert Routledge - 1893 - 732 pages
...Micro-Speclro- diffusctl ]ight would alnlost obscure scope with Micrometer. ^ f . lint light of the spect ra, and entirely prevent the possibility of seeing, let...bands in the most refrangible part of the spectrum. To produce good effects with this apparatus the upper surface of the compound prism, P, must make an...
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Discoveries and Inventions of the Nineteenth Century

Robert Routledge - 1896 - 719 pages
...diffused light would almost obscure scope with Mierometer. ,he faint I jght of the spectrai and en_ tirely prevent the possibility of seeing, let alone measuring,...bands in the most refrangible part of the spectrum. To produce good effects with this apparatus the upper surface of the compound prism, P, must make an...
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Discoveries and Inventions of the Nineteenth Century

Robert Routledge - 1903 - 882 pages
...Section of Micro-Spectro- diffused light would almost obscure scope with Micrometer. the faint ljght of the spectra, and entirely prevent the possibility...bands in the most refrangible part of the spectrum. To produce good effects with this apparatus the upper surface of the compound prism, P, must make an...
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