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" The flame of sulphur and nitre contains a red ray which appears to me of a remarkable nature. This red ray appears to possess a definite refrangibility, and to be characteristic of the salts of potash, as the yellow ray is of the salts of soda, although,... "
Spectrum Analysis: Six Lectures, Delivered in 1868, Before the Society of ... - Page 127
by Henry Enfield Roscoe - 1873 - 484 pages
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Spectrum analysis, 6 lects

sir Henry Enfield Roscoe - 1870 - 452 pages
...by prismatic analysis, are found to possess the peculiar definite rays in excess which characterise the tints of flames coloured by them ; so that there...from its feeble illuminating power, it is only to be detected with a prism. If this should be admitted, I would further suggest, that whenever the prism...
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Die spectralanalyse in einer reihe von sechs vorlesungen mit ...

Henry Enfield Roscoe, Carl Schorlemmer - 1870 - 360 pages
...nature." .... „Thia red ray appears to possess a definite refrangibility , and to be eharacteristic of the salts of potash, as the yellow ray is of the salts of soda, although , from it8 feeble illuminating power, it is only to be detected with a prism. If this should be admitted,...
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Proceedings of the Royal Society of Edinburgh, Volume 7

Royal Society of Edinburgh - 1872 - 914 pages
...contains a red ray of remarkable nature. This red ray possesses a definite refrangibility, and appears to be characteristic of the salts of potash, as the yellow ray is of the salts of soda. If this should be admitted, I would further suggest that ivhenever the prism shows a homogeneous ray...
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Spectrum analysis, 6 lects

sir Henry Enfield Roscoe - 1873 - 550 pages
...of them. The pure earths when violently heated, as has recently been practised by Lieut. Urummond, by directing on small spheres of them the flames of...appears to possess a definite refrangibility, and to.be characteristic of the salts of potash, as the yellow ray is of the salts of soda, although, from...
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Spectrum Analysis: Six Lectures, Delivered in 1868, Before the Society of ...

Henry Enfield Roscoe - 1873 - 542 pages
...molecules of the colouring matter, reduced to vapour and in a state of violent ignition." Talbot says: : " The flame of sulphur and nitre contains a red ray...from its feeble illuminating power, it is only to be detected with a prism. If this should be admitted, I would further suggest, that whenever the prism...
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Gesammelte Abhandlungen

Gustav Kirchhoff - 1882 - 832 pages
...of the colouring matter reduced to vapour, and held in a state of violent ignition." Talbot sagt1): „The flame of sulphur and nitre contains a red ray,...refrangibility, and to be characteristic of the salts of potash, äs the yellow ray is of the salts of soda, although, from its feeble illuminating power, it is only...
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Proceedings of the Royal Society of Edinburgh, Volume 7

Royal Society of Edinburgh - 1872 - 882 pages
...pointing out the fact that in inquiries like this an achromatic telescope is not necessary.] racteristic of the salts of potash, as the yellow ray is of the salts of soda. If this should be admitted, I would further suggest that whenever the prism shows a homogeneous ray...
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The Analysis of Starlight: One Hundred and Fifty Years of Astronomical ...

J. B. Hearnshaw - 1990 - 554 pages
...he announced in 1839 practically simultaneously with Daguerre in France. In 1826 Fox Talbot wrote: The flame of sulphur and nitre contains a red ray,...me of a remarkable nature This red ray appears to 32 possess a definite refrangibility, and to be characteristic of the salts of potash, as the yellow...
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The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science

1863 - 1212 pages
...of the colouring matter, reduced to vapour and held in a state of violent ignition." Talbot says*, "The flame of sulphur and nitre contains a red ray...from its feeble illuminating power, it is only to be detected with a prism. If this should be admitted, I would further suggest that whenever the prism...
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Transactions of the Pharmaceutical Meetings

1862 - 670 pages
...of nitre and sulphur, he observed a red ray of low but definite refrangibility, which he regarded as characteristic of the salts of potash, as the yellow ray is of the salts of soda. He concludes his paper with the following observation, which follows some remarks upon some experiments...
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