 The colours thus communicated by the different bases to flame afford, in many cases, a ready and neat way of detecting extremely minute Quantities of them...  Spectrum analysis, 6 lects - Page 92by sir Henry Enfield Roscoe - 1869Full view - About this book
 | Gustav Kirchhoff - 1882 - 832 pages
...spirit-lamp" — „The colours thus communicated by the different bases to flame afford, in niany cases, a ready and neat way of detecting extremely minute quantities of them" . . . „The pure earths, when violently heated, äs has recently been practised by Lieutenant Drummond,... | |
 | 1885 - 518 pages
...the spectra of various-coloured flames, and some four or five years afterwards we fini!; him saying " the colours thus contributed by different objects to flame afford in many cases a ready and neatway of detecting extremely minute quantities of them. In the year 1826, Fox Talbot, the father... | |
 | Robert Routledge - 1893 - 732 pages
...and of some other substances, remarking that " The colours thus communicated by the different bases to flame afford in many cases a ready and neat way...of detecting extremely minute quantities of them." A few years later, Fox TaIbot described the method of obtaining a monochromatic flame, by using in... | |
 | Heinrich Kayser, Heinrich Mathias Konen - 1900 - 830 pages
...pale violet." — „The colours thus communicated by the different bases to flame afford, in niany cases, a ready and neat way of detecting extremely minute quantities of them." — „ . . . can be no doubt that these tints arise from the molecules of the colouring matter reduced... | |
 | Sir Arthur Schuster, Sir Arthur Everett Shipley - 1917 - 432 pages
...1823, and made two significant observations: " The colours thus communicated by the different gases to flame afford, in many cases, a ready and neat way...of detecting extremely minute quantities of them," and " no doubt these tints arise from the molecules of the colouring matter reduced to vapour, and... | |
 | Sir Arthur Schuster, Sir Arthur Everett Shipley - 1917 - 396 pages
...made two significant observations : " The colours thus communicated by the different gases to Same afford, in many cases, a ready and neat way of detecting extremely minute quantities of them," and " no doubt these tints arise from the molecules of the colouring matter reduced to vapour, and... | |
 | 1861 - 1186 pages
...volatility. He also adds the distinct statement, that " the colours thus communicated by different bases to flame afford in many cases a ready and neat way...of detecting extremely minute quantities of them." ROYAL SOCIETY. [Continued from p. 77-] November 22, 1860. — Major-General Sabine, RA, Treasurer and... | |
 | J. B. Hearnshaw - 1990 - 554 pages
...Sir John Herschel (1792-1871). He wrote in 1823: The colours thus communicated by the different bases to flame afford, in many cases, a ready and neat way...of detecting extremely minute quantities of them' (3). Herschel was therefore one of the first to suggest that flame colours could be used for chemical... | |
 | Michael J. Crowe - 1994 - 468 pages
...with various metallic salts, stated: "The colours thus communicated by the different bases to flames afford, in many cases, a ready and neat way of detecting extremely minute quantities of them. . . ." By 1828 Josef Fraunhofer had published papers in which he ( 1 ) described over 500 dark lines... | |
 | 1871 - 828 pages
...these researches were carried on, at intervals at all events, till 1827, when he wrote, " The colors thus contributed by different objects to flame afford...of detecting extremely minute quantities of them." Here we find spectrum analysis almost stated in terms, and yet, although Herschel, Brewster, and Fox... | |
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