 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 The pure earths, when violently heated, as has recently been practised by Lieut.  Annalen der Physik und Chemie - Page 951863Full view - About this book
 | 1871 - 808 pages
...intervals at all events, till 1827, when he wrote, " The colors thus contributed by different objects to flame afford in many cases a ready and neat way...of detecting extremely minute quantities of them." Here we find spectrum analysis almost stated in terms, and yet, although Herschel, Brewster, and Fox... | |
 | Encyclopaedia - 1845 - 876 pages
...it is obtained, and its identity at all times. The colours thus communicated by the different base« to flame, afford in many cases a ready and neat way of detecting extremely minute quantities of them ; but this rather belongs to Chemistry than to our present subject. The pure earths, when violently... | |
 | 1871 - 792 pages
...intervals at all events, till 1827, when he wrote : "The colours thus contributed by different objects to flame afford in many cases a ready and neat way...of detecting extremely minute quantities of them." Here we find spectrum analysis almost stated in terms, and yet, although Herschel, Brewster, and Fox... | |
 | Sir William Crookes, George Wharton Simpson - 1860 - 858 pages
...its identity at all times. The colours thus communicated by the different bases to Зяте afiord in many cases a ready and neat way of detecting extremely minute quantities of them ; but this rather belongs to chemistry than to our present subject. The pure earths, when violently... | |
 | 1862 - 328 pages
...Encyclopedia Hetrcpolilana, in the year 1817, Herschel says, — " The colours thus communicated by different bases to flame afford in many cases a ready...of detecting extremely minute quantities of them." But it is to Fox Talbot, a gentleman well-kno on to us as one of the first investigators of the beautiful... | |
 | William Allen Miller - 1863 - 618 pages
...best, from their volatility. The same colours are exhibited also when any of the salts in question are put in powder into the wick of a spirit-lamp. The...detecting extremely minute quantities of them." The analysis of the spectra of artificial lights was resumed by Fox Talbot in 1826, in vol. v. of Brewster's... | |
 | Edward Isidore Sears - 1865 - 870 pages
...barium. "Of all salts," he says, " the muriates succeed best from their volatility ;" " the colors thus communicated by the different bases to flame,...of detecting extremely minute quantities of them." TalbotJ, in 1826, analysed the spectra of various artificial lights. He observed a constant yellow... | |
 | John Frederick William Herschel - 1867 - 550 pages
...attention to a passage in my "Treatise on Light," published in 1827 (Encyc. Metrop., vol. iv.): — "The colours thus communicated by the different bases...of detecting extremely minute quantities of them." — Article, " Light," § 524.) almost infinite variety of particulars as to their intimate nature... | |
 | sir John Frederick W. Herschel (1st bart.) - 1867 - 642 pages
...Light," published in 1827 (Encyc. Metrop., vol. iv.): — "The colours thus communicated by the diferent bases to flame, afford in many cases a ready and neat...of detecting extremely minute quantities of them." — Article, " Light,' § 524.) almost infinite variety of particulars as to their intimate nature... | |
 | William Andrew Miller - 1867 - 552 pages
...best, from their volatility. The same colours are exhibited also when any of the salts in question are put in powder into the wick of a spirit-lamp. The...thus communicated by the different bases to flame, ufi'ord in many cases a ready and neat way of detecting extremely minute quantities of them." The analysis... | |
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