| 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... | |
| 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... | |
| 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... | |
| 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
...however, salt be used, Mr. Talbot has shown that the light is an absolutely homogeneous yellow. . . . The colours thus communicated by the different bases...of detecting extremely minute quantities of them. . . . The pure earths, •when violently heated, as has recently been practised by Lieutenant Urummond,... | |
| 1863 - 720 pages
..., when any of the salts in question are put in powder into the wick of a spirit-lamp « . . . . » The colours thus communicated by the different bases...of detecting extremely minute Quantities of them« ... » The pure earths , when violently heated, as has recently been practised by Lieutenant Drummond,... | |
| William Allen Miller - 1863 - 618 pages
...exhibited also when any of the salts in question are put in powder into the wick of a spirit-lamp. The colours thus communicated by the different bases...of 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... | |
| 1863 - 700 pages
...also , when any of the salts in question are put in powder into the wick of a spirit-lamp « .... « The colours thus communicated by the different bases...way of detecting extremely minute quantities of them «... » The pure earths, when violently heated, as has recently been practised by Lieutenant Drummond,... | |
| 1863 - 694 pages
..., when any of the salts in question arc put in powder into the wick of a spirit-lamp « . . . . » The colours thus communicated by the different bases...way of detecting extremely minute quantities of them «... » The pure earths, when violently heated, as has recently been practised by Lieutenant Drummond,... | |
| 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... | |
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