 | 1871 - 808 pàgines
...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 pàgines
...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 pàgines
...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 pàgines
...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 pàgines
...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... | |
 | Edward Isidore Sears - 1865 - 858 pàgines
...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 - 552 pàgines
...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 pàgines
...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... | |
 | John Frederick William Herschel - 1867 - 534 pàgines
...Light," published in 1827 (Encyc. Metrop., vol. iv.): — "The colours thus communicated by the difierent bases to flame, afford in many cases a ready and neat way ot detecting extremely minute quantities of them." — Article, " Light," almost infinite variety of... | |
 | Henry Watts - 1868 - 1170 pàgines
...1827 about them as follows, in the Encyclopedia Melropolitana : " The colours thus communicated by different bases to flame afford in many cases a ready...of detecting extremely minute quantities of them." Fox Talbot, writing in 1826, makes the following valuable suggestions respecting these spectra: "The... | |
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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. 
