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 971863Full view - About this book
| John Frederick William Herschel - 1867 - 534 pages
...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 pages
...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... | |
| 1868 - 802 pages
...strontia, and copper, and showed that " the colors communicated to flume by different bases afforded, in many cases, a ready and neat way of detecting extremely minute quantities '' of Bitch bases. In 1826, Fox Talbot declared that he did " not hesitate to say that optical analysis could... | |
| Mary Somerville - 1869 - 454 pages
...chlorides and nitrate of copper and boracic acid ; and observes that ' the colours thus communicated by different bases to flame afford, in many cases, a...neat way of detecting extremely minute quantities of them.'6 The same opinion was afterwards formed by Mr. Fox Talbot, who after many experiments on metallic... | |
| Henry Enfield Roscoe - 1870 - 514 pages
...acid, and he writes in 1827 about this as follows: "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." Fox Talbot, whose name we know as being so intimately connected with the origin of the beautiful art... | |
| sir Henry Enfield Roscoe - 1869 - 396 pages
...acid, and he writes in 1827 about this as follows : "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." Fox Talbot, whose name we know as being so intimately connected with the origin of the beautiful art... | |
| John Henry Pepper - 1869 - 722 pages
...Sir John Herschel remarks that, " The colours thus communicated by different bases to flame affords in many cases a ready and neat way of detecting extremely minute quantities of them." In 1834 Mr. Fox Talbst, speaking of his experiments with the red tint of flame produced by lithium... | |
| sir Henry Enfield Roscoe - 1870 - 452 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...violently heated, as has recently been practised by Lieut. Drummond, by directing on small spheres of them the flames of several spirit-lamps, urged by... | |
| Henry Enfield Roscoe, Carl Schorlemmer - 1870 - 360 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...cases, a ready and neat way of detecting extremely quantities of them." .... „The pure earths, when violently heated, as has recently been practised... | |
| John Frederick William Herschel - 1871 - 524 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... | |
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