 | Henry Enfield Roscoe - 1873 - 542 ページ
...colours appear, each letter being able to reflect its own peculiar rays. contributed by different objects to flame afford in many cases a ready and neat way of detecting extremely minute iquantities of them." Fox Talbot, whose name we know as being so intimately connected with the origin... | |
 | Edward Henry Knight - 1877 - 984 ページ
...Uerscbel remarked that " the colors contributed by different objects to flame afford in many instances a ready and neat way of detecting extremely minute quantities of them.'' Mr Fox Talbot, in 1834. distinguishes tho difference between the red Нпек produced by the names... | |
 | Marlborough College (Marlborough, England). Natural History Society - 1877 - 606 ページ
...Copper and some other substances, he says : " 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." And a f ew years later Fox Talbot remarks : "A glance at the prismatic spectrum of flame may shew it... | |
 | William Allen Miller - 1877 - 840 ページ
...powder into the wick of a spirit-lamp. The colours thus communicated by the different bases to name, afford in many cases a ready and neat way of detecting extremely minute quantities of them." The analysis of the spectra of artificial lights was resumed by Fox Talbot (Brewster's Journal of Science,... | |
 | John Henry Pepper - 1877 - 764 ページ
...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 Talbot, speaking of his experiments with the red tint of flame produced by lithium... | |
 | Henry Enfield Roscoe, Carl Schorlemmer - 1879 - 590 ページ
...concerning these observations — " the colour thus contributed by different objects to flame affords in many cases a ready and neat way of detecting extremely minute quantities of them." Again, Fox Talbot writes as follows in 1826: — "The red fire of the theatres gave a most beautiful... | |
 | James Samuelson, Sir William Crookes - 1880 - 822 ページ
...general," impart to flames, he observes 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 ;" and he assigns also reasons to show that " these tints arise from the molecules of the colouring-matter... | |
 | Eneas Sweetland Dallas - 1870 - 532 ページ
...put (in powder) into the wick of a spirit lamp. The colours thus communicated by the different bases to flame, afford, in many cases, a ready and neat...of detecting extremely minute quantities of them. The pure earths, when violently heated — as has been recently practised by Lieutenant Drummond, by... | |
 | Robert Routledge - 1881 - 748 ページ
...of flame colorations in chemical analysis : " 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." 31 Fox-Talbot, whose name will always be remembered in connection with the beautiful art of photography,... | |
 | Gustav Kirchhoff - 1882 - 832 ページ
...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,... | |
| |