 The pure earths , when violently heated, as has recently been practised by Lieutenant Drummond, by directing on small spheres of them the flames of several spirit-lamps, urged by oxygen gas, yield from their surfaces lights of extraordinary splendour,...  Annalen der Physik und Chemie - Pàgina 871863Visualització completa - Sobre aquest llibre
 | Encyclopaedia - 1845 - 876 pàgines
...from their surfaces lights of extraordinary splendour, which, when examined by prismatic analysis, are found to possess the peculiar definite rays in...characterise the tints of flames coloured by them ; so that there can be no doubt that these tints arise from the molecules of the colouring matter reduced to... | |
 | Sir William Crookes, George Wharton Simpson - 1860 - 858 pàgines
...from their surfaces lights of extraordinary splendour, which, \vheu examined by prismatic analysis, are found to possess the peculiar definite rays in excess which characterise the tinte of flames coloured by them ; so that there can be no doubt that these tints arise from the molecules... | |
 | 1862 - 328 pàgines
...from their surfaces lights of extraordinary splendour, which, when examined by prismatic analysis, are found to possess the peculiar definite rays in...characterise the tints of flames coloured by them, so that there can be no doubt that these tints arise from the molecules of the colouring matter reduced to... | |
 | 1863 - 720 pàgines
...of potash a beautiful pale violet.« Er führt dann die Farben au, welche Salze von Kalk, Strontian, Lithium, Baryt, Kupfer und Eisen geben und fährt...characterise the tints of flames coloured by them, *o that can be no doubt that these tints arise from the molecules of the colouring matter reduced to... | |
 | 1863 - 694 pàgines
...from their volatility. The same colours arc exhibited also , when any of the salts in question arc put in powder into the wick of a spirit-lamp « ....characterise the tints of flames coloured by them, »o that can be no doubt that these tints arise from the molecules of the colouring matter reduced... | |
 | Henry Enfield Roscoe - 1870 - 514 pàgines
...from their surfaces lights of extraordinary splendour, which, when examined by prismatic analysis, are found to possess the peculiar definite rays in...characterise the tints of flames coloured by them ; so that there can be no doubt that these tints arise from the molecules of the colouring matter, reduced to... | |
 | Henry E. Roscoe - 1869 - 372 pàgines
...from their surfaces lights of extraordinary splendour, which, when examined by prismatic analysis, are found to possess the peculiar definite rays in...characterise the tints of flames coloured by them ; so that there can be no doubt that these tints arise from the molecules of the colouring matter, reduced to... | |
 | sir Henry Enfield Roscoe - 1869 - 396 pàgines
...from their surfaces lights of extraordinary splendour, which, when examined by prismatic analysis, are found to possess the peculiar definite rays in...characterise the tints of flames coloured by them ; so that there can be no doubt that these tints arise from the molecules of the colouring matter, reduced to... | |
 | Henry Enfield Roscoe, Carl Schorlemmer - 1870 - 360 pàgines
...peculiar definite rays in excess which characterise the tints of ilaroes coloured by them, so that there can be no doubt that these tints arise from the molecules of the colouring matter, reduccd to vapour, and held in a state of violent ignition." Talbot sagt*): „The flamo of sulphur... | |
 | Richard Anthony Proctor - 1871 - 552 pàgines
...yield from their surfaces lights of extraordinary splendour, which when examined by prismatic analysis are found to possess the peculiar definite rays in excess which characterise the tints of the flames coloured by them ; so that there can be no doubt that these tints arise from the molecules... | |
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