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" They showed* that a burning surface of magnesium wire, which, seen from a point at the sea's level, has an apparent magnitude equal to that of the sun, effects on that point the same chemical action as the sun would do if shining from a cloudless sky... "
THE JOURNAL OF THE PHOTOGRAPHIC SOCIETY OF LONDON. - Page 5
by HUGH W. DIAMOND, M.D., F.S.A. - 1866
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Journal of the Chemical Society, Volume 77

Chemical Society (Great Britain) - 1900 - 1466 pages
...photographic purposes. We found that a burning surface of magnesium wire, which, seen from a point of the sea's level, has an apparent magnitude equal to that of the sun, effects, at that point, the same chemical action as the sun would do if shining from a cloudless sky at the...
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Chemical News and Journal of Industrial Science, Volume 9

1864 - 332 pages
...suggested the application of this light for the purpose of photography. They showedf that a burning surface of magnesium wire, which, seen from a point at the...point the same chemical action as the sun would do if shining from a cloudless sky at a height of 9° 53' above the horizon. On comparing the visible...
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The Chemical News and Journal of Physical Science, Volumes 9-10

1864 - 650 pages
...they chose the light evolved by the combustion of magnesium wire. They showed that a burning surface of magnesium wire which, seen from a point at the...horizon. On comparing the chemical with the visible brightness of these two sources of light it was found that the brightness of the sun's disc as measured...
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Proceedings of the Literary and Philosophical Society of Manchester, Volumes 3-7

Literary and Philosophical Society of Manchester - 1864 - 1170 pages
...evolved by the combustion of magnesium wire. They showed that a burning surface of magnesium \yire which, seen from a point at the sea's level, has an...above the horizon. On comparing the chemical with PROCEEDINGS— LIT. & Tail.. SOCIETT— No. 12.— SESSION 1863-64 the visible brightness of these...
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Chemical News and Journal of Industrial Science, Volumes 9-10

1864 - 654 pages
...suggested the application of this light for the purpose of photography. They showed fthat a burning surface of magnesium wire, which, seen from a point at the...has an apparent magnitude equal to that of the sun, effect.« on that point the same chemical action as the sun would do if shining from a cloudless sky...
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Ures̓ Dictionary of Arts, Manufactures and Mines: Containing a ..., Volume 3

Andrew Ure - 1867 - 1144 pages
...especially indebted for an examination of this question. Their experiments fbowi.d t'-.at a burning surface of magnesium wire which, seen from a point at the...magnitude equal to that of the sun, effects on that point tlie same chemical action as the sun would do when shining from a cloudless sky at a height of 9°...
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Spectrum Analysis -- Six Lectures

Henry E. Roscoe - 1869 - 372 pages
...suggested the application of this light for the purpose of photography. They showed1 that a burning surface of magnesium wire, which, seen from a point at the...point the same chemical action as the sun would do if shining from a cloudless sky at a height of 9° 53' above the horizon. On comparing the visible...
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Spectrum analysis, 6 lects

sir Henry Enfield Roscoe - 1869 - 396 pages
...suggested the application of this light for the purpose of photography. They showed1 that a burning surface of magnesium wire, which, seen from a point at the...point the same chemical action as the sun would do if shining from a cloudless sky at a height of 9° 53' above the horizon. On comparing the visible...
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Spectrum Analysis: Six Lectures, Delivered in 1868, Before the Society of ...

Henry Enfield Roscoe - 1870 - 514 pages
...the application of this light for the purpose of photography. They showed 1 that a burning surface of magnesium wire, which, seen from a point at the...point the same chemical action as the sun would do if shining from a cloudless sky at a height of 9° 53' above the horizon. On comparing the visible...
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Spectrum Analysis: Six Lectures, Delivered in 1868, Before the Society of ...

Henry Enfield Roscoe - 1873 - 542 pages
...the application of this light for the purpose of photography. They showed 1 that a burning surface of magnesium wire, which, seen from a point at the...point the same chemical action as the sun would do if shining from a cloudless sky at a height of 9° 53' above the horizon. On comparing the visible...
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