 ... eliminated. The April number of the American Journal of Science contains an account of a photograph of the spectrum of this nebula taken by Dr. Huggins. I have not found the line at X 3730, of which he speaks, though I have other lines which he does...  Researches on Astronomical Spectrum-photographyby Henry Draper - 1884 - 11 pagesFull view - About this book
 | Science - 1882 - 1088 pages
...constitution of the nebula though differences of intrinsic brightness would require to be eliminated. to the fact that he had placed his slit on a different...reference spectrum extends beyond the region in question. As illustrating the delicacy of working required in this research it may be mentioned that in one of... | |
 | Astronomy - 1882 - 426 pages
...3730, of which he speaks, though I have other lines which he does not appear to have photographed. This may be due to the fact that he had placed his slit...reference spectrum extends beyond the region in question. As illustrating the delicacy of working required in this research, it may be mentioned that in one... | |
 | Sir Norman Lockyer - Electronic journals - 1882 - 960 pages
...3730, of which he speaks, though I have other lines which he does not appear to have photographed. This may be due to the fact that he had placed his slit...reference spectrum extends beyond the region in question. As illustrating the delicacy of working required in this research, it may be mentioned that in one... | |
 | Sir Norman Lockyer - Electronic journals - 1882 - 722 pages
...3730, of which he speaks, though I have other lines which he does not appear to have photographed. This may be due to the fact that he had placed his slit...reference spectrum extends beyond the region in question. As illustraring the delicacy of working required in this research, it may be mentioned that in one... | |
 | Sir Norman Lockyer - Electronic journals - 1882 - 674 pages
...he speaks, though I have other lines which he does not appear to have photographed. This may be clue to the fact that he had placed his slit on a different...reference spectrum extends beyond the region in question. As illustraring the delicacy of working required in this research, it may be mentioned that in one... | |
 | 1883 - 708 pages
...invisible line, Dr. Draper says, ' I have not found this line, though I have other lines which Dr. Huggins does not appear to have photographed. This may be due to the fact that he had placed the slit ' (directed his spectroscope one might perhaps say, though not with the... | |
 | 1883 - 736 pages
...invisible line, Dr. Draper says, ' I have not found this line, though I have other lines which Dr. Huggins does not appear to have photographed. This may be due to the fact that he had placed the slit' (directed his spectroscope one might perhaps say, though not with the... | |
 | John Holmes Agnew, Walter Hilliard Bidwell - American periodicals - 1883 - 924 pages
...invisible line, Dr. Draper says, " I have not found this line, though I have other lines which Dr. Huggins does not appear to have photographed. This may be due to the fact that he had placed the slit"(directed his spectroscope one might perhaps say, though not with the same... | |
 | 1883 - 884 pages
...invisible line, Dr. Draper says, " I have not found this line, though I have other lines which Dr. Huggins does not appear to have photographed. This may be due to the fact that he had placed the slit"(directed his spectroscope one might perhaps say, though not with the same... | |
 | Richard Anthony Proctor - Astronomy - 1884 - 422 pages
...invisible line, Dr. Draper says, ' I have not found this line, though I have other lines which Dr. Huggins does not appear to have photographed. This may be due to the fact that he had placed the slit ' (directed his spectroscope one might perhaps say, though not with the... | |
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