 | 1897 - 916 pages
...the bad annealing of his prism, though he says that It was made of good glass and free from bubbles. The dark lines were described- first by Wollaston...knowledge of the time had to be summed up by Mrs. Somerville in the negation: "We are still ignorant of the cause of these rayless bands." Later on,... | |
 | 1900 - 598 pages
...first by Wollaston in 1792, who strangely associated them with the boundaries of the spectral colours, and so turned contemporary thought away from the direction...knowledge of the time had to be summed up by Mrs. Somerville in the negation, " We are still ignorant of the cause of these rayless bands." Later on,... | |
 | Astronomical Society of the Pacific - 1910 - 316 pages
...use. "... It is not easy for men of the present generation. Astronomical Society of the Pacific. 153 familiar with the knowledge which the new methods...knowledge of the time had to be summed up by Mrs. SOMERVILLE in the negation : 'We are still ignorant of the cause of these rayless bands.' "Later on,... | |
 | Smithsonian Institution. Board of Regents - 1911 - 846 pages
...dark lines are still known, not only to map some 600 of them, but also to discover similar lilies, but differently arranged, in several stars. Further,...knowledge of the time had to be summed up by Mrs. Somerville In the negation : " We are still ignorant of the cause of these rayless bands." Later on... | |
 | Smithsonian Institution. Board of Regents - 1911 - 840 pages
...observation contained the key to the interpretation of the dark lines as a code of symbols, but Frauuhofer failed to use it; and the birth of astrophysics was...knowledge of the time had to be summed up by Mrs. Somerville in the negation : " We are still Ignorant of the cause of these rayless bands." Later on... | |
 | Smithsonian Institution. Board of Regents - 1911 - 850 pages
...left to Fraunhofer in 1815, by whose name the dark lines are still known, not only to map some 600 of them, but also to discover similar lines, but differently...knowledge of the time had to be summed up by Mrs. Somerville in the negation : " We are still ignorant of the cause of these rayless bands." Later ou... | |
 | Smithsonian Institution. Board of Regents - 1911 - 848 pages
...also to discover similar lines, but differently arranged, in several stars. Further, he found that n pair of dark lines in the solar spectrum appeared...knowledge of the time had to be summed up by Mrs. Somerville in the negation : " We are still Ignorant of the cause of these rayless bands." Later on... | |
 | 1897 - 1044 pages
...was left to Fraunhoferin 1815, by whose name the dark lines are still known, not only to map some 600 of them, but also to discover similar lines, but differently...knowledge of the time had to be summed up by Mrs. iSomerville in the negation : ' We are still ignorant of the cause of these rayless bands.' Later on,... | |
 | 1897 - 1074 pages
...was left to Fraunhoferin 1815, by whose name the dark lines are still known, not only to map some 600 of them, but also to discover similar lines, but differently...knowledge of the time had to be summed up by Mrs. Somerville in the negation : ' We are still ignorant of the cause of these rayless bands.' Later on.... | |
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Fraunhofer in 1815, by whose name the dark lines are still known, not only to map some six hundred of them, but also to discover similar lines, but differently arranged, in several stars. Further, he found that a pair of dark lines in the solar spectrum... 