Annual Report of the Board of Regents of the Smithsonian InstitutionThe Institution, 1914 |
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Сторінка 176
... lines will be found at the corresponding places . Also in the spectra of the sun and of many of the stars there occur dark lines corresponding exactly in place to the bright lines of the spectra of the chemical elements found upon the ...
... lines will be found at the corresponding places . Also in the spectra of the sun and of many of the stars there occur dark lines corresponding exactly in place to the bright lines of the spectra of the chemical elements found upon the ...
Сторінка 177
... lines was necessary , or indeed possible , than he had obtained . But in recent years it has been found necessary to go over the whole ground again , and to determine the positions of the lines of the chemical elements and the lines in ...
... lines was necessary , or indeed possible , than he had obtained . But in recent years it has been found necessary to go over the whole ground again , and to determine the positions of the lines of the chemical elements and the lines in ...
Сторінка 179
... lines are weakened and some strengthened in sun spots , as compared with those of the sur- roundings . The cause of the numerous additional lines in the sun- spot spectrum has been found to be the presence of certain compound substances ...
... lines are weakened and some strengthened in sun spots , as compared with those of the sur- roundings . The cause of the numerous additional lines in the sun- spot spectrum has been found to be the presence of certain compound substances ...
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