Nature, Volume 84Sir Norman Lockyer Macmillan Journals Limited, 1910 |
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Página 160
... lines of calcium renders it essential that the absolute wave - lengths of these lines should be known with the greatest possible accuracy . For this reason Mr. C. St. John , working at the Mount Wilson Solar Observatory , has recently ...
... lines of calcium renders it essential that the absolute wave - lengths of these lines should be known with the greatest possible accuracy . For this reason Mr. C. St. John , working at the Mount Wilson Solar Observatory , has recently ...
Página 221
... lines , and printed in fish - glue upon a sheet of lead foil . I will show one of these line photographs on the screen , and you will see that the light and shade of the picture are made up of masses of thinner or thicker lines , with ...
... lines , and printed in fish - glue upon a sheet of lead foil . I will show one of these line photographs on the screen , and you will see that the light and shade of the picture are made up of masses of thinner or thicker lines , with ...
Página 507
... line appears to be bordered by very bright lines , and as this is the most prominent line on which radial - velocity determinations have been made , the values of the line - of - sight motion have not been in full agreement . An ...
... line appears to be bordered by very bright lines , and as this is the most prominent line on which radial - velocity determinations have been made , the values of the line - of - sight motion have not been in full agreement . An ...
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