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" BY GEORGE E. HALE, WALTER S. ADAMS, AND HENRY G. GALE In considering the characteristic features of the spectra of sunspots, three points especially attract attention: 1. The fact that certain lines in the spectrum of a given element are strengthened,... "
Publications of the Astronomical Society of the Pacific - Page 264
by Astronomical Society of the Pacific - 1906
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The Astrophysical Journal, Volume 24

1906 - 412 pages
...CHARACTERISTIC PHENOMENA OF SUN-SPOT SPECTRA 1 BY GEORGE E. HALE, WALTER S. ADAMS, AND HENRY G. GALE In considering the characteristic features of the...relatively great intensity of the continuous background 1 of the spot spectrum in the less refrangible region. From our general knowledge of spectra corresponding...
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Contributions from the Mount Wilson Observatory, Volume 1

Mount Wilson Observatory - 1908 - 594 pages
...CHARACTERISTIC PHENOMENA OF SUN-SPOT SPECTRA BY GEORGE E. HALE, WALTER S. ADAMS, AND HENRY G. GALE In considering the characteristic features of the...3. The relatively great intensity of the continuous background1 of the spot spectrum in the less refrangible region. From our general knowledge of spectra...
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Nature, Volume 75

Sir Norman Lockyer - 1907 - 1068 pages
...of the present paper state at the outset that in considering the chief features of sun-spot spectra, three points especially attract attention : — (1)...the spectrum of a given element are strengthened, others are weakened, the remainder being unaffected. (2) The occurrence of the strengthened lines in...
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Nature, Volume 75

Sir Norman Lockyer - 1907 - 692 pages
...of the present paper state at the outset that in considering the chief features of sun-spot spectra, three points especially attract attention : — (1)...the spectrum of a given element are strengthened, others are weakened, the remainder being unaffected. (2) The occurrence of the strengthened lines in...
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