ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The line, if present, ought to be an emission line, since the temperature in the corona is decreasing with depth. Collisions would not prevent the emission of the line : for its excitation potential is so very low that half the hydrogen atoms are always on the excited level. Calculation shows that ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/168391b0
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