ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The cosmic microwave background radiation (CMBR) will populate excited levels of atomic and molecular species when the energy separations involved are not too different from the CMBR peak frequency. The first measurement of the local CMBR temperature was in fact made using this method5 with fine ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/371043a0
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