ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] A typical upper limit of about 40 Jy (1 Jy = 10?26 W m?2 Hz?1) was attained at the 616523 rotational transition line of the water vapour molecule (that is, a frequency of 22,235.08 MHz). A new ruby travelling wave K-band maser receiver1 was used at the 13.7-m Itapetinga radio telescope2, Atibaia, ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/260306a0
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