ISSN:
1476-4687
Quelle:
Nature Archives 1869 - 2009
Thema:
Biologie
,
Chemie und Pharmazie
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
Notizen:
[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, ...
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1038/260306a0
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