ISSN:
1476-4687
Quelle:
Nature Archives 1869 - 2009
Thema:
Biologie
,
Chemie und Pharmazie
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
Notizen:
[Auszug] DURING three periods of approximately one month each, continuous recordings were taken of the electromagnetic energy in the spectrum region of 10 c.p.s. to 10 kc.p.s. The detection equipment was a 10-m. vertical antenna, a swept frequency battery-operated spectrum analyser and a recording ...
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1038/185148a0
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