ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[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 ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/185148a0