ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The investigations were carried out during June-November 1952. Use was made of the continuous-wave transmissions from Madras over a 640-km. path on frequencies of 9,590 kc./s. during afternoons and 4,920 kc./s. during late evenings and nights. Simultaneous observations on 18 oblique-incidence pulse ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/172818a0