ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] It is likely that the critical frequency (fQF2) on the ray path at the time of the observations (~20h UT April 3, 1968) was about 7-6 MHz (private communication from T. R. Hartz). This, combined with a probable F -region equivalent thickness of 305 km (ref. 2), suggests a total electron content of ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/2181036a0
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