ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Our measurements covered photon energies of 25 to 100 keV and were made with a balloon-borne X-ray telescope launched from Palestine, Texas, on May 10, 1969. The instrument, used primarily for source angular diameter measurements, comprised a pair of Nal(Tl) detectors with anticoincidence shields ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/224050a0
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