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A radioactive dial marker for the Decca navigational aid / by G. E. Alexander & G. G. Eichholz.: M38-1/15-1958E-PDF

"A small auxiliary unit has been designed for use in conjunction with a Decca Navigational System on survey flights. The unit is intended to trigger a relay system which actuates an aerial camera every time the dial pointer on the Decca dial passes through zero. For this purpose, the pointer tip has been coated with radioactive caesium-137 whose activity is detected by a Geiger tube located above the dial face"--Abstract, p. i.

Permanent link to this Catalogue record:
publications.gc.ca/pub?id=9.867332&sl=0

Publication information
Department/Agency
  • Canada. Department of Mines and Technical Surveys.
  • Canada. Mines Branch.
TitleA radioactive dial marker for the Decca navigational aid / by G. E. Alexander & G. G. Eichholz.
Series title
  • Mines Branch Research Report ; R 15.
Publication typeMonograph - View Master Record
Language[English]
FormatDigital text
Electronic document
Note(s)
  • Digitized edition from print [produced by Natural Resources Canada].
  • "June 2, 1958."
  • Cover title.
Publishing information
  • Ottawa : Department of Mines and Technical Surveys, 1958.
Author / Contributor
  • Alexander, G. E.
  • Eichholz, G. G.
Descriptionii, 8 p. : ills.
Catalogue number
  • M38-1/15-1958E-PDF
Subject terms
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