A light ray. with a beam of 1,380,000 candle power, which is rvisible for a dis: tance of 250 miles, has'been installed at Charlottesville, Virginia, to guide pilots of air mails. If the light were shining towards a man at a distance of SO miles he could read a newspaper by it.
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https://paperspast.natlib.govt.nz/newspapers/EP19280121.2.136
Bibliographic details
Evening Post, Volume CV, Issue 17, 21 January 1928, Page 15
Word Count
52Untitled Evening Post, Volume CV, Issue 17, 21 January 1928, Page 15
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