A light ray with a beam of ■ 1,380,060 candle-newer, which is'visible for a distance of 250 miles, lias been installed at Charlottesville, Virginia, to guide pilots of air mails. If the light were shining towards a man at a distance of 50 miles he could read a newspaper by it.
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https://paperspast.natlib.govt.nz/newspapers/DOM19280105.2.47
Bibliographic details
Dominion, Volume 21, Issue 82, 5 January 1928, Page 8
Word Count
50Untitled Dominion, Volume 21, Issue 82, 5 January 1928, Page 8
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