STREETS INVISIBLE
IN EVENT OF AIR ATTACK IMPORTANT DISCOVERY IN ENGLAND. Frew Association—By Telegraph—Copyright LONDON, February 12. A most important discovery as the result of the Bedford blackout was that the faint blue lights shaded above the attached lamp standards, which replaced the ordinary lighting, rendered the streets invisible to an aeroplane at an altitude of 2,000 ft, but gave sufficient light for traffic to move safely, enabling essential services to be maintained.
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Evening Star, Issue 22573, 15 February 1937, Page 9
Word Count
73STREETS INVISIBLE Evening Star, Issue 22573, 15 February 1937, Page 9
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