Piercing London Fogs
GOMEONE noted that a brazier in foggy weather shows a halo of clear air around it, the heat of the flame driving the fog out of the airan effect that we have all probably noticed at some time, or other. An enterprising inventor has put the idea into practice, and now motor headlamps, embodying the principle, are be-/ ing tried on London omnibuses trams. Air is blown by a fan over an . electric heater, and shot out in a long stream in front of the lamp, dispersing the fog as the vehicle proceeds.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19300417.2.34.7
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Radio Record, Volume III, Issue 40, 17 April 1930, Page 24
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96Piercing London Fogs Radio Record, Volume III, Issue 40, 17 April 1930, Page 24
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