FOG LIGHTING

Rotorua Morning Post, Volume 2, Issue 386, 22 November 1932, Page 2

FOG LIGHTING

YELLOW LtGHT A DELUSION. When the world's lighting experts met at' Cambridge, England, some months ago, they attended a demonstration of motor-lamps that sought hy divers means to avoid dazzle, but neither their united wisdom nor the demonstration produced a solution of that most troublesome problem. One motoring question, however, the experts did settle. They unanimously agreed that one' faith in yellow light for piercing fog is a pathetic delusion. Yellow light is no hetter than any other colour. A tiiited lamp seems more penetrative merely because it reduces the intensity of the beam light. TissUe paper or a coat of whitiflg on the lamp glass would be just as effectiVe — anything that softens the beam. What happens in fog is that the light of one's lamps is reflected bkck by the minute drops of water suspended in the air, so that the bfighter the light the stronger the refliection The whole art of fog lighting is never to get the rays from any lamp hetween you and the road or kerb or the object you are trying to see. Spot lights at the right-hand corner of the. windscreen are worse than useless, and the offside headlight is not much better, unless it can be dipped to shine straight down. A. dip-and-swivel arrahgement gives best driving light in fog, and faihng that a special fog lamp with a narrow concentrated beam set as low as possible to shine along the kerb or road edge.