VISIBLE IN DARK

Evening Post, Volume CXXVIII, Issue 109, 4 November 1939, Page 19

VISIBLE IN DARK

ORESS FpRJp BLACK-OUTS

LUMINOUS MATERIALS

(By Air Mail; from "The Post's" London Representative.) LONDON, September 19. In the matter of outdoor clothes, most designers are concentrating on ideas ] that will prove practical and make for safety in the long months of blackout that are ahead. Men's clothes will probably become lighter in colour. |

The Men's Wear Council is urging men to wear white jackets in the streets after dusk. One type of jacket is of white oilskin reaching to the waist; another, pf white linen, is longer. The first is expected to be of use to A.R.P. wardens.

II is recorded that in a street test, a man wearing one of these jackets was visible at twenty-five feet from the dim lights of,a motor-car, while a companion in ordinary- clothes was invisible.

Another useful device is buttons treated *vith luminous paint. These, if exposed during the day, will emit' a greenish glow for hours in the darkness.

A further suggestion is the treatment of armlets and hatbands with a secret French invention called Luminophore, which gives out remarkable- phosphorescence. ; This substance is said to have been used for sign-posting the Maginot Line.