Show I How New Light Licht Pierces Pierce Fog Fo Newsprint can cnn be read at night more than a mile away awny by a new fog fog pierc piere- piere ing light recently demonstrated In la London which combines the principles of the blow torch and the gas mantle Bottled oxygen and liquid fuel produce produce produce pro pro- duce a blowtorch torch flame In the new light The flame is drawn against n disk of ot thorium oxide a material commonly commonly com com- used In the manufacture of gas man mantles The result Is a brilliant white light which pierces the densest London fog tog In a test occupants of a motor car cor a mile away rend read a n newspaper newspaper news news- paper by the light Popular Science Monthly 1 |