As with so many inventions the new neon gaslight signs now rapidly appearing in every large city of the world have aroused suspicionthat they gave out ultraviolet rays injurious to the eyes. In Buenos Aires one P. Satanowsky quieted fears by having assistants work in neon light several hours daily for several days. His conclusion, heard in the U. S. last week, was that the light is not injurious, that the glass of the tubes containing the neon gas absorbs all the ultraviolet light.
...
To continue reading:
or
Log-In
