Three investigators, widely separated, last week reported on an invisible light ray which seems to be the intimate tool of death. At the Smithsonian Institution Dr. Florence E. Meier fired ultraviolet ...
A new collection of images features data from NASA’s Chandra X-ray Observatory. These objects have been observed in invisible light — including X-rays, infrared, and radio — by some of the most ...
WHENEVER light is produced, invisible W radiations-ultra-violet (U.V.) or infra-red (I.R.) are, almost without exception, produced at the same time. Glasses which are transparent to the visible rays ...
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