Word: ultraviolet
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...life-cycle of the minute organism that causes cancer, but recently discovered (TIME, July 27, MEDICINE). Already pictures had been made of bodies one 250-thousandth of an inch in diameter (one-third the size of any of the microscope-aided eye had ever seen). The short-waved ultraviolet ray will some day be made to carry images of bodies one 500-thousandths of an inch and smaller, by making the photographs in a vacuum.? Mr. J. E. Barnard, hatter-scientist of Jermyn St., London...
Utmost secrecy always shrouds the structural details of new munitions of war. This one, announced last week by its inventor, Dr. Edwin R. Scott, is called the "death stroke" or "canned lightning." The Navy Department, which has been in touch with Dr. Scott's researches, hinted that the ultraviolet ray was involved, but Dr. Scott stated specifically: "There is no ray or beam about...
...unaided human senses can perceive only a small portion. The spectrum of visible light runs from deep violet, with a wavelength of 16 millionths of an inch, down to deep red, with waves 28 millionths of an inch long. On the "ultra" side of this spectrum, occur the ultraviolet rays with waves 1 millionth of an inch; then a range of little-known shorter vibrations; then the famed X-rays; then, shortest of all known rays, the gamma rays given off by radium. On the infra or long wave side of visible light come infrared, then longer heat waves...
President Clarence C. Little of the University of Maine and Dr. W. T. Bovie, Professor of Biophysics at Harvard Medical School, have discovered a cure for rickets. The cure consists of a violet ray treatment, wherein the subject is exposed to ultraviolet rays projected by a Cooper-Hewitt lamp through a fused quartz window. Chickens?a kind of fowl peculiarly susceptible to rickets?have been experimented upon with a success which definitely establishes the cure...
...problem of rickets, have made further discoveries as to the value of various curative oils. At the University of Wisconsin, it was found that fats other than cod-liver oil, which are ordinarily of no avail in affecting the disease, possess curative properties after they have been subjected to ultraviolet rays. In Manhattan, one Alfred F. Hess and other researchers noted that the potency of cod-liver oil to prevent rickets is greatly increased after the oil has undergone radiation...