Word: ultraviolet
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...Earth, the effect of excess radiation received during sunspot maxima is to evaporate more water, bring on heavier rainfall, and thus paradoxically make the average temperature slightly cooler than during sunspot minima. The eleven-year sunspot cycle has been traced in the growth rings of trees. Stronger ultraviolet radiation accompanies sunspot activity and the aurora borealis displays are more numerous and brilliant, probably due to an increased bombardment of electrified particles. Such influences are now generally accepted as proved. It is the problem of sunspot correlation with such human affairs as stockmarket trends that leads out on the limb...
Numerous means have been utilized for destroying the micro-organisms responsible for such infection, but of these, treatment of the air with ultraviolet light seems at present to be the most promising
...reasoned Drs. Kenneth Cooley of Rochester and Kristian Gosta Hansson of Cornell. To physical therapists convened in Cincinnati last week Dr. Hansson described a machine designed by himself and his associate which pumps blood out of one arm, irradiates it with germicidal ultraviolet rays, puts it back in the other arm. Citrate of sodium introduced into the blood as it leaves the vein prevents coagulation. ''It is for the future," said Dr. Hansson, "to show what can be accomplished. One difficulty in experiments was that we didn't know the safe amount of radiation to give...
...start with derivatives of coal. All end, by means of different patented processes, with a substance called methyl methacrylate. This can be molded into lenses, rods, sheets or odd shapes. It is transparent to ultraviolet light as well as to the whole visible spectrum. It is lightweight, slightly flexible, can endure pounding, resists corrosion. It is softer than glass and scratches easily. But it can be repolished to its original brilliancy and translucency...
...failure to penetrate beyond a transition zone of light and heavy atmosphere, he expressed a conviction that with the accessibility to a greater elevation a more distinct transformation would be evident. Results of the recent flight yielded valuable specimens of ozone, a high oxygen layer which deflects ultraviolet rays, and revealed the presence of living spores and bacteria at the highest altitudes...