Word: ultraviolet
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
Chicago's Northwestern University last week announced successful tests of a "sunburnometer," a recording device to measure the intensity of the ultraviolet component of the sun's light which causes sunburn. The sunburn-causing wave lengths can be considered as the "health band" in the solar spectrum, mainly because it contains the still narrower band which produces vitamin D in the skin. Developed by Professors Walter S. Huxford and Robert Cashman, the "sunburnometer" is noi sensitive to visible light or to the short radiation on the other side of the sunburn band. It may also be used...
Although the meter contains a new type of photoelectric cell, of pure magnesium enclosed in corex glass, ultraviolet recorder: themselves are not especially new. But Professors Huxford & Cashman have started right out to get geographic comparisons. They find, for example, that Iowa and Nebraska are richer in sunburning sunlight than the Chicago region, that the uplands of South Dakota are richer still. They indicate their willingness to put their heads in a lion's mouth of uproarious dispute by comparing the healthfulness of Florida's sunshine with California...
...radiating his poultry pen with ultraviolet light, a farmer near Niles Center, Ill., raised chickens whose flesh was all white meat...
...That ultraviolet rays kill small organisms like bacteria and algae is one of those things which was discovered in the laboratory as a fact of pure science and is now being adapted to practical applications. Last week an article in the Electric Journal, abstracted in the Journal of the Franklin Institute, showed that ultraviolet "bacteria guns" are finding their way into industry...
Just as rats make excellent laboratory animals for nutrition research, mice for cancer and monkeys for poliomyelitis, so ferrets are invaluable to influenza investigators. Ferret reactions were the basis of Harvard's Dr. William Firth Wells's demonstration last month that ultraviolet radiation kills the unknown germ or virus which causes that disease (TIME, Aug. 3). But many doctors think it probable that some infectious agencies change their form in different environments. The question remained: While human influenza could be communicated to ferrets, could ferret influenza be communicated...