Word: ultraviolet
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Dates: during 1940-1949
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Wisconsin's big money-maker is a skinny, self-effacing biochemist named Harry Steenbock. Some 18 years ago he discovered that food could be enriched with vitamin D (especially useful in preventing rickets in children) by being treated with ultraviolet rays...
...future may be made only a few degrees cooler in summer, a few degrees warmer in winter. The most practical step cities can now take toward weather control, says he, is to get rid of their smoke (perhaps by underground smoke tunnels). So doing, they would get more ultraviolet radiation, better visibility, fewer fogs, probably less rain...
...Houses will be equipped, not only with air-conditioning apparatus, but also with ultraviolet-ray germ killers...
...Pilots and gunners were severely sunburned in early plastic airplane enclosures; new plastics screen out the ultraviolet rays intense at high, clear altitudes...
...Complete eye adaptation to darkness takes at least 25 minutes, is destroyed by even one flash of white light. Black light (ultraviolet rays) does not interfere...