New Inventions Aimed at Home And School Demonstrations
The article describes compact devices resembling a flashlight that emit five inch radar like waves, a pencil lead substitute for metal writing, a tiny rod sharpening stone, a Pressuregraph with cathode ray oscilloscope to display engine performance, magnesium ladder rungs, an envelope opener, non drip faucets, a fishing line parachute, and a cold cathode fluorescent lighting fixture for commercial use. Readers are invited to request Gadget Bulletin 318 from Science Service by sending a stamp.
Persecuted Emblem Persecuted Emblem By Science Service
Americans recall the bald eagle on one day of the year yet many shoot at him the rest of the time. Once abundant, the eagle now survives only in remote areas like the Florida peninsula and Alaska coasts. Alaska stockmen and fisheries defend their claim of theft against the eagle while the U S Fish and Wildlife Service denies the charge.
MENTIONED IN THIS ARTICLE
Florida Peninsula
Alaska
U. S. Fish and Wildlife Service
Plastics Begin to Replace Metal in Printing Supplies
The article explains how lightweight resin plates replace metal type in printing, detailing plastic plate creation from original patterns, the molding and curing process, and advantages for speed and cost. It notes wartime use for propaganda and housing notices, with widespread adoption in centers nationwide.
MENTIONED IN THIS ARTICLE
Arabia
China
Uncle Sam
South America
Government Printing Office
Fremont Davis
Science Service
Gophers Help Revegetate Eroded Utah Ranges
Lincoln Ellison of the U S Forest Service reports on the Wasatch Plateau showing pocket gophers do not destroy vegetation enough to worsen erosion and may aid revegetation in some eroded spots. Overgrazing is the main erosion driver. gophers move about 34 percent of surface soil annually in representative sub alpine zones, with greatest impact where grazing exposes bare soil.
MENTIONED IN THIS ARTICLE
Lincoln Ellison
U. S. Forest Service
Ogden
Utah
Wasatch Plateau
Ellison
Wasatch
Science Service
Reflected Rays Cause Sunburn and Freckles
Water reflects invisible ultraviolet rays making shade sitters at risk. Noonday sun boosts burn when lying down, so short exposure is advised. Indian a State Medical Association urges gradual sun exposure, not more than ten minutes at first.
MENTIONED IN THIS ARTICLE
Indiana State Medical Association
Junior Scientist Guide Tests Insecticides For Effectiveness
A step by step home science method compares dusts and sprays like DDT rotenone using blotting paper disks and boxes. It instructs to apply dust or paint to disks, introduce insects, and record kill rates and times to judge effectiveness.
MENTIONED IN THIS ARTICLE
Science Service
Music Lovers Can Predict How Often Favorites Will Be Played
A Harvard study analyzes how conductors and orchestras balance familiar and new pieces. Dr Zipf finds programs trend toward repeated composers after ovations, with Beethoven and Brahms highlighted among frequent selections in a decade of Boston Symphony concerts under Serge Koussevitsky.
MENTIONED IN THIS ARTICLE
George Kingsley Zipt
Harvard University
Zipf
Journal of Abnormal and Social Psychology
Boston Symphony Orchestra
Serge Koussevitsky
Beethoven
Brahms
Science Service
Shielding Implemented After Excess X rays in Mobile Surveys
In mobile survey units more than 50 patients were x rayed in a day exposing technicians to unsafe roentgen levels. With up to ten times that number scanned daily, the U S Public Health Service recommended shielding in strategic spots using thin lead sheets.
MENTIONED IN THIS ARTICLE
U. S. Public Health Service
Also Mentioned on This Page
N St
N. W
Washington, D. C
Gagget
By Science Service
Martha G. Morrow
John Wesley Hyatt
Joseph H. Kraus
Science Clubs of America
Oauze
Lynwood M. Chace
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