New Gadgets and Innovations Highlight Portable Signals and Auto Parts
A portable three part traffic light uses a battery powered eight foot stand for temporary signals. A moisture meter gauges grain humidity with a dielectric scale. A leakproof plastic battery for lamps resists water and shrinks at end of life. An undercarriage unit for light aircraft combines landing gear and brake with air shock. An oxygen generating device for dangerous atmospheres relies on moisture activated chemistry. A locator buoy for downed airmen emits radio signals from a sea water battery. A gasoline purifier used in engines cleans fuel via helically wound ribbons. A radiation intensity meter warns of unsafe radium levels with audible and visual cues. For more information send a stamp for Gadget Bulletin 320.
Infra-Red Receivers Convert Invisible Light Into Image
A 1946 Science Service article explains snooperscopes and sniperscopes using infra red heat rays to form visible images. It covers wartime uses on ships and weapons, civilian applications, and the bolometer based heat detectors developed at Johns Hopkins, outlining how these devices translate infrared heat into pictures and sound signals.
MENTIONED IN THIS ARTICLE
Guardians of the Law
America
Alexander Graham Bell
Donald H. Andrews
Bell and Howell
Westinghouse
Johns Hopkins
Baltimore
Atlantic City
Science Service
Pests in Check due to wet spring and cold rains
Grasshoppers are not a major plague this summer as a cold wet spring slowed their development. Rains drown many nymphs when they emerge from egg masses and leave the rest vulnerable to disease in the ground.
MENTIONED IN THIS ARTICLE
U. S. Department of Agriculture
Luther Burbank
Remove Perspiration Stain With Ammonia or Vinegar
Perspiration stains spoil summer clothes but many can be removed at home. Fresh stains respond to ammonia fumes or diluted ammonia applied directly. vinegar works on set stains and may restore color though older stains are harder to shift.
MENTIONED IN THIS ARTICLE
U. S. Department of Agriculture
Junior Scientists Models Show How Quicksand Traps a Person
Junior Scientist explains quicksand action with two models from Maj. James R. Randolph. A large outdoor box shows water rising from below to wash out sand, trapping feet and requiring calm, with a back posture as the best survival approach.
MENTIONED IN THIS ARTICLE
James R. Randolph
Rensselaer Polytechnic Institute
Troy
N. Y
Hor
Ribbon towns could cut attack damage in atomic era
Scientists from the University of Chicago including Marshak Klein and Teller propose rebuilding large cities as 25 mile long ribbon towns spaced 25 miles apart. The plan disperses 15,000 residents per ribbon and places large industries underground to reduce casualties and maintain city life with updated transport networks.
MENTIONED IN THIS ARTICLE
By Science Service
Jacob Marshak
Lawrence R. Klein
Edward Teller
University of Chicago
Chicago
Not Afraid of Ghosts Swift Nest Found with Five Eggs
A white throated swift was found near Shandon Kern California with a nest holding five eggs. The nest appeared abandoned and the prior occupant died on the nest, leaving a mummified body. L T S and E Z Rett reported the find to the Barbara Museum of Natural History.
MENTIONED IN THIS ARTICLE
Shandon
Kern Calif
E. Z. Rett
Barbara Museum of Natural Story
Also Mentioned on This Page
England
N. W
Washington, D. C
Aem el
By A. C. Monahan
Haveeet
By Joseph H. Kraus
Science Clubs of America
Science Servil
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