New Machines And Gadgets in a Gadget Bulletin
A roundup of new consumer devices includes ready to use self spraying paint systems in portable pressure containers, a deep breath exerciser with a balloon tube, quick attach rope and anchor devices for cars, stain resistant white plastic shirt fronts, a plastic playpen toy with hexagonal internal tubes, a 24-compartment knitting box, a plastic binding unit for office use, and a liquid level transmitter for tanks. Readers may request Gadget Bulletin 468 by sending a three cent stamp to Science Service in Washington, D. C.
MENTIONED IN THIS ARTICLE
Science Service
N St
N. W
Washington, D. C
Resin meanings and sources in natural resins
A Science Service overview explains resin as sticky tree exudate forming dry residues. Pine trees of the South Atlantic and Gulf States supply about two thirds of world resin. Other resins include amber copal hammar kauri gum and synthetic resins reference.
MENTIONED IN THIS ARTICLE
South Atlantic
Gulf States
Science Service
Blockade and poisons curb rat threat in home defense
A wartime to modern guide urges year round war on rats through blockades of food and shelter. It advises sealing openings, storing food in metal or glass, outdoor prevention, and using red squill as the main poison with 1080 restricted to professionals and bait boxes for safety.
MENTIONED IN THIS ARTICLE
Washington
U. S
Antu
Mediterranean
Science Service
Early hay fever linked to grasses oaks and plantain pollen
Nature Ramblings describes the onset of hay fever in early summer caused by grasses, wind pollenated trees such as oaks, and the plantain weed. It notes grasses as the historic source of the name and explains differences between narrow and broad leaf plantains in pollen impact.
MENTIONED IN THIS ARTICLE
Science Service
Large Pacific eddies may boost sardine catches and sub detection
Large swirling eddies six to forty five miles wide in the Pacific off Southern California, charted by Dr. George F. McEwen, could increase sardine catches as marine life concentrates there. The eddies may aid submarine detection through improved sound predictions and water property forecasts.
MENTIONED IN THIS ARTICLE
Pacific Ocean
George F. McEwen
Scripps Institution of Oceanography
California
Dr. McEweny
Bikini Tests
Dr. McEwen
Science Service
You Can Do It Houses and Shelters For Birds
Birds help control pests and weed seeds making bird housing a smart investment. Build ready before next spring with ventilated, weather protected boxes from rough wood and suitable entrance sizes. Include removable roofs for cleaning, overhanging lids, and paint in gray brown or green to blend with surroundings.
MENTIONED IN THIS ARTICLE
Science Service
Bird House Sizing Guide by Species in the Field
A detailed chart lists bird house dimensions for species including Bluebirds Chickadees Wood ducks Flickers and more. It provides floor cavity sizes depth entrance position hole diameter and mounting height plus preferred locations from woodlands to open water and open sunlit areas.
Visible Sound Waves Through Schlieren Photography
Researchers Dr. R. Bowling Barnes and Dr. Charles J. Burton enhanced schlieren methods to visualize ultrasonic waves. The technique uses shadow pictures from light rays disrupted by air motion, linking sound and light wave phenomena. Their work, with the American Optical Society, appears in the Journal of Applied Physics.
MENTIONED IN THIS ARTICLE
R. Bowling Barnes
Charles J. Burton
American Optical Society
Southbridge
Mass
American Cyanamid Company
Journal of Applied Physics
Also Mentioned on This Page
By Science Service
Science Service Biology
Uncle Sucker
Aunty Borgia
Frank Jhon
Pacific
Joseph H. Kraus
Science Service Home Science
Bluebird
Swallow
Phoebe
Chickadee
Wren
Titmice
Bewick
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