New Gadgets Include Ventilated Shoe and Night Light
The report highlights a ventilated shoe with a heel air lift and valve intake, a 7 by 14 inch air pressure tank for home use, a low cost night light, an automatic French drip coffee maker, a transparent rain poncho for babies, a wheeled lawn sprayer, a soap holding shower brush, and urges readers to request Gadget Bulletin 421 from Science Service for more information.
MENTIONED IN THIS ARTICLE
Science Service
St. N W
Washington, D. C
Early American emblems and the rattlesnake motto
The rattlesnake served as a national emblem before the eagle. During the Revolution era a yellow flag bore a coiled snake and the motto Dont tread on me. Earlier political cartoons showed the colonies fractured under the Unite or die motto.
MENTIONED IN THIS ARTICLE
Seaboard
Lightweight Concrete Opens Path to Taller Cheaper Buildings
Lightweight aggregates such as expanded perlite pumice and vermiculite reduce concrete weight by up to 75 percent improve insulation and ease molding. Air entraining agents permit higher strength with less water while maintaining workability, though bonding to steel reinforcement varies.
MENTIONED IN THIS ARTICLE
National Bureau of Standards
Mahway
Tuures
Siigir
Pantheon
Rome
Paritie
Certan
Fast
Middle West
Bureau of Reclamation
Housing and Home Finance Agency
Science Service
Prudential Life Insurance
Los Angeles
Home Made DDT Dusting Device For Pest Control
Junior scientists are urged to join a national drive against disease carrying flies by making a dust duster from common items. The article warns that DDT dusts kill beneficial insects and advises careful use, air on breeding grounds and plants, and outlines simple construction steps for a dusting device.
MENTIONED IN THIS ARTICLE
Science Service
Overgrazing Destroys Grass Roots Say Nebraska Scientists
University of Nebraska botanists J E Weaver and R W Darland describe tests on sod blocks to measure root renewal under grazing. Overgrazed grasses show shorter roots and lower weight, while excessive clipping reduces root numbers. rest periods help pasture recovery. They note partial rest or complete removal of livestock in extreme cases.
MENTIONED IN THIS ARTICLE
University of Nebraska
J. E. Weaver
R. W. Darland
Science Service
New German Science Group Honors Planck
German scientists formed the Max Planck Society for the Advancement of Science to replace the Kaiser Wilhelm Society. Based in Göttingen, it guarantees unfettered research freedom and aims to attract about 25 former Kaiser Wilhelm institutes while operating under Allied Control Council rules.
MENTIONED IN THIS ARTICLE
Max Planck Society For the Advancement of Science
Kaiser Wilhelm Society
Goettingen
Max Planck
Max Planck Society
Bitonia
Control Council
Allied Control Authority
Also Mentioned on This Page
By Science Service
Martha G. Morrow
N. W
By Joseph H. Kraus
Science Clubs of America
Planck
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