New Gadgets and Hardware Promises Sharper Long-Lasting Tools
A Gadget Bulletin 483 advertises new items including three year no sharpen steel blades made by a high-temperature deep-freeze process, a glass fiber dielectric tape for electrical use, a speedometer for Army tanks with a trailing bicycle wheel generator, a sleeve saver wood insert, a chromatic accordion for learners, fir-scented Christmas wrapping paper, a telescoping rifle sight, home laxes in a pressurized can, a carnauba wax finish, and numbered electric wire for easy installations.
Centrifugal and Centripetal Forces Explained
A Science Service explanation contrasts centrifugal force with centripetal force. It notes centrifugal separates lighter cream from milk and aids washing machine spin dry, while centripetal keeps Earth and other bodies in orbit around the Sun.
MENTIONED IN THIS ARTICLE
Science Service
Wood and modified woods promise future use amid shortages
A Science Service summary discusses reinforced wood types Staypak Compreg and resin treated composites. It explains impregnation with phenol formaldehyde mixes, stabilization to minimize swelling, drying and curing, and the role of forests, new species like balsa and lignum vitae, and advances in rot and insect prevention, plus waste utilization for chemicals.
MENTIONED IN THIS ARTICLE
Forest Products Laboratory
United States
Central
South America
South
America
Yale University School of Forestry
Hemisphere
George A. Garratt
U. S. Forest Products Laboratory
Madison
Wis
Western Pine Association
Portland
Ore
Science Service
Eliminate Dry Rot By Controlling Moisture And Ventilation
A guide explains that wood decay comes from fungi requiring about 25 percent moisture. It recommends soil covering with asphalt roofing paper as a vapor barrier and adds ventilation rules for crawl spaces to prevent condensation. Regular checks ensure the barrier works and heating savings justify the method.
MENTIONED IN THIS ARTICLE
Carl Hartley
Bureau of Plant Industry
U. S. Department of Agriculture
National Research Council
Office of Naval Research
National Academy of Sciences
Washington, D. C
Science Service
Nature Ramblings 44 Prank Thone
The editors honor Dr. Frank Thone and present a selection from his Nature Ramblings. The piece surveys how humans name natural objects after artificial images and uses examples across fish and plants, noting irony in some cases and occasional reversals of the naming process.
MENTIONED IN THIS ARTICLE
Frank Thone
Dr. Thone
Nature
Tobacco compost boosts mushroom growth in Scotland
Scottish Mushroom Laboratories at Glasgow developed synthetic compost using tobacco stems and grain to replace scarce manure. Mushrooms grown on tobacco or grain compost mature faster, reducing disease exposure and promising a finer mushroom strain than traditional manure beds.
MENTIONED IN THIS ARTICLE
Scotland
Scottish Mushroom Laboratories
Glasgow
Bears beg from tourists at Yellowstone for first time
Grizzly bears have reportedly joined black bears in pan handling at Yellowstone National Park this summer. Visitors have mistaken the cinnamon phase of black bears for grizzlies in the past, but this season marks the first observed instance of grizzly bears begging from tourists.
MENTIONED IN THIS ARTICLE
Science Service
Yellowstone National
Central American Corn Pest Worries U S Scientists
U S scientists monitor a DDT resistant corn pest, the maggot larva of a small banded wing fly, found in Guatemala, El Salvador, Honduras, and Costa Rica. Infestation can kill seedlings by destroying the terminal growing point, with losses up to 98 percent reported in Guatemala. DDT fails to deter it. a 6 percent gamma isomer of benzene hexachloride in talc shows tentative promise as a seedling treatment.
MENTIONED IN THIS ARTICLE
U. S
Rio Grande
Iowa Corn Research Institute
Guatemala
el Salvador
Honduras
Costa Rica
Ately
Science Service
Students Learn Polio Facts From Science Unit
Washington Irving High School science clubs used a National Foundation for Infantile Paralysis unit to study poliomyelitis. They learned the virus is widespread but immunity exists, that the disease need not cripple all, and that researchers are pursuing a preventive. They drew charts to show how polio affects motor nerve cells.
MENTIONED IN THIS ARTICLE
New York City
Washington Irving High School
National Foundation For
Science Clubs of America
Also Mentioned on This Page
N St
N. W
A. C. Monahan
Wood
By Joseph H. Kraus
Science Service Home Science Editor
Gatanace
Sarvice
By Science Service
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