New Gadgets and Machines Highlighted by Science Service
A roundup of experimental devices includes a safe baby bottle warmer with a sturdy base, a large glow lamp with dual diffusion, a fiberglass insulated six slab dry ice cooled cold storage box, winged car testing to reduce tire wear, an electronic metronome using a thyratron tube, a visual flash baton and adjustable beat, a rapid barkuin method for Making denpention and resin, a centrifugal clutch for engines to improve oiling and heating, and a five tool workshop unit with a single motor for home use. Readers can request Gadget Bulletin 346 by mail.
Science Talent Search aptitude test questions
Test questions from the Sixth Annual Science Talent Search describe the challenging exam used to identify scientifically gifted high school seniors. It explains selection criteria, prizes, and the extensive process including personal data, essays, and recommendations, with instructions for attempting a subset of questions.
MENTIONED IN THIS ARTICLE
Teme Tien
Alitaal
Atod Lalit
Science Talent Institute
Washington
Westinghouse
Science Service
Science Clubs of America
Crystal Snow Crystals and Formation Heights
The passage explains how plain hexagonal and star-shaped crystals form at high, cold altitudes, while complex “fancy” crystals with many spikes develop lower where moisture is greater. It notes that large matted snowflakes result from thawing in warmer layers causing crystals to stick together.
Wood Pulp Forms Tiny Fibrils Revealed Under Electron Microscopy
Wood fibers yield fine internal fibrils when worn away. a thin gold film reveals 150 Angstrom thickest fibrils under an electron microscope. Dr P H Hermans notes distinct rod shaped particles about 50 Angstroms wide and 200 to 250 Angstroms apart in wood pulp samples.
MENTIONED IN THIS ARTICLE
By Science Service
P. H. Hermans
Institute For Cellulose Research
Utrecht
Netherlands
Hermans
Textile Research
Science Service
Junior Scientists Generate Static Electricity By Balloon Experiments
A guide from the Science Clubs of America explains charging rubber balloons by rubbing on wool, fur, silk, or coat sleeves. Demonstrations include balloon attraction to oppositely charged or grounded surfaces, suspension from ceilings, multiple balloons repelling, and crackling sounds as charge dissipates.
MENTIONED IN THIS ARTICLE
Science Service
Stone Belts Were Worn in Early Mexican Ceremonials
Dr. Gordon F. Ekholm of the American Museum of Natural History describes hundreds of stone yokes found from Mexico to Honduras used by athletes in the ball game. The U shaped and occasionally oval yokes weigh 40 to 60 pounds and fit around the hips with pads possible under the stone. The article notes the yokes’ uniform widths, their wearability, and suggests they aided distance throws, though their use predates the Conquest and game details remain uncertain.
MENTIONED IN THIS ARTICLE
Central America
Gordon F. Ekholm
American Museum of Natural History
Middle America
Mexican
Vera Cruz
Ekholm
Mexico
el Salvador
Honduras
Museum of the American Indian
Heye Foundation
American Anthropological Association
Science Service
Also Mentioned on This Page
N St
N. W
Washington, D. C
By Watson Davis
Spewun
Donee
Pluto
Saturn
Uranus
Cassiopeia
Pacific
Samarium
Ile
Muir
Adams
Roger J
Geenyton
Arthur H
Kettering
Mississippi Valley
By Joseph H. Kraus
Los Tuxtlas
This is just the beginning! Our collection holds over 300 years of history, including rare newspapers, obituaries, marriage records, birth records, and so much more—most of which you won’t find anywhere else!