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This newspaper page contains 9 articles. Subscribers can read the full text of each article.
Newspaper
Winchester Evening Star
Location
Winchester, Virginia, United States of America
Date
Jun 17, 1949
Page
10
A roundup of new devices includes a Fender protector with warnings buzzer, a remote control unit for TVs, a two half sphere shoe and gear cleaner, a rebound device for cold rubber, a transparent pocket fishing box, a modular oil can with visible fill, vinyl coated milk containers, a vinyl voice muffler for phones, and a short note offering Gadget Bulletin 471 for stamp requests.
Psychologists determine mental age by comparing what a child can do with the average child at a given age. IQ equals mental age divided by calendar age, so a child showing typical 6 year skills at age 8 has an IQ of 75, while a 10 year old performing as a 10 year old has an IQ of 100.
Science Service explains how poison ivy, a widespread perennial, resists traditional weed killers. It covers the new 2 4 5 T compound, its relation to 2 4 D, and the iron treatment as a preventive method, plus tips on identification and safety.
Learn to build a portable adjustable sundial with a latched gnomon and protractor. Use a ring as the adjustable arm, a compass for north, and measure shadows to lay hour marks for latitude 40° North.
The article recalls the 1909 proposal by Dr. George H. Shull to improve corn via crossing pure parental lines. It notes early debates between Shull and Dr. Edward M. East, the development of the double-cross method by Dr. Donald F. Jones, and Henry A. Wallace’s role in funding hybrid seed firms. Hybrid corn eventually surpassed open-pollinated varieties with about a 20 percent per acre yield gain.
Scientists at the Radiation Laboratory of the University of California report that plants favor the nonradioactive carbon 12 over carbon 14 when growing with carbon dioxide. The study shows increased uptake of carbon 12 and incorporation into plant tissue, confirming carbon 12’s dominant role among carbon isotopes.
Goldenrod, long seen as a hay fever bane, is found to impart a licorice flavor to candy and chewing gum through an oil extracted by the Science Service. This discovery highlights a pleasant new use for the plant in confections.
Cornell researchers tag male and female toads to study behavior. Dr. Edward C. Raney keeps life histories and notes a maximum journey of three quarters of a mile within two months. Adult toads grow about one eighth inch per year and peak growth at three to four years. He suggests adding toads to gardens to curb insect pests.
A small 33 pound air conditioning system developed by W. B. Connor Engineering Corp. recirculates cabin air on the Boeing Stratocruiser. Air passes through fiberglass dust filters and activated carbon to absorb odors, reducing outside air intake and easing temperature and pressure maintenance.
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