New Gadgets and All-Metal Innovations Highlighted
A roundup of newly described devices includes an all metal thermometer with dual maximum and minimum pointers, a perforated aluminum tobacco pipe grate, an attachable reading lamp with adjustable illumination, a double casing electric bulb, a shower head with self cleaning features, a wall ventilator with plastic grille and behind it a three bladed propeller fan, a parachute aided cargo landing container that remains upright, transparent plastic instruments with good tone for violins and clarinets, and an air foam nozzle for firefighting. Readers can request Gadget Bulletin 337 from Science Service by sending a three cent stamp.
Cycloidal Propellers Turn Ships Like Sleds In Water
A new cycloidal propeller lets ships pivot in their own length and move backward or sideways. Developed by Dr. Frederick Kirsten after World War I and refined by Voith Schneider, it replaces rudders with a central control lever system, enabling instant turns and stops. German designs and captured plans influenced U S adoption for minesweepers and other craft.
MENTIONED IN THIS ARTICLE
Frederick Kirsten
University of Washington
Kirsten
U. S
Dr. Kirsten
Voith Schneider Company
Austria
Europe
Army Transportation Corps
Voith Schneider
Heidenheim
Germany
Ijmuinden
Holland
Fort Monroe
Virginia
U. S. Marine Engineering
Army
Navy
458
Puget Sound
Science Service
Penthouse test heats with automatic control system
A Minneapolis penthouse atop the Honeywell plant demonstrates a new domestic automatic heating system. It balances heat loss with input across oil coal or gas, using multiple delivery methods and constant indoor temperatures. The setup records humidity and environmental factors to control comfort.
MENTIONED IN THIS ARTICLE
America
Minneapolis- Honeywell Regulator Company
Minneapolis
Science Service
Yeast Fermentation Experiments For Light Bread
The article explains bread making as an ancient fermentation, detailing how yeast grows in dough to produce carbon dioxide. It provides a simple home experiment setup with a glass, saucer, and water to observe gas formation and compare different fermentable materials like sugar and starch.
MENTIONED IN THIS ARTICLE
Science Service
Sycamores shed leaves and seedballs in late season
The Sycamores drop their leaves now while keeping their year round bark and decorative seedballs that cling to the trees until spring. The seedballs release fuzzy showers and carry tiny seeds to new growth.
Crystal sugar gems and crystal flowers display
A Sugar Research Foundation project shows sugar and water solutions growing tiny crystal petals into lotus and chrysanthemum shapes under polarized light. The article explains how to make rock candy crystals at home using a string and a glass and notes some sugars do not crystallize. It warns refining sugar removes non crystallizable material and that crystals form best over days with steady conditions.
MENTIONED IN THIS ARTICLE
Science Service
Dehydrated Young Limas Superior to Mature Beans
U S Department of Agriculture tests show that dehydrating immature lima beans yields a dried product with better color flavor and texture than sun dried mature beans. The study notes 4 dried lima from immature beans outperform the traditional mature bean left on the vine.
MENTIONED IN THIS ARTICLE
U. S. Department of Agriculture
Also Mentioned on This Page
N St
N. W
Washington, D. C
Barbara M. Hall
By Science Service
Atlantic
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