New Gadgets And Machines Featured In Science Service Bulletin
A roundup of new devices including a touchless soap dispenser that triggers a beam to operate, a compact eraser tube on a motor shaft, a fast humidity sensor, chimneyless oil furnaces with vacuum draft, a lightweight plastic globe for navigators, anti slip rubber ring for hangers, a radio tele facs system for ship reporting, and a film sound recorder capable of multiple tracks. Readers may request Gadget Bulletin 314 by mail.
Lady's-slipper Orchid in Local Woods
The lady's-slipper Cypripedium, also called Venus' pet, is native to our woods and a member of the orchid family. While tropical Cypripediums are sold by florists, the native wildflowers here are just as fine and handsome.
Deadly Mist of 2 4 D Kills Weeds But Grass Survives
Science Service reports on the wide use of 2 4 D herbicide to kill broadleaf weeds while sparing grasses. It notes selective action, potential drawbacks to bent grasses, soil behavior, and comparisons with ammonium sulfamate. Farmers and homeowners weigh costs, concentrations, and application safety.
MENTIONED IN THIS ARTICLE
Uisubuicis
Junior Scientists Build Simple Glass Dropper Motor
A 1946 Science S article explains a beginner friendly electric motor you can assemble at home with no soldering. Using nails fiber washers a glass dropper and wire it guides readers through winding two armature coils and attaching brushes and a commutator to create a working motor.
MENTIONED IN THIS ARTICLE
Joseph H. Kraus
New Phase-Difference Microscope Opens Hidden Living Cell Details
Two rings build into the objective and light control reveal phase-difference images that show minute, unstained structures in living cells. The technology, seized from Germany and advanced by U S scientists, promises safer research use and potential applications in geology and propellant inspection.
MENTIONED IN THIS ARTICLE
Zeiss Optical Works
Jena
Germany
Col. Brice
Veterans’ Administration
F. Zernike
Science Service
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New York Harbor
Washington, D. C
Slipper of
Venus
Frank Thone
Axis
Weedone
Science Clubs of America
Martha G. Morrow
Gustave Guellich
Technical and Industrial Branch
Publication Board
Department of Commerce
National Bureau of Standards
Charles P. Saylor
Arthur Brice
The
Chemical
Fremont