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Battleship Types of Three World Powers

Dreadnoughts of the U. S. NAVY

A Two-Ocean Fleet is Our Nation's Ultimate Goal

By Walton L. Robinson

We Need More Physicists

Military Activity and Industrial Requirements Have Created an Unprecedented Demand

By E. U. Condon

Delayed Jump, Eyes

Of Strip to Magnet Demonstrates Atomic Change

Have you Heterophoria?

Eye Exercises Using New Light-Polarizing Vectographs Can Improve Depth Perception

By Everett White Melson

Sulfanilamide, Antibodies, and more

Why the New Drug is "Unfair to Bacteria"


North American Astronomers Assist at Opening of Mexico's New National Observatory

By Henry Norris Russell

Why are we Short of Aluminum?

Huge Quantities of Electricity are Needed to Reduce this Common Metal from its Ore

By Henry W. Roberts

Insulation, Plywood, and more

Board Made of Glass Replaces Cork

Industrial Trends, May 1942


Patents and Free Enterprise

Anti-Trust Laws Can Control Abuse of Patents Without the Necessity of Destroying Patent Rights

By William R. Ballard

Air-Conditioning Fish

Mechanical Means Used to Provide Oxygen, Keep Temperature Low When Transporting Hatchery Fish

By F. Wallace Taber

Ozone, Gasoline, and more

Still Much to be Learned About its Effects

Blind Rivets, Tap Reconditioner, and more

Can Be Set From One Side Only

Jet Propulsion

Italian Experiments With an Airplane That Uses No Propeller for Flight at High Altitudes

By Alexander Klemin

Templates, Multiple Mower, and more

Rapid Process Used in Aviation Industry


  • 50 Years Ago, May 1942

  • From the Editor

    Our Point of View, May 1942

  • Recommended

    Our Book Corner, May 1942

  • Departments

    Personalities in Industry, May 1942

  • Camera Angles, May 1942

  • Current Bulletin Briefs, May 1942

  • Telescoptics, May 1942

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