Scientific American Magazine Vol 161 Issue 1

Scientific American Magazine

Volume 161, Issue 1

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Features

Air Conditioning and Lights Tenderize Beef

Ersatz Motor Fuels

Europe's Desperate Nationalisms Force Use of Native Fuels, To Conserve Gasoline for Possible War, Result: Enorlnous Net Monetary Losses

Gustav Egloff

Lies -- Truths

Now that the Lie Detector Has Been Used by the Wichita Police for Three Years, How Successful Has it Proved? A Progress Report

Thomas Hayes Jaycox

The Future of Navies

Second of Two Parts: Carriers, Cruisers, Destroyers, Submarines, Ships Building, Dimensions, Armor, Armament, Comparisons

Oscar Parkes

Airplanes, Unlimited!

Molded Fuselages and Wings Make Possible Mass Production. Plastics Employed. 36,000 Planes a Year, Tremendous Wartime Significance

Forrest Davis

What Keeps the Stars Shining?

According to Bethe's Theory, the Most Notable Achievement of Theoretical Astrophysics of the Last Fifteen Years, It is Atomic Transfortations

Henry Norris Russell

Rubber's 'Little Brother'

Rubber-Like Material,Made of Limestone, Coke, Salt,Superior to Rubber in Several Ways, Not Yet Adapted to Automobile Tires

Florian E. Wood

Relativity--20 Years After

An Evaluation of the Achievements of the Special and General Theories of Relativity During the 20 Years which Have Elapsed since the First Direct Observational Test of the General Theory

H. P. Robertson

Looking for Trouble

The Great American Rite

Are Tonsils Useful? What Many Doctors Think About the Too Casual and Routine Removal of Tonsils, The Public Is Partly to Blame.

T. Swann Harding

Departments

Our Point of View, July 1939

50 Years Ago, July 1939

The Screen of Television, Small Arc Welder, and more

Camera Angles, July 1939

Camera Angles Round Table, July 1939

Our Book Corner, July 1939

Telescoptics, July 1939

Current Bulletin Briefs, July 1939

Legal High-Lights, July 1939