Skip to main content

Features

Addressing Thousands Without Raising the Voice, Commercial Airplane Development and more

By Ralph Howard

Wireless Half Way 'Round the World

The Most Powerful Radio Station, Built at Bordeaux by the United States and Sold to France

By John W. Kean

Turning the Wheels of a Century Hence--I

What We May Expect to Do, and What We May Not, When the Fuel Is Exhausted

By C. H. Claudy

The Silent Teacher

How and Why the Motion Picture Is a Great Force in Explaining Technical Things

By Jerome Lachenbruch

San Francisco Goes to the Mountains

Some Details of the Lake Eleanor Dam, Part of a Comprehensive Water-Supply Scheme

By J. F. Springer

An Electrode that Bakes Itself

By A. R. Surface

Measuring Deflection with Interference Bands

By H. L. Van Keuren

Departments

  • Departments

    Correspondence - June 26, 1920

  • The Heavens in July, 1920

  • Inventions New and Interesting - June 26, 1920

  • Recently Patented Inventions - June 26, 1920

  • Index - June 26, 1920

  • Notes and Queries - June 26, 1920

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
June 1920

See the World from a Different Perspective

Subscribe to Scientific American MIND