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X Rays Reveal the Secrets Beneath its Paint

Identifying Shakespeare

Science in the Shape of Infra-red Photography and the X ray Brings to Light at Last the Real Man Beneath the Surface of a Series of Paintings of the Bard

By Charles Wisner Barrell

To Combat Noise

One Device Dissects Noises, Analyses Them, A Second Finds Vibration Sounds, A Third Determines Expansion of Metal Which Makes Hum

By James A. Bauble

Dust Clouds of Space

By Henry Norris Russell

The Carboniferous Mystery

Prints Roughly Resembling Human Footprints, and Found in Very Ancient Rocks, Would Greatly Add to Mans Antiquity

By Albert G. Ingalls

Four Fastest

Our Superior Modernized 75's

Re-Construction of Our Large Stocks of Wartime 75mm Guns Would Give Them Longer Range, High Elevation, Wide Traverse

By G. M. Barnes

Controlled Comfort for Workers

Electrons Dance the Rhumba

Klystron, Generator of Powerful Ultra High-Frequency Radio Waves, Useful in Blind Landing System for Planes

By Andrew R. Boone

The Pittsburgh of Old Palestine

American Archeological Excavations at an Arm of the Red Sea Bring to Light a Buried City with a Smelter in which King Solomon Refined his Copper

By Nelson Glueck

The Snow Cruiser, A Mobile Base for Antarctica


  • 50 Years Ago, January 1940

  • From the Editor

    Our Point of View, January 1940

  • Recommended

    Our Book Corner, January 1940

  • Departments

    Personalities in Science, January 1940

  • Versatile Eye-Testing Machine, Improved White Lead, and more

  • Camera Angles, January 1940

  • Telescoptics, January 1940

  • Current Bulletin Briefs, January 1940

  • Legal High-Lights, January 1940

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