World History DatabaseHistory Search
historysearch.co.uk visitors: —
Home›Albert Einstein›Years›1939

Albert Einstein · Year

1939

Albert Einstein records dated 1939, drawn directly from the World History Database source collection.

Albert Einstein in a 1912 portrait
Albert Einstein, 1912. Photograph by J. F. Langhans — public domain. Wikimedia Commons source.

Spherical Cluster Relativity Analysis

1939 · Princeton · United States of America · Astronomy

Studies a stationary spherical system of gravitating particles and argues that such configurations do not naturally form the Schwarzschild-type singular surface then under discussion.

Einstein-Szilard Letter

2 August 1939 · Long Island · United States of America · Nuclear

Signs the Einstein-Szilard letter warning President Roosevelt about uranium chain reactions and possible powerful bombs.

Explore the Einstein collection

Continue through the static indexes, theory explainers and source classifications.

Einstein homeTheory explainersEvents A–ZYearsPlacesPhysicsAstronomyTechnologyNuclear