The Two-Page Letter That Started the Atomic Age
On August 2, 1939, Albert Einstein signed a letter to President Roosevelt warning that Germany might build an atomic bomb — a letter that set the Manhattan Project in motion.
Tagged: physics
The Spark in the Iron Ring
On August 29, 1831, Michael Faraday's notebook recorded the experiment that revealed electromagnetic induction — the principle behind nearly all the electricity in the modern grid.
The Paper That Rewrote Gravity Arrived on March 20, 1916
On March 20, 1916, Annalen der Physik received Einstein's "Foundation of the General Theory of Relativity," the paper that rewrote our understanding of gravity.
A Genius Is Born in Ulm, March 14, 1879
Albert Einstein was born in Ulm, Germany, on March 14, 1879 — a slow-speaking boy who would rewrite physics with a patent-office desk and four extraordinary papers.