1925
Heisenberg founds quantum mechanics
On a hayfever retreat to the North Sea island of Heligoland, Werner Heisenberg worked out the mathematics of atomic behavior as arrays of numbers.
Hubble shows the universe is expanding
Using the hundred-inch telescope at Mount Wilson, Edwin Hubble proved that Andromeda was a separate galaxy outside the Milky Way, not a nebula inside it.
Great Gatsby published
F.
Scopes Monkey Trial
In Dayton, Tennessee, a young biology teacher was prosecuted for teaching evolution.
Surrealist Manifesto
Andre Breton's group in Paris published a statement announcing a new movement that would free the imagination from the logic of waking life by drawing…
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Frequently asked
What happened in the year 1925?
Saeculum lists 5 events from 1925. The most significant is Heisenberg founds quantum mechanics: On a hayfever retreat to the North Sea island of Heligoland, Werner Heisenberg worked out the mathematics of atomic behavior as arrays of numbers.
What era was 1925 part of?
1925 falls within the Modern Era (1901-2000). World wars, cold war, and the splitting of the atom.
Which regions saw notable events in 1925?
The events from 1925 span Europe and North America.