President of Switzerland
Begins a one-year term as President of the Swiss Confederation.
Permanent historical records · Updated 2026-11-03
1933 in Switzerland
Explore 8 historical events and records for Switzerland in 1933.
Historical records for Switzerland in 1933
Sorted by month and day. Records with no month are shown last. Showing 8 of 8 unique records.
8Unique records
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2Named people on this page
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January
Other events (month unknown)
Dark Matter
Able to infer the average mass of galaxies within the cluster, and obtained a value about 160 times greater than expected from their luminosity, and proposed that most of the matter was dark
Dark Matter
Fritz Zwicky is the first to use the virial theorem to infer the existence of unseen matter, which he refers to as dunkle Materie dark matter.
Dark Matter
He estimated that there was about 400 times more mass than was visually observable. While examining the Coma galaxy cluster in 1933, Zwicky was the first to use the virial theorem to infer the existence of unseen matter, what is now called dark matter.
Dark Matter
Zwicky applies the virial theorem to the Coma cluster of galaxies and obtained evidence of unseen mass.
Dark Matter
Zwicky estimated the clusters total mass based on the motions of galaxies near its edge and compared that estimate to one based on the number of galaxies and total brightness of the cluster.
Dark Matter
Infers unseen mass in the Coma Cluster from galaxy velocities.
Virial Theorem
While examining the Coma galaxy cluster in 1933, Zwicky was the first to use the virial theorem to infer the existence of unseen matter, what is now called dark matter
How these records were prepared
Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.