Fission Theory
Carries news of uranium fission to the United States.
Permanent historical records · Updated 2026-11-03
1939 in Denmark
Explore 5 historical events and records for Denmark in 1939.
Historical records for Denmark in 1939
Sorted by month and day. Records with no month are shown last. Showing 5 of 5 unique records.
5Unique records
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5Named events on this page
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January
Other events (month unknown)
Experimental Fission Verification in Copenhagen
Directs an institute whose new nuclear equipment enables one of the earliest experimental verifications of fission, linking theoretical interpretation with accelerator-based laboratory work.
Ionized Hydrogen Region Theory
Defines the characteristic volume now known as a Stromgren sphere.
Stromgren Sphere
Models ionized hydrogen regions surrounding hot stars.
Uranium Fission Theory
With John Wheeler, develops a theoretical account of nuclear fission and isotope-dependent neutron behaviour.
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.