CHRONOLOGY
1940
Dated events from the historical database.
1940-02-21 — High-Power Cavity Magnetron Successfully Tested in Birmingham1940-02-23 — Russell Ohl Observes the p–n Junction in Silicon1940-03-12 — Moscow Peace Treaty with Finland1940-04-09 — Invasion of Denmark and Norway1940-04-10 — First Naval Battle of Narvik1940-04-13 — Second Naval Battle of Narvik1940-04-14 — Allied Landing at Namsos1940-04-27 — Allied Withdrawal from Central Norway1940-04-30 — Sealing of the Łódź Ghetto1940-05-10 — German Offensive in France and the Benelux1940-05-14 — Capitulation of the Netherlands1940-05-15 — Nylon Stockings Go on Mass Sale1940-05-26 — Evacuation from Dunkirk1940-05-28 — Allies Recapture Narvik1940-06-10 — Italy Enters the War1940-06-14 — Soviet Ultimatum to Lithuania1940-06-22 — French Armistice with Germany1940-06-28 — Romania Agrees to Cede Bessarabia and Northern Bukovina1940-07-10 — Battle of Britain1940-08-27 — First Flight of the Caproni Campini N.1 Experimental Jet Aircraft1940-08-29 — Marl Plant Produces Its First Bales of Buna Synthetic Rubber1940-09-07 — Beginning of the London Blitz1940-09-11 — Bell Labs Publicly Demonstrates Remote Computing over Telephone Lines1940-09-23 — American Bantam Delivers the First Prototype of the Future Jeep1940-09-27 — Tripartite Pact1940-10-28 — Italian Invasion of Greece1940-11-15 — Warsaw Ghetto Sealed