Pu-238 First Isolated in Berkeley, California, December 14, 1940

World War II: Under the Molotov–Ribbentrop Pact, the Soviet Union presents an ultimatum to Romania requiring it to cede Bessarabia and the northern part of Bukovina. Date: June 26, 1940 Read more on Wikipedia → 📅 Other events on June 26 📅 Events on this day in 1940 📅 On This Day (Today) More events…

World War II: German fighters accidentally bomb the German city of Freiburg. Date: May 10, 1940 Read more on Wikipedia → 📅 Other events on May 10 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940Rotterdam Bombed by Luftwaffe, World War II, May 14, 1940Norway Debate Begins, Chamberlain…

World War II: Himara is captured by the Greek army. Date: December 22, 1940 Read more on Wikipedia → 📅 Other events on December 22 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940Operation Dynamo Begins: Dunkirk Evacuation and Battle Start, May 26, 1940Tacoma Narrows Bridge Collapses in…

World War II: The Hardest Day air battle, part of the Battle of Britain, takes place. At that point, it is the largest aerial engagement in history with heavy losses sustained on both sides. Date: August 18, 1940 Read more on Wikipedia → 📅 Other events on August 18 📅 Events on this day in…

World War II: Altmark incident: The German tanker Altmark is boarded by sailors from the British destroyer HMS Cossack. A total of 299 British prisoners are freed. Date: February 16, 1940 Read more on Wikipedia → 📅 Other events on February 16 📅 Events on this day in 1940 📅 On This Day (Today) More events…

George Stibitz pioneers the first remote operation of a computer. Date: September 9, 1940 Read more on Wikipedia → 📅 Other events on September 9 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940McCollum Memo Proposes U.S. Entry into WWII by Provoking Japan October 7, 1940California Opens First…