1887
Apr 11
| 1887 • Heinrich Hertz discovers the photoelectric effect on the production and reception of electromagnetic (EM) waves (radio). This was an important step towards the understanding of the quantum nature of light. |
1915
Oct 6
Age: 28y
|
marriageMargaret Elizabeth Fitzpatrick Seattle, King, Washington, USA ⇓ 1 Source ⇓ |
| 1915 • October 14 – WWI: Battle of Loos: British forces take the French town of Loos but with substantial casualties and are unable to press their advantage. This is the first time the British use poison gas in World War I and also their first large-scale use of 'New' or Kitchener's Army units. |
about
Age: 31y
1919
Age: 31y
|
birth of childJohn Bagnall Jr. 2 Sources ⇓ |
| 1919 • Béla Kun's Hungarian Soviet Republic collapses. |
1920
Age: 32y
| 1920 • Polish–Soviet War: The Red Army retakes Kiev. |
1956
Mar 12
Age: 68y
| 1956 • In Yugoslavia, former prime minister Milovan Djilas is arrested after he criticizes Josip Broz Tito. |