Spouse
Children
1866
| 1866 • The month concludes without having a full moon. |
1887
Jan 2
Age: 21y
|
marriageFriederich Wilhelm Roetzheim Chicago, Cook, Illinois, USA ⇓ 1 Source ⇓ |
| 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. |
1887
Jul 4
Age: 21y
birth of childTheodore Roetzheim Chicago, Cook, Illinois, USA ⇓ |
| 1887 • The New Gate is built in Jerusalem. |
1889
Feb 14
Age: 23y
birth of childPauline A Roetzheim Chicago, Cook, Illinois, USA ⇓ 1 Source ⇓ |
| 1889 • 30 – First Inter-Parliamentary Conference held. |
1900
Age: 33y
| 1900 • L. Frank Baum's The Wonderful Wizard of Oz is published in Chicago, the first of Baum's Oz books chronicling the fictional Land of Oz for children. |
1927
Age: 60y
| 1927 • João Ribeiro de Barros becomes the first non-European to make a transatlantic flight, flying from Genoa, Italy, to Fernando de Noronha, Brazil. |