29 November 2025: This day in history
1877: US inventor Thomas Edison demonstrates his hand-cranked phonograph for the first time 1910: The first US patent for a traffic light system is issued to Chicago engineer Ernest Sirrine [1] 1935: Physicist Erwin Schrödinger publishes his famous thought experiment “Schrödinger’s cat”, a paradox that illustrates the problem of the Copenhagen interpretation of quantum mechanics […]

















