Johannes Stark was a German physicist born in 1874 who made significant contributions to the fields of physics and electronics. He discovered the Doppler effect and the Stark effect, founded the acclaimed Yearbook of Radioactivity and Electronics, and received the Nobel Prize in Physics in 1919. Stark held several professorships throughout his career in Germany and established the Berlin Institute of Physics and Technology, serving as its president from 1933 to 1939.