| Born | August 31, 1821 Potsdam, Kingdom of Prussia |
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| Died | September 8, 1894 (aged 73) Charlottenburg, German Empire |
| Residence | Germany |
| Nationality | Germany |
| Fields | Physics, physiology and psychology |
| Institutions | University of Königsberg University of Bonn University of Heidelberg University of Berlin |
| Alma mater | Royal Friedrich-Wilhelm Institute |
| Doctoral advisor | Johannes Peter Müller |
| Doctoral students | Albert Abraham Michelson Wilhelm Wien William James Heinrich Hertz Michael I. Pupin Friedrich Schottky Arthur Gordon Webster |
| Other notable students | Henry Augustus Rowland Wilhelm Wundt |
| Known for | Conservation of energy Helmholtz free energy |