Ernst Bessel Hagen
Ernst Hagen | |
|---|---|
| Born | Carl Ernst Bessel Hagen January 31, 1851 |
| Died | January 15, 1923 (aged 71) |
| Alma mater | Heidelberg University |
| Known for | Hagen–Rubens relation |
| Parent | Adolf Hermann Hagen |
| Scientific career | |
| Fields | Physics Optics |
| Institutions | Dresden Polytechnikum |
| Doctoral advisor | Robert Bunsen |
Carl Ernst Bessel Hagen (who published under the name Ernst Hagen; 31 January 1851 – 15 January 1923) was a German applied and experimental physicist. With Heinrich Rubens, he identified the so-called Hagen–Rubens equation (1903).