Johannes Franz Hartmann

German astronomer (1865–1936).

Born January 11th, 1865 in Erfurt.

Died September 13th, 1936 at 71 years old in Göttingen.

Occupations
astronomer, physicist, university teacher

To the most trivial actions, attach the devotion and mindfulness of a hundred monks. To matters of life and death, attach a sense of humor. Zhuangzi