1865 - 1936
Johannes Franz Hartmann German Astronomer
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Johannes Franz Hartmann is a member of the following lists: 1936 deaths, 1865 births and German physicists.
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Details
| Birthday |
11th January, 1865
|
| Birthplace |
Erfurt, Saxony
|
| Died |
13th September, 1936
|
| Place of Death |
Göttingen
|
| Zodiac Sign |
Capricorn
|
| Nationality |
German
|
| Occupation |
Astronomer
|
Johannes Franz Hartmann (January 11, 1865 – September 13, 1936) was a German physicist and astronomer. In 1904, while studying the spectroscopy of Delta Orionis he noticed that most of the spectrum had a shift, except the calcium lines, which he interpreted as indicating the presence of interstellar medium.
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