Johannes

Johannes Franz Hartmann

Johannes
#31,059
Most Influential Person Across History

Astronomer

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Johannes Franz Hartmann
Physics
#1064
Historical Rank
Astrophysics
#96
Historical Rank
Astronomy
#121
Historical Rank
physics Degrees
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  • Physics

Why Is Johannes Franz Hartmann Influential?

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According to Wikipedia, Johannes Franz Hartmann 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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What Schools Are Affiliated With Johannes Franz Hartmann?

Johannes Franz Hartmann is affiliated with the following schools: