Walter Grotrian, Date of Birth, Place of Birth, Date of Death
TweetWalter Grotrian
German astronomer
Date of Birth: 
Place of Birth: Aachen, North Rhine-Westphalia, Germany
About Walter Grotrian
- Walter Robert Wilhelm Grotrian (21 April 1890 in Aachen; †3 March 1954 in Potsdam) was a German astronomer and astrophysicist. Grotrian studied the emission line from the solar corona in the green region of the spectrum; this emission line could not be attributed to any known chemical element and was thought to be a new element (which scientists named "coronium").
- Grotrian and Bengt Edlén from Sweden demonstrated that the two observed emission lines arise from iron atoms that have lost about half their 26 electrons.
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