Walter Robert Wilhelm Grotrian (21 April 1890 in Aachen; † 3 March 1954 in Potsdam) was a German astronomer and astrophysicist.
German physicists and chemists in 1920. Standing, left to right: Walter Grotrian, Wilhelm Westphal, Otto von Baeyer[de], Peter Pringsheim[de], Gustav Hertz. Sitting, left to right: Hertha Sponer, Albert Einstein, Ingrid and James Franck, Lise Meitner, Fritz Haber, Otto Hahn.
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.[1]
Named after Grotrian
The impact crater Grotrian on the Moon
The Grotrian diagram in atomic spectroscopy showing the allowed transitions between atomic energy levels
Character in "Time Keeps on Slippin'" episode of Futurama
Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
2019-2025 WikiSort.org - проект по пересортировке и дополнению контента Википедии