Pierre Janssen
French astronomer and mathematician, solar studies
Born
February 22nd, 1824
201 years ago
Died
1907
118 years ago — 83 years old
Category
Scientists & Innovators
Country
France
Links & References
Born in 1824, an astronomer and mathematician contributed to the field of solar research. Developed a method for studying the solar spectrum using a spectroscope and discovered helium in the solar atmosphere. Participated in the 1868 solar eclipse expedition to India, which provided significant observations. Served as a professor and participated in various scientific societies throughout his career.
Discovered helium in the solar atmosphere
Conducted solar research using spectroscopes
Participated in solar eclipse expedition of 1868
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