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Henri Alexandre Deslandres

Born: 24-Jul-1853
Birthplace: Paris, France
Died: 15-Jan-1948
Location of death: Paris, France
Cause of death: unspecified

Gender: Male
Race or Ethnicity: White
Occupation: Astronomer, Physicist

Nationality: France
Executive summary: Spectroheliograph

In 1893, astronomer Henri Alexandre Deslandres invented the spectroheliograph, an instrument used for taking photographs (called spectroheliograms) of the Sun at a single wavelength of light. He calculated the rotation rates of Jupiter, Uranus, and Saturn and its rings, and studied solar activity and the effects of military bombing on rainfall. His work formed the basis for empirical laws that describe banding patterns in molecular spectra.

    University: Ecole Polytechnique (1874)
    University: PhD, Sorbonne (1888)
    Scholar: Paris Observatory (1889-97)
    Scholar: Meudon Observatory (1897-1907)
    Administrator: Director of Meudon Observatory (1907-29)
    Administrator: Director of Paris Observatory (1927-29)

    Bruce Medal 1921
    Henry Draper Medal 1913
    Royal Astronomical Society Gold Medal 1913
    French Academy of Sciences President (1920)
    International Astronomical Union Vice President (1922-28)
    Royal Astronomical Society
    Royal Society
    Lunar Crater Crater Deslandres
    Asteroid Namesake 11763 Deslandres

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