Olay
Angelo Secchi
Astronomer Angelo Secchi demonstrates the Secchi disk, which measures water clarity, aboard Pope Pius IX's yacht, the L'Immaculata Concezion.
20 Nisan — Tarihte Bugün
Geçmişte bugün yaşanan olaylar, doğumlar, ölümler ve tatiller. Türkçe ve İngilizce Vikipedi kaynaklı kapsamlı arşiv.
49
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162
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81
Ölüm
13
Tatil
23
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20 Nisan 2026 · İngilizce Vikipedi · 328 kayıt · Sayfa 26 / 33
Olay
Louis Pasteur
Louis Pasteur and Claude Bernard complete the experiment disproving the theory of spontaneous generation.
Olay
American Civil War
American Civil War: Robert E. Lee resigns his commission in the United States Army in order to command the forces of the state of Virginia.
Olay
Thaddeus S. C. Lowe
Thaddeus S. C. Lowe, attempting to display the value of balloons, makes record journey, flying 900 miles from Cincinnati to South Carolina.
Doğum
Justinien Clary
Justinien de Clary, French target shooter (died 1933)
Doğum
Aleksandr Dianin
Alexander Dianin, Russian chemist (died 1918)
Doğum
Siegmund Lubin
Siegmund Lubin, Polish-American businessman, founded the Lubin Manufacturing Company (died 1923)
Doğum
Daniel Chester French
Daniel Chester French, American sculptor, designed the Lincoln statue (died 1931)
Doğum
Odilon Redon
Odilon Redon, French painter and illustrator (died 1916)
Doğum
Carol I of Romania
Carol I of Romania, King of Romania (died 1914)