Ernst Julius Cohen (Amsterdam, March 7, 1869 – March 5, 1944) was a Dutch chemist known for his work on the allotropy of metals. Cohen studied chemistry under Svante Arrhenius in Stockholm, Henri Moissan at Paris, and Jacobus Van't Hoff at Amsterdam. In 1893 he became Van't Hoff's assistant and in 1902 he became professor of Physical Chemistry at the University of Utrecht, a position which he held until his retirement in 1939. Throughout his life, Cohen studied the allotropy of tin.
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| - Ernst Julius Cohen (Amsterdam, March 7, 1869 – March 5, 1944) was a Dutch chemist known for his work on the allotropy of metals. Cohen studied chemistry under Svante Arrhenius in Stockholm, Henri Moissan at Paris, and Jacobus Van't Hoff at Amsterdam. In 1893 he became Van't Hoff's assistant and in 1902 he became professor of Physical Chemistry at the University of Utrecht, a position which he held until his retirement in 1939. Throughout his life, Cohen studied the allotropy of tin.
Cohen’s areas of research included polymorphism of both elements and compounds, photographic chemistry, electrochemistry, pizeochemistry, and the history of science. He published more than 400 papers and numerous books.
He was elected a Foreign Member of the Royal Society in 1926.
He died March 5, 1944 in a gas chamber at Auschwitz. (en)
- Ernst Julius Cohen (* 7. März 1869 in Amsterdam; † wahrscheinlich 5. März 1944 in Auschwitz) war ein niederländischer Chemiker.
Cohen arbeitete vor allem über die Allotropie von Metallen. (de)
- Ernst Julius Cohen (Amsterdam, 7 maart 1869 - Bergen-Belsen, 16 mei 1945) was een Nederlands scheikundige.
Cohen behaalde zijn doctoraat in 1883 aan de Universiteit van Amsterdam bij de Nobelprijswinnaar J.H. van 't Hoff op het proefschift Het bepalen van overgangspunten langs electrischen weg en de elektromotorische kracht bij scheikundige omzetting.
Hij werd in 1902 benoemd tot gewoon hoogleraar in Utrecht en werkte vooral aan de allotropie van metalen. Naast een aantal boeken schreef hij meer dan 400 artikelen.
Hij was de eerste voorzitter van de Nederlandse Chemische Vereniging (1903) en voorzitter van de Union Internationale de la Chimie pure et appliquée, opgericht in 1919. Zijn wetenschappelijke verdiensten vonden erkenning in het lidmaatschap van de Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) in 1913 en het verlenen van eredoctoraten o.a. van de universiteiten van Cambridge, Karlsruhe en Philadelphia.
In 1939 ging Cohen met emeritaat, waarvan hij niet lang heeft kunnen genieten. Als jood werd hij slachtoffer van het naziregime. In 1945 volgde zijn overlijden in een Duits concentratiekamp. (nl)
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| - niederländischer Chemiker (de)
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| - Ernst Julius Cohen (Amsterdam, March 7, 1869 – March 5, 1944) was a Dutch chemist known for his work on the allotropy of metals. Cohen studied chemistry under Svante Arrhenius in Stockholm, Henri Moissan at Paris, and Jacobus Van't Hoff at Amsterdam. In 1893 he became Van't Hoff's assistant and in 1902 he became professor of Physical Chemistry at the University of Utrecht, a position which he held until his retirement in 1939. Throughout his life, Cohen studied the allotropy of tin. (en)
- Ernst Julius Cohen (* 7. März 1869 in Amsterdam; † wahrscheinlich 5. März 1944 in Auschwitz) war ein niederländischer Chemiker. (de)
- Ernst Julius Cohen (Amsterdam, 7 maart 1869 - Bergen-Belsen, 16 mei 1945) was een Nederlands scheikundige. (nl)
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| - Ernst Cohen (en)
- Ernst Julius Cohen (de)
- Ernst Julius Cohen (nl)
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