Black and white photograph of Georg Bredig (1868-1944) and fellow chemists at the University of Heidelberg. Bredig is seated at the center of the photo, and the group of seven men who surround him are possibly Bredig's…

Photograph depicting a holiday celebration of the physical chemistry department at the University of Leipzig, 1898. The group of students and professors pose around a large table holding steins.

Georg Bredig…

Group photograph of the attendees of the 25th Foundation Anniversary of the Karlsruhe Chemist's Society. The photograph shows people in front of an academic building. The celebration took place in Reichbach, Alpthal,…

Black and white photograph of Georg Bredig (1868-1944) seated in the center of a group of men wearing suits and lab coats in a laboratory at the Technische Hochschule in Karlsruhe, Germany. Bredig has annotated the…

Black and white photograph of Georg Bredig (1868-1944) and fellow chemists at the Technische Hochschule, in Zürich, Switzerland. Bredig is seated and reading a book while his colleagues pose around him. Bredig has…

Black and white photograph of Georg Bredig (1868-1944) and fellow chemists at the Technische Hochschule, in Zürich, Switzerland. Bredig is seated and his colleagues are posed around him. Bredig has annotated the names…

Fading posed photograph of chemists at the University of Amsterdam, possibly at Jacobus van 't Hoff's (1852-1911) laboratory. Pictured standing, left to right are Thomas Ewan, Heinrich Jacob Goldschmidt (1857-1937),…

Black and white photograph depicting a group of chemists posing with glassware in a laboratory at the University of Leipzig in 1892. A handwritten caption on the back of the photograph identifies those pictured as "Dr.…

Alfred Stock (1876-1946) was a German inorganic chemist. He is known for his research in boron hydrides, mercury, and mercury poisoning. In 1926, Stock became the director of the chemistry department at Technische…

Portrait of Viktor Rothmund (1870-1927). Rothmund was an Austrian chemist and professor at the German University at Prague. He was a student under Wilhelm Ostwald (1853-1932) at the University of Leipzig with Georg…

Photograph of Svante Arrhenius (1859-1927) walking down a street in Stockholm, Sweden.

Svante Arrhenius is known as one of the founders of Physical Chemistry. In 1903, Arrhenius was the third person to be awarded the…

Yukichi Osaka was a Japanese physical chemist known for being a pioneer in his field and an avid supporter of the advancement of modern science in Japan. He was a student of Joji Sakurai (1853-1939), one of the first…

Black and white portrait of Gustav Heinrich Wiedemann (1826-1899). Wiedemann was a German physicist, scientific author, and professor. In 1877, he became the editor of Annalen der Physik und Chemie (Annals of Physics…

Third-grade class photograph in Zurich, 1911.

Photograph of a large group at a Christmas party for the physical chemistry department at the University of Leipzig. The group poses in a room decorated for Christmas with banquet tables set for a meal. Two duplicate…

Black and white photograph of the members of the Breakfast and Coffee Club from the physical chemistry department of Leipzig University in 1900. The people in the photograph pose on a staircase holding coffee cups.
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Group photograph depicting from left to right Gustav Kirchhoff (1824-1887), Robert Bunsen (1811-1899), Adolph Duflos (1802-1889), and Moritz Baumert (1818-1865) at the University of Breslau.

Baumert was a German…

Black and white photograph of Georg Bredig (1868-1944) seated and reading a book and Egon Elöd (1891-1960) standing and peering over his shoulder at the Technical University in Karlsruhe. To their right are glassware…

Portrait of Ernst Cohen (1869-1944), a Dutch scientist and professor, who was known for his research in the allotropy of tin. Cohen worked under Svante Arrhenius (1859-1927), Henri Moissan (1852-1907), and Jacobus van…

A group photograph of the attendees of Otto Bütschli's (1848-1918) 70th birthday party. Johann Adam Otto Bütschli was a German zoologist and professor at the University of Heidelberg. He specialized in invertebrates and…

Photograph of the physical chemistry building at the University of Leipzig, 1900. In front of the building, there is an unidentified man posing with a mailbox.

Four copies of a black and white photograph featuring Wilhelm Ostwald (1853-1932) standing with colleagues in front of a blackboard. Identified in the photograph by handwritten annotations from left to right are Wagner,…

Photograph of a founder's day celebration in Starkenberg Germany. Depicts men seated outdoors at a long banquet table. A sign at the end of the table reads "geheimratsecke," or "receding hairline" in English.

Portrait of Ernst Cohen (1869-1944) by Koene & Büttinghausen in the Netherlands.

Ernst Cohen, a Dutch scientist and professor, was known for his research on the allotropy of tin. Cohen worked under Svante Arrhenius…

Portrait of Ernst Cohen (1869-1944) by Koene & Büttinghausen in the Netherlands.

Ernst Cohen, a Dutch scientist and professor, was known for his research on the allotropy of tin. Cohen worked under Svante Arrhenius…