Wilhelm Friedrich Philipp Pfeffer

See also: Pfeffer

Wilhelm Friedrich Philipp Pfeffer is a German Botaniste , born the March 9th 1845 with Grebenstein and dead the January 31st 1920 with Kassel.

It obtains its doctorate at the university of Göttingen. Raise Nathanael Pringsheim (1823-1894), it studies and made research with Marburg, Würzburg and Bonn. He becomes professor of Botanique to Tübingen and Basle before coming to teach in 1887 with Leipzig where he also directs the Botanical garden.

Pfeffer becomes member of the Royal Society in 1897 and is member corresponding of the Academy of Science of Paris. He is in particular the author of Handbuch der Pflanzenphysiologie (two volumes, 1881) and of Studien zür Energetik der Pflanze (1892).

He studies the phenomena of Osmose S and is one of the first to develop semi-porous membranes. He studies the osmotic pressures and shows that the pressure necessary to dilute sugar is proportional to its concentration. Pfeffer works in particular with Julius von Sachs (1832-1897) on the vegetable Physiologie. It tries out artificial nutritive mediums for the culture of the plants. He also studies the growth and the movements of the plants.

Source

Allen G. Debus (to dir.) (1968). World Who' S Who in Science. In Biographical Dictionary off Notable Scientists from Present Antiquity to the. Marquis-Who' S Who (Chicago): xvi + 1855 p.

November 25th 1897 -->

Random links: