Ludwig Rhumbler was born in 3 July - Frankfurt on July 3, 1864 and died on July 5, 1939 in München Germany. He studied in Marburg, Berlin and Strasbourg. At first he was equally interested in physics and biology, later specializing in microzoology. He was a pioneer in the study of fossil foraminifera and its ecology. During 1892 and 1906 he lectured at the Zoologisch-Zoot Omis Institute of the University of Goettingen on his systematic protozoa work. From 1906 to1926 he lectured on zoology at Institute of Zoology at the forestry faculty in Forest Hann. Müden, Germany. And in 1926 Rhumbler was the president of the German Zoological Society in Frankfort.
Ludwig Rhumbler supported a mechanistic conception of life, explaining food intake, living conditions, and learning ability of unicellular organisms using purely physical explanations and subject to natural selection. He conducted model experiments to arrive at his conclusions. For example, he showed that foreign particles were ingested by cells using molecular attraction, rather than surface tension as had been proposed.
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