Invention and Engineering
Franz Reuleaux (French: [ʁœlo]; German: [ʁøˈloː]; 30 September 1829 – 20 August 1905) was a German mechanical engineer and a lecturer at Technische Hochschule Berlin (today Technische Universität Berlin), later appointed as the president of the academy. He was often called the father of kinematics. He was a leader in his profession, contributing to many important domains of science and knowledge. Today, he may be best remembered for the Reuleaux triangle, a curve of constant width that he helped develop as a useful mechanical form.
Cylindrical grinder.
Dye-sensitized solar cell.
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