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Ehrenfest, Paul

(Encyclopedia) Ehrenfest, PaulEhrenfest, Paulpoul āˈrənfĕst [key], 1880–1933, Austrian physicist. In 1904, Ehrenfest received his doctorate in theoretical physics in Vienna and married the Russian…

Hahn, Otto

(Encyclopedia) Hahn, OttoHahn, Ottoôˈtō hän [key], 1879–1968, German chemist and physicist. His important contributions in the field of radioactivity include the discovery of several radioactive…

Hänsch, Theodor Wolfgang

(Encyclopedia) Hänsch, Theodor Wolfgang, 1941–, German physicist, Ph.D. Heidelberg, 1969. He was a professor at Stanford from 1975 to 1986 and then became head of the Max Planck Institute for Quantum…

Neher, Edwin

(Encyclopedia) Neher, Edwin, 1944–, German biophysicist, Ph.D. Technical Univ. of Munich, 1970. He has been a researcher at the Max Planck Institute for Biophysical Chemistry, Göttingen, Germany,…

Paneth, Friedrich Adolf

(Encyclopedia) Paneth, Friedrich AdolfPaneth, Friedrich Adolffrēˈdrĭkh äˈdôlf päˈnĕt [key], 1887–1958, Austrian chemist. He was educated at Vienna, Munich, and Glasgow. He held a number of teaching…

Taylor, Isaac

(Encyclopedia) Taylor, Isaac, 1829–1901, English clergyman, antiquarian, and author, chiefly noted for researches in philology. In 1885, Taylor became canon of York. His inclination toward…

Ziegler, Karl

(Encyclopedia) Ziegler, KarlZiegler, Karltsēˈglər [key], 1898–1973, German chemist. Educated at the Univ. of Marburg, he taught at Heidelberg and Halle and for a short period at the Univ. of Chicago…

Respighi, Ottorino

(Encyclopedia) Respighi, OttorinoRespighi, Ottorinoôttōrēˈnō rāspēˈgē [key], 1879–1936, Italian composer, studied with Rimsky-Korsakov and Max Bruch. He was director (1924–25) of the Conservatory of…

Geometry: Hyperbolic Geometry: Saddle Up!

Hyperbolic Geometry: Saddle Up!GeometryWhose Geometry Is It Anyway?Non-Euclidean GeometryHyperbolic Geometry: Saddle Up!Spherical GeometryTaxi-Cab GeometryMax GeometryHow Many Shapes Can a Circle…

Theories of the Universe: Planck's Constant

Planck's ConstantTheories of the UniverseThat Old Quantum TheoryPlanck's ConstantPhotoelectric Effect Explained, the Quantum Strikes AgainBohr's Atomic Theory In Cracks in a Newtonian World, we…