A century of Nobel prize recipients. Chemistry, physics, and by Francis Leroy

By Francis Leroy

Celebrating a century of progressive contributions to our knowing of existence, the realm, and the universe, this encyclopedic table reference lines the discoveries that earned approximately 500 exclusive scientists Nobel honors within the components of chemistry, physics, and medication. the college of Library magazine referred to as it "...eye-catching... unique paintings, colourful captioned drawings of versions and constructions, and diagrams illustrate complicated clinical rules and should invite searching. ...great images and beautiful format..." This publication contains over 550 complete colour illustrations and pictures, and is a needs to for the library of any public, collage, company, or own library.

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Langmuir was then led to study the adsorption of gaseous molecules on solid surfaces in function of the temperature and pressure. This was the first description of the thermodynamic phenomena occurring at a gas - solid interface. These studies were to have a deep influence on the description and elucidation of the mechanisms of heterogeneous catalysis, which involve reactions between gas molecules activated by a solid catalyst. He thus developed an equation known as the "Langmuir isotherm", describing the parameters that determine the chemisorption of molecules to the surface of a solid.

Svedberg, this apparatus has been widely used to mesure the purity of cell components and to estimate their molecular sizes on the basis of sedimentation rate. results in physics. The 1926 Nobel Prize in Physics was indeed awarded to Jean-Baptiste Perrin (1926 Nobel Prize for Physics) for his work on colloids, and specifically for his determination of Avogadro's number based on Svedberg's work. 1927 Wieland, Heinrich (Pforzheim, Germany, June 4, 1877 Munich, August 5, 1957 ). German chemist. Son of a chemical pharmacist.

His career was interrupted during World War I. During this period he conducted research on fermentation processes in order to produce acetone and ethylic alcohol. He was to be appointed to a similar position in 1941-1945, with the task of studying combat gases. s s 14 - 15 3 6 2 1 147 -148 N 4 s s 5 S195 D102 H57 3 6 5 2 4 1 C Pepsin. A ribbon model of the proteolytic enzyme. The path of the ribbons describes the fold of the polypeptide chain which makes up the protein. In 1919 he began to study the digestive enzymes pepsin and trypsin, which he obtained in the crystalline state and which he proved to have a protein nature, thus confirming Sumner's views.

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