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Gibbs–Thomson Equation
The Gibbs–Thomson effect, in common physics usage, refers to variations in vapor pressure or chemical potential across a curved surface or interface. The existence of a positive interfacial energy will increase the energy required to form small particles with high curvature, and these particles will exhibit an increased vapor pressure. See Ostwald–Freundlich equation. More specifically, the Gibbs–Thomson effect refers to the observation that small crystals are in equilibrium with their liquid melt at a lower temperature than large crystals. In cases of confined geometry, such as liquids contained within porous media, this leads to a depression in the freezing point / melting point that is inversely proportional to the pore size, as given by the Gibbs–Thomson equation. Introduction The technique is closely related to using gas adsorption to measure pore sizes, but uses the Gibbs–Thomson equation rather than the Kelvin equation. They are both particular cases of the Gibbs Equ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physics
Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." Physics is one of the most fundamental scientific disciplines, with its main goal being to understand how the universe behaves. "Physics is one of the most fundamental of the sciences. Scientists of all disciplines use the ideas of physics, including chemists who study the structure of molecules, paleontologists who try to reconstruct how dinosaurs walked, and climatologists who study how human activities affect the atmosphere and oceans. Physics is also the foundation of all engineering and technology. No engineer could design a flat-screen TV, an interplanetary spacecraft, or even a better mousetrap without first understanding the basic laws of physic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornelio August Doelter
Cornelio August Severinus Doelter, Doelter y Cisterich or Cisterich y de la Torre (16 September 1850 – 8 August 1930) was a Caribbean born Austrian geologist who specialized in chemical mineralogy and petrology, serving as a professor at the University of Graz, Universities of Graz and Vienna. He conducted pioneering experiments in synthetic mineralogy and petrology by melting down rocks and allowing recrystallization of mineral constituents. Life and work Doelter was born in Arroyo, Puerto Rico, Arroyo, Puerto Rico, where his father Carl August managed sugar and coffee plantations that originally belonging to his wife Francisca Maria de Cisterich y de la Torre. His mother was Spanish and his name was originally given as Doelter y Cisterich. The family moved to Karlsruhe in 1855 where Doelter studied at the Lyceum from 1860. From 1865 he studied at the Lycée St. Louis and the Lycée Bonaparte before joining the École Centrale Paris, École Centrale des Arts et Manufactures in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
