Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Johann_Josef_Loschmidt> ?p ?o. }
- Johann_Josef_Loschmidt abstract "Jan or Johann Josef Loschmidt (15 March 1821 – 8 July 1895), who referred to himself mostly as Josef Loschmidt (omitting his first name), was a notable Austrian scientist who performed ground-breaking work in chemistry, physics (thermodynamics, optics, electrodynamics), and crystal forms.Born in Carlsbad, a town located in the Austrian Empire (now Karlovy Vary, Czech Republic), Loschmidt became professor of physical chemistry at the University of Vienna in 1868. He had two early mentors. The first was a Bohemian priest, Adalbert Czech, who persuaded Loschmidt's parents to send young Josef to high school in the Piarist monastery in Schlackenwerth and, in 1837, to advanced high-school classes in Prague.This was followed by two years of philosophy and mathematics at Prague's Charles University, where Loschmidt met his second important mentor. This was the philosophy professor Franz S. Exner, whose eyesight was failing, and who asked Loschmidt to be his personal reader. Exner was known for his innovative school reforms, which included promoting mathematics and science as important subjects. He suggested to Loschmidt, who became a close personal friend, that he apply mathematics to psychological phenomena. In the process of doing this, he became a very able mathematician.His 1861 booklet, Chemische Studien ("chemical studies"), proposed two-dimensional representations for over 300 molecules in a style remarkably similar to that used by modern chemists. Among these were aromatic molecules such as benzene (C6H6), and related triazines. Loschmidt symbolized the benzene nucleus by a large circle, which he said was to indicate the yet-undetermined structure of the compound. Some have argued, however, that he intended this as the suggestion of a cyclical structure, four years before that of Kekulé, who is better known and is generally credited with the discovery of benzene's cyclic structure.In 1865, Loschmidt was the first to estimate the size of the molecules that make up the air: his result was only twice the true size, a remarkable feat given the approximations he had to make. His method allowed the size of any gas molecules to be related to measurable phenomena, and hence to determine how many molecules are present in a given volume of gas. This latter quantity is now known as the Loschmidt constant in his honour, and its modern value is 2.69 x 1019 molecules per cubic centimetre at standard temperature and pressure (STP).Loschmidt and his younger university colleague Ludwig Boltzmann became good friends. His critique of Boltzmann's attempt to derive the second law of thermodynamics from kinetic theory became famous as the "reversibility paradox". It led Boltzmann to his statistical concept of entropy as a logarithmic tally of the number of microscopic states corresponding to a given thermodynamic state.Loschmidt retired from university in 1891 and died in 1895 in Vienna. His only child had died before him at the age of ten.".
- Johann_Josef_Loschmidt alias "Loschmidt, Josef".
- Johann_Josef_Loschmidt birthDate "1821-03-15".
- Johann_Josef_Loschmidt birthPlace Austrian_Empire.
- Johann_Josef_Loschmidt birthPlace Czech_Republic.
- Johann_Josef_Loschmidt birthPlace Karlovy_Vary.
- Johann_Josef_Loschmidt birthYear "1821".
- Johann_Josef_Loschmidt deathDate "1895-07-08".
- Johann_Josef_Loschmidt deathPlace Austria.
- Johann_Josef_Loschmidt deathPlace Austria-Hungary.
- Johann_Josef_Loschmidt deathPlace Vienna.
- Johann_Josef_Loschmidt deathYear "1895".
- Johann_Josef_Loschmidt doctoralAdvisor Joseph_Stefan.
- Johann_Josef_Loschmidt field Chemistry.
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- Johann_Josef_Loschmidt alternativeNames "Loschmidt, Josef".
- Johann_Josef_Loschmidt birthDate "1821-03-15".
- Johann_Josef_Loschmidt birthPlace "Putschirn, Austrian Empire".
- Johann_Josef_Loschmidt caption "Johann Josef Loschmidt".
- Johann_Josef_Loschmidt dateOfBirth "1821-03-15".
- Johann_Josef_Loschmidt dateOfDeath "1895-07-08".
- Johann_Josef_Loschmidt deathDate "1895-07-08".
- Johann_Josef_Loschmidt deathPlace Austria-Hungary.
- Johann_Josef_Loschmidt deathPlace Vienna.
- Johann_Josef_Loschmidt doctoralAdvisor Joseph_Stefan.
- Johann_Josef_Loschmidt field Chemistry.
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- Johann_Josef_Loschmidt name "Johann Josef Loschmidt".
- Johann_Josef_Loschmidt name "Loschmidt, Johann Josef".
- Johann_Josef_Loschmidt nationality "Austrian".
- Johann_Josef_Loschmidt placeOfBirth "Počerny".
- Johann_Josef_Loschmidt placeOfDeath Austria.
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- Johann_Josef_Loschmidt shortDescription "Austrian chemist, physicist".
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- Johann_Josef_Loschmidt description "Austrian chemist, physicist".
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- Johann_Josef_Loschmidt comment "Jan or Johann Josef Loschmidt (15 March 1821 – 8 July 1895), who referred to himself mostly as Josef Loschmidt (omitting his first name), was a notable Austrian scientist who performed ground-breaking work in chemistry, physics (thermodynamics, optics, electrodynamics), and crystal forms.Born in Carlsbad, a town located in the Austrian Empire (now Karlovy Vary, Czech Republic), Loschmidt became professor of physical chemistry at the University of Vienna in 1868. He had two early mentors.".
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