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Thomsen's theorem, named after Gerhard Thomsen, is a theorem in elementary geometry. It shows that a certain path constructed by line segments being parallel to the edges of a triangle always ends up at its starting point.
For N = 3, electrons reside at the vertices of an equilateral triangle about any great circle. [3] The great circle is often considered to define an equator about the sphere and the two points perpendicular to the plane are often considered poles to aid in discussions about the electrostatic configurations of many- N electron solutions.
The Pappus configuration is the configuration of 9 lines and 9 points that occurs in Pappus's theorem, with each line meeting 3 of the points and each point meeting 3 lines. In general, the Pappus line does not pass through the point of intersection of A B C {\displaystyle ABC} and a b c {\displaystyle abc} . [ 3 ]
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 Equations of Josiah Willard Gibbs: the Kelvin equation is the constant temperature case, and the Gibbs–Thomson equation is the constant pressure case. [1]
In fluid dynamics the Milne-Thomson circle theorem or the circle theorem is a statement giving a new stream function for a fluid flow when a cylinder is placed into that flow. [ 1 ] [ 2 ] It was named after the English mathematician L. M. Milne-Thomson .
The experimental objections to the Thomsen–Berthelot principle include incomplete dissociation, reversibility, and spontaneous endothermic processes. [2] Such cases were dismissed by orthodox thermochemist as outliers not covered by the principle, or the experiments were manipulated to fit it through with somewhat contrived justifications was later disproved. [2]
Thomsen served on the Copenhagen City Council from 1861 to 1894, to which he lent his expertise in a number of areas during the city's development. [5] Katherine Alice Burke translated his book on systematic research in thermochemistry into English. This translation appeared in print in 1905. [6]
Christian Jürgensen Thomsen (29 December 1788 – 21 May 1865) was a Danish antiquarian who developed early archaeological techniques and methods. In 1816 he was appointed head of 'antiquarian' collections which later developed into the National Museum of Denmark in Copenhagen .