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- Q503902 subject Q5838217.
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- Q503902 abstract "Ludvig Valentin Lorenz (January 18, 1829 – June 9, 1891) was a Danish mathematician and physicist. He developed mathematical formulae to describe phenomena such as the relation between the refraction of light and the density of a pure transparent substance, and the relation between a metal's electrical and thermal conductivity and temperature (Wiedemann–Franz–Lorenz law).Lorenz was born in Helsingør and studied at the Technical University in Copenhagen. He became professor at the Military Academy in Copenhagen 1876. From 1887, his research was funded by the Carlsberg Foundation.He investigated the mathematical description for light propagation through a single homogeneous medium and described the passage of light between different media. The formula for the mathematical relationship between the refractive index and the density of a medium was published by Lorenz in 1869 and by Hendrik Lorentz (who discovered it independently) in 1878 and is therefore called the Lorentz–Lorenz equation. Using his electromagnetic theory of light he stated what is known as the Lorenz gauge condition, and was able to derive a correct value for the velocity of light. He also developed a theory of light scattering, publishing it in Danish in 1890 and in French in his Collected Works, published in 1898. It was later independently rediscovered by Gustav Mie in 1908, so it is sometimes referred to as Lorenz–Mie theory.Additionally, Lorenz laid the foundations for ellipsometry by using Fresnel's theory of refraction to discover that light reflected by a thin transition layer between two media becomes elliptically polarized.".
- Q503902 birthDate "1829-01-18".
- Q503902 birthPlace Q26881.
- Q503902 birthPlace Q35.
- Q503902 deathDate "1891-06-09".
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- Q503902 thumbnail Ludvig_Valentin_Lorenz.jpg?width=300.
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- Q503902 birthDate "1829-01-18".
- Q503902 birthPlace Q26881.
- Q503902 birthPlace Q35.
- Q503902 deathDate "1891-06-09".
- Q503902 field Q169470.
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- Q503902 name "Ludvig Lorenz".
- Q503902 nationality Q35.
- Q503902 type Person.
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- Q503902 comment "Ludvig Valentin Lorenz (January 18, 1829 – June 9, 1891) was a Danish mathematician and physicist. He developed mathematical formulae to describe phenomena such as the relation between the refraction of light and the density of a pure transparent substance, and the relation between a metal's electrical and thermal conductivity and temperature (Wiedemann–Franz–Lorenz law).Lorenz was born in Helsingør and studied at the Technical University in Copenhagen.".
- Q503902 label "Ludvig Lorenz".
- Q503902 depiction Ludvig_Valentin_Lorenz.jpg.
- Q503902 name "Ludvig Lorenz".
