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Heaviside–Lorentz units (or Lorentz–Heaviside units) constitute a system of units (particularly electromagnetic units) within CGS, named for Hendrik Antoon Lorentz and Oliver Heaviside. They share with CGS-Gaussian units the property that the electric constant ε0 and magnetic constant µ0 do not appear, having been incorporated implicitly into the electromagnetic quantities by the way they are defined. Heaviside–Lorentz units may be regarded as normalizing ε0 = 1 and µ0 = 1, while at the same time revising Maxwell's equations to use the speed of light c instead.

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  • Das Heaviside-Lorentz-Einheitensystem (HLE) ist ein physikalisches Einheitensystem. Es ist nach Oliver Heaviside und Hendrik Antoon Lorentz benannt. Ein Vorzug des Heaviside-Lorentz-Einheitensystems ist die weitestgehende Vereinfachung der Maxwell-Gleichungen. So fallen im Heaviside-Lorentz-Einheitensystem die -Faktoren weg bzw. nehmen den Wert 1 an. In Kraftgesetzen taucht dafür der Faktor 4π auf. Das HLE ist somit ein rationalisiertes Einheitensystem. In der theoretischen Physik, besonders der Hochenergiephysik, wird das Heaviside-Lorentz-Einheitensystem verwendet, um Herleitungen und die Struktur von Formeln klarer zu machen. Zum Vergleich kann anschließend ins Gaußsche Einheitensystem oder in das SI-Einheitensystem umgerechnet werden. (de)
  • Heaviside–Lorentz units (or Lorentz–Heaviside units) constitute a system of units (particularly electromagnetic units) within CGS, named for Hendrik Antoon Lorentz and Oliver Heaviside. They share with CGS-Gaussian units the property that the electric constant ε0 and magnetic constant µ0 do not appear, having been incorporated implicitly into the electromagnetic quantities by the way they are defined. Heaviside–Lorentz units may be regarded as normalizing ε0 = 1 and µ0 = 1, while at the same time revising Maxwell's equations to use the speed of light c instead. Heaviside–Lorentz units, like SI units but unlike Gaussian units, are rationalized, meaning that there are no factors of 4π appearing explicitly in Maxwell's equations. That these units are rationalized partly explains their appeal in quantum field theory: the Lagrangian underlying the theory does not have any factors of 4π in these units. Consequently, Heaviside–Lorentz units differ by factors of √4π in the definitions of the electric and magnetic fields and of electric charge. They are often used in relativistic calculations, and are used in particle physics. They are particularly convenient when performing calculations in spatial dimensions greater than three such as in string theory. (en)
  • 헤비사이드-로런츠 단위계(Heaviside-Lorentz單位系, Heaviside–Lorentz system of units)는 전자기학과 상대성이론에서 자주 쓰이는 단위계이다. 양자장론이나 상대론적 전자기학에서 유용하다. (ko)
  • Unidades de Lorentz–Heaviside (ou unidades de Heaviside–Lorentz ) constituem um sistema de unidades (particularmente unidades eletromagnéticas) dentro do CGS, nomeado por Hendrik Antoon Lorentz e Oliver Heaviside. Eles partilharam com CGS-Unidades Gaussianas a unidade da constante elétrica, ε0 e a , µ0 não aparece, tendo sida implicitamente incorporada no sistema de unidade e nas equações eletromagnéticas. As unidades de Lorentz–Heaviside podem ser consideradas normalizadoras de ε0 = 1 e µ0 = 1, ao mesmo tempo que revisam as equações de Maxwell, para usar a velocidade da luz, c como alternativa. Unidades de Lorentz–Heaviside, como as unidades do SI, mas ao contrário das , são racionalizadas, ou seja, não aparecem explicitamente fatores de 4π nas equações de Maxwell. O fato dessas unidades estarem sendo racionalizadas explica em parte seu apelo na : a teoria fundamental Lagrangiana não possui fatores de 4π nessas unidades. Consequentemente, unidades Lorentz–Heaviside diferem-se por fatores de √4π nas definições dos campos elétrico e magnético e de carga elétrica. São frequentemente utilizadas na cálculos e são a unidade utilizada na Física de alta energia (física de partícula). Particularmente, são convenientes quando realizado cálculos que consideram mais de três dimensões, como na Teoria das Cordas. (pt)
  • 洛伦兹-亥维赛单位制(或称亥维赛-洛伦兹单位制)是一种衍生自厘米-克-秒制的单位系统,主要用于电磁学领域。其得名于荷兰物理学家亨德里克·洛伦兹与英国数学家奥利弗·亥维赛。与同是衍生自厘米-克-秒制的高斯单位制类似,在使用这种单位制时,电常数ε0及磁常数µ0并不在方程中出现,而是整合于相关的单位中。相对于国际单位制,洛伦兹-亥维赛单位制可以视作调整麦克斯韦方程组,归一ε0与µ0,转而在麦克斯韦方程组中使用光速c的结果。 与国际单位制类似,洛伦兹-亥维赛单位制是有理化的,即在方程中不会出现系数4π。这一点与同是衍生自CGS制的高斯单位制不同。正是由于这一单位制是有理化的,其会特别符合量子场论的需求:在该理论所涉及的拉格朗日量中不会出现系数4π。同时,电荷、电磁场依据洛伦兹-亥维赛单位制所得到的定义也会由于系数√4π而发生改变。洛伦兹-亥维赛单位制在弦论这样计算所涉及的空间维度大于三的情形中特别适用,并且还常用于狭义相对论计算。 (zh)
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  • 헤비사이드-로런츠 단위계(Heaviside-Lorentz單位系, Heaviside–Lorentz system of units)는 전자기학과 상대성이론에서 자주 쓰이는 단위계이다. 양자장론이나 상대론적 전자기학에서 유용하다. (ko)
  • 洛伦兹-亥维赛单位制(或称亥维赛-洛伦兹单位制)是一种衍生自厘米-克-秒制的单位系统,主要用于电磁学领域。其得名于荷兰物理学家亨德里克·洛伦兹与英国数学家奥利弗·亥维赛。与同是衍生自厘米-克-秒制的高斯单位制类似,在使用这种单位制时,电常数ε0及磁常数µ0并不在方程中出现,而是整合于相关的单位中。相对于国际单位制,洛伦兹-亥维赛单位制可以视作调整麦克斯韦方程组,归一ε0与µ0,转而在麦克斯韦方程组中使用光速c的结果。 与国际单位制类似,洛伦兹-亥维赛单位制是有理化的,即在方程中不会出现系数4π。这一点与同是衍生自CGS制的高斯单位制不同。正是由于这一单位制是有理化的,其会特别符合量子场论的需求:在该理论所涉及的拉格朗日量中不会出现系数4π。同时,电荷、电磁场依据洛伦兹-亥维赛单位制所得到的定义也会由于系数√4π而发生改变。洛伦兹-亥维赛单位制在弦论这样计算所涉及的空间维度大于三的情形中特别适用,并且还常用于狭义相对论计算。 (zh)
  • Heaviside–Lorentz units (or Lorentz–Heaviside units) constitute a system of units (particularly electromagnetic units) within CGS, named for Hendrik Antoon Lorentz and Oliver Heaviside. They share with CGS-Gaussian units the property that the electric constant ε0 and magnetic constant µ0 do not appear, having been incorporated implicitly into the electromagnetic quantities by the way they are defined. Heaviside–Lorentz units may be regarded as normalizing ε0 = 1 and µ0 = 1, while at the same time revising Maxwell's equations to use the speed of light c instead. (en)
  • Das Heaviside-Lorentz-Einheitensystem (HLE) ist ein physikalisches Einheitensystem. Es ist nach Oliver Heaviside und Hendrik Antoon Lorentz benannt. Ein Vorzug des Heaviside-Lorentz-Einheitensystems ist die weitestgehende Vereinfachung der Maxwell-Gleichungen. So fallen im Heaviside-Lorentz-Einheitensystem die -Faktoren weg bzw. nehmen den Wert 1 an. In Kraftgesetzen taucht dafür der Faktor 4π auf. Das HLE ist somit ein rationalisiertes Einheitensystem. (de)
  • Unidades de Lorentz–Heaviside (ou unidades de Heaviside–Lorentz ) constituem um sistema de unidades (particularmente unidades eletromagnéticas) dentro do CGS, nomeado por Hendrik Antoon Lorentz e Oliver Heaviside. Eles partilharam com CGS-Unidades Gaussianas a unidade da constante elétrica, ε0 e a , µ0 não aparece, tendo sida implicitamente incorporada no sistema de unidade e nas equações eletromagnéticas. As unidades de Lorentz–Heaviside podem ser consideradas normalizadoras de ε0 = 1 e µ0 = 1, ao mesmo tempo que revisam as equações de Maxwell, para usar a velocidade da luz, c como alternativa. (pt)
rdfs:label
  • Heaviside-Lorentz-Einheitensystem (de)
  • Heaviside–Lorentz units (en)
  • 헤비사이드-로런츠 단위계 (ko)
  • Unidades de Lorentz-Heaviside (pt)
  • 洛伦兹-亥维赛单位制 (zh)
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