Anisotropy of inertia for open systems

  • E. Eriksen
  • Ø. Grøn
Article
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Summary

The relativistic transformation of momentum and energy for open systems considered as continua of matter is studied. Generally the momentum and the energy of such systems do not transform as components of a four-vector, in the synchronous formulation. The calculations also show that, due to the relativity of simultaneity, the inertia of an open system with internal motion is direction dependent.

Анизотропия инерции для открытых систем

Резюме

Исследуется релятивистское преобразование импульса и энергии для открытых систем, рассматриваемых как сплошная среда. В общем случае импульс и энергия таких систем не преобразуются как компоненты четырех-вектора в синхронной формулировке. Вычисления показывают, что из-за относителсности одновременности инерция открытой системы в случае инерциального движения обладает ориентационной зависимостью.

Riassunto

Si studia la trasformazione relativistica dell’impulso e dell’energia per sistemi aperti considerati come continui di materia. Generalmente l’impulso e l’energia di tali sistemi non si trasformano come componenti di un quadrivettore, nella formulazione sincrona. I calcoli mostrano anche che, a causa della relatività della simultaneità, l’inerzia di un sistema aperto con movimento interno dipende dalla direzione.

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Copyright information

© Società Italiana di Fisica 1981

Authors and Affiliations

  • E. Eriksen
    • 1
  • Ø. Grøn
    • 1
  1. 1.Institute of PhysicsUniversity of OsloOsloNorway

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