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Ehlers-Geren-Sachs theorem

Ehlers-Geren-Sachs theorem proper noun: a theorem showing that if, in a given universe, all freely falling observers measure the cosmic background radiation to have exactly the same properties in all directions (isotropic), then that universe is an isotropic and homogeneous FLRW spacetime.

Proper noun

the Ehlers-Geren-Sachs theorem

  1. A theorem showing that if, in a given universe, all freely falling observers measure the cosmic background radiation to have exactly the same properties in all directions (isotropic), then that universe is an isotropic and homogeneous FLRW spacetime.

Origin of Ehlers-Geren-Sachs theorem

Published in 1968 by Jürgen Ehlers, P. Geren, and Rainer K. Sachs.

Questions about Ehlers-Geren-Sachs theorem

What does Ehlers-Geren-Sachs theorem mean?
Ehlers-Geren-Sachs theorem means a theorem showing that if, in a given universe, all freely falling observers measure the cosmic background radiation to have exactly the same properties in all directions (isotropic), then that universe is an isotropic and homogeneous FLRW spacetime.
What part of speech is Ehlers-Geren-Sachs theorem?
Ehlers-Geren-Sachs theorem is a proper noun.

Words near Ehlers-Geren-Sachs theorem in the dictionary

  1. Ehlens
  2. Ehler
  3. Ehlers
  4. Ehlers-Danlos syndrome
  5. Ehlers-Danlos syndromes
  6. Ehlers-Geren-Sachs theorem
  7. Ehlert
  8. Ehlerts
  9. Ehles
  10. Ehlinger
  11. Ehlingers

Source and license

Adapted from Wiktionary: Ehlers-Geren-Sachs theorem (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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