别名:Robertson–Walker models
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Szekeres · source-snapshot-bc3404156f6e
已登记出处中的最早位置:§18.9 · zh-CN。
来源短摘录与定位
§18.9 · zh-CN · translation · unreviewed
宇宙学是把宇宙作为一个整体来研究[18]。通常假定,在最广泛的观测尺度上,宇宙是均匀且各向同性的——没有特定的位置或方向被 突出。假设广义相对论在这一整体尺度上适用,则具有均匀且各向同性空间截面的度量称为平坦罗伯逊–沃克模型(Robertson–Walker model)。其中最简单的是所谓的平坦模型
§18.9 · en · original_transcription · unreviewed
Cosmology is the study of the universe taken as a whole [18]. Generally it is assumed that on the broadest scale of observation the universe is homogeneous and isotropic – no particular positions or directions are singled out. Presuming that general relativity applies on this overall scale, the metrics that have homogeneous and isotropic spatial sections are known as flat Robertson–Walker models. The simplest of these are the so-called flat models