Abstract
This chapter is of a pedagogical nature. I will show how the key results for the standard cosmological models can be derived from simple physical arguments. This analysis is an enhancement of the approach described in Theoretical Concepts in Physics (Longair 1992). The homogeneous isotropic models can be derived without appeal to sophisticated mathematical procedures and the essence of the more complete derivations will become apparent as we proceed. Uniformly-expanding, isotropic, homogeneous world models are the natural point of departure for the construction of the standard world models. The observational bases for this assertion are the isotropy and homogeneity of the Universe on a very large scale and the velocity-distance relation for galaxies discovered by Hubble. My presentation will complement the approach taken by Dr. Sandage.
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(1995). The Robertson-Walker Metric. In: The Deep Universe. Saas-Fee Advanced Courses, vol 23. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-31635-3_21
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DOI: https://doi.org/10.1007/3-540-31635-3_21
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