Physics – General Physics
Scientific paper
2010-07-04
Revista Brasileira de Ensino de Fisica, v. 33, n. 4, 4702 (2011) - Portuguese version
Physics
General Physics
4 pages, 5 figures, Portuguese version at http://www.sbfisica.org.br/rbef/pdf/334702.pdf
Scientific paper
Graphical representations of classical Friedmann's models are often
misleading when one considers the age of the universe. Most textbooks disregard
conceptual differences in the representations, as far as ages are concerned. We
discuss the details of the scale-factor versus time function for Friedmann's
solutions in the time range that includes the ages of model universes.
Soares Domingos
Viglioni Arthur
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