
Mont Saint Michel and Chartres (1904)
J. Mordaunt Crook, " Burges, William (1827–1881) http://www.oxforddnb.com/templates/article.jsp?articleid=3972&back=&version=2004-09", Oxford Dictionary of National Biography, Oxford University Press, 2004
Mont Saint Michel and Chartres (1904)
Mont Saint Michel and Chartres (1904)
Robert Grosseteste and the Origins of Experimental Science 1100-1700 (1953)
On Politics: A History of Political Thought: From Herodotus to the Present (2012), Ch. 4 : Roman Insights: Polybius and Cicero
“The models of Einstein and de Sitter are static solutions”
The Structure of the Universe: An Introduction to Cosmology (1949)
Context: The models of Einstein and de Sitter are static solutions of Einstein's modified gravitational equations for a world-wide homogeneous system. They both involve a positive cosmological constant λ, determining the curvature of space. If this constant is zero, we obtain a third model in classical infinite Euclidean space. This model is empty, the space-time being that of Special Relativity.
It has been shown that these are the only possible static world models based on Einstein's theory. In 1922, Friedmann... broke new ground by investigating non-static solutions to Einstein's field equations, in which the radius of curvature of space varies with time. This Possibility had already been envisaged, in a general sense, by Clifford in the eighties.<!--p.82