|Principles, philosophy of science: physical principles are not the same as laws of nature. Rather, laws can be gained from principles or traced back to principles. Examples are the principle of the shortest time, the principle of the smallest effect, the uncertainty principle. See also theories, laws of nature, laws, natural constants.|
Books on Amazon
|Alan Guth Die Geburt des Kosmos aus dem Nichts, München 1997 (German)
Def Cosmological Principle: thesis that the universe is homogeneous (the same mass density everywhere ) and is isotropic (it looks the same from all directions).
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