... On the basis of two observations, 1) the Universe is currently in a state of uniform expansion and 2) the Universe is filled with photons that come from background radiation at a temperature of 2.74 K, we can construct our generic cosmological model known ...
... What 2 fundamental observations of the Universe directly tell us the manner in which the Universe is evolving? ... Universe when it is 1000 years old because a) there was no matter \b there were not photons \c the universe was opaque to ...
... In the last lecture, we considered a rather unusual application of pressure when we considered the early universe. ... The early universe was characterized by a very large ratio of radiation to matter. The. ...
... A corollary to Newton's ideas was the so called Clockwork Universe model. ... concept that states that the total momentum of the Universe is conserved, interactions redistribute the momentum, but the total ...
... the Roberston-Walker Metric and General Relativity which describes the Universe via the rate of change of the scale factor (R(t ... Its second derivative is the deceleration rate of the Universe which depends on the total mass density, pho . ...
... Virialized structures in the Universe produce velocity perturbations of galaxies which are located near them. ... delta v)/v depends on the background density of the Universe (OMEGA) and the density contrast ( delta rho/rho ) interior to the ...
... The Universe can act arbitrarily. Physics: Nature is understandable. Man is part of nature, not removed from it. ... Man lives in a rational Universe governed by cause and effect. Historical Cosmological Models show a steady. ...
... Apr 10: Curvature and Causality . Apr 12: The Expanding Universe . Apr 15: The Microwave Background . ... Apr 15: The Microwave Background . Apr 17: The Evolution of the Universe in the First Hundreth Second .. ...