Lecture 9

 

Cosmology

 

 

 

 

  1. OlberŐs Paradox

 

 

 

 

 

 

 

  1. Hubble Law and expansion of the universe

 

 

 

 

 

 

 

 

a.       Big Bang

 

 

 

 

 

 

 

a.       Age of the Universe

 

 

 

 

 

 

b.      Cosmological redshift

 

 

 

 

 

 

 

  1. Cosmic microwave background radiation

 

 

a.       Discovery

 

 

 

 

 

b.      Spectrum

 

 

 

 

 

c.       Temperature

 

 

 

 

 

  1. Evolution of mass-energy density

 

 

a.       Radiation-dominated universe

 

 

 

 

 

b.      Matter-dominated universe

 

 

 

 

 

c.       Evolution of radiation temperature

 

 

 

 

 

 

  1. The geometry of the universe

 

a.       Closed universe

 

 

 

 

 

b.      Flat universe

 

 

 

 

 

c.       Open universe