Page 4, The Stars II: [Previous Page] [Next Page] [Lecture Notes] [Class Home Page]

• (Most) Stars are not expanding or contracting..

  
  

  
  

• Stars are in equilibrium..

  
  

  
  

• The Downward force of Gravity is balanced by the Outward force of Pressure.

  
  

  
  

• THIS IS HYDROSTATIC EQUILIBRIUM