This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Three ways energy y is transported a) Radiation- heat hits you directly b) Conduction- heat transfers or flows along the object being heated c) Convection- circulation of air Opacity a) Level at which matter absorbs radiation b) Sun opacity depends on interior electron scattering c) Opacity in a region determines rate at which energy flows i) If opacity is too large, we get convection Sun convection a) Core radiates the rest of the layers of the sun b) Main transport mechanisms are radiation and convection Mass-Luminosity relationship- by Sir Arthur Eddington a) As mass increases gravity increases and so pressure must increase as well b) Charles law then says that temperature increases which S-B says that luminosity must increase then Why is a star hot? a) Stars radiate because theyre hot b) Why? They have an energy source...
View Full Document
This note was uploaded on 05/03/2011 for the course AST 301 taught by Professor Harvey during the Fall '07 term at University of Texas at Austin.
- Fall '07