Education For All

www.edforall.net

Text size
  • Increase font size
  • Default font size
  • Decrease font size

Lectures (Video)

Course Home

Frontiers and Controversies in Astrophysics - Lecture 23

Get the Flash Player to view video.
Lecture 23 - Other Constraints: The Cosmic Microwave Background

Reasons for the expansion of the universe are addressed at the start of this lecture, focusing especially on the acceleration of dark energy. Supernovae were the first evidence for the existence of dark energy. Two other proofs are presented. The first is the Cosmic Microwave Background, which is a form of electromagnetic radiation that is perfectly smooth and equal in all directions. It firmly supports the Big Bang theory. Projects attempting to measure it, such as COBE and WMAP, are discussed. Secondly, Large-Scale Clustering is introduced: by measuring the degree of clustering, astronomers hope to advance their understanding of dark energy and dark matter. Computer simulations of the evolution of the universe are shown.

Prof. Charles Bailyn
ASTR 160 - Frontiers and Controversies in Astrophysics, Spring 2007
(Yale University: Open Yale)
http://oyc.yale.edu
Date accessed: 2009-05-12
License: Creative Commons BY-NC-SA

Lecture Material

To view the lecture material accompanying this lecture in a new window, please click the button below. If necessary, use the vertical or horizontal scrollbar in the new window to view more of the material or you can resize the window.

To download the above lecture material use this link. (Right-click and select Save Target As or Save Link As.)

Supplementary lecture material is listed below.

1. Problem Set 9
2. Problem Set 9 Solutions



 

Translate

Chinese (Simplified) French German Italian Japanese Korean Portuguese Russian Spanish
More educational resources: