This lecture explains the concept of dimensions and show that current theoretical models predict the existence of extra spatial dimensions which could be in the discovery reach of present and near-term experiments. (April 25, 2007)
Chris Barty shares some of the work that is being done at at Lawrence Livermore National Laboratory surrounding the development of a new generation of gamma-ray sources called "MEGa-rays." (June 27, 2011)
Tsumoru Shintake talks about the XFEL/SPring-8 machine and the mechanisms it uses such as a single-crystal thermionic-cathode electron gun and an in-vacuum undulatory. (March 7, 2011)