UC Berkeley's 1923 Memorial Stadium sits on top of an active earthquake fault. In case of a major quake, the Hayward fault could tear the ground apart below the stadium. A huge retrofit project is well underway, and the seismic solutions that are being implemented have never been tried before. The stadium is being rebuilt so that parts of it will actually be mobile, moving with the shifting earth when the rupture occurs. Full Story: http://newscenter.berkeley.edu/2011/09/01/memorial-stadium-renovated-with-help-of-berkeleys-own/

Physics 111 Advanced Laboratory. Professor Sumner Davis This video accompanies the Atomic Physics Experiment, providing students with an introduction to the theory, apparatus, and procedures for the Zeeman effect part of the lab exercise. In 1896 Peter Zeeman observed the broadening and polarization of spectral lines of sodium when the source was placed in a magnetic field. Since that time both the changes in the energy levels of an individual atom and the splitting of spectral lines in a magnetic field have carried the name Zeeman Effect. After observing the principal spectral lines in hydrogen, you will go on to measure the Zeeman effect in a single spectral line of helium. A high voltage discharge tube filled with helium is placed between the poles of an electromagnet. Light from the lamp is analyzed with a Fabry-Perot interferometer. From your data you will calculate the magnitude of the Bohr magneton. http://advancedlab.org