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

Epidemiologic Methods II