The Professor investigates the mineral collection of the great Indian scientist CV Raman. India Playlist: http://bit.ly/India_Videos OBJECTIVITY (new channel by Brady): http://bit.ly/Objectivity More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter.com/periodicvideos From the School of Chemistry at The University of Nottingham: http://bit.ly/NottChem Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/