Wednesday 6 January 2010 Amphithéâtre Maurice Halbwachs, Site Marcelin Berthelot Open to all, subject to availability 17:00 - 18:00 Download audio Sound, meter and number, from Pythagoras to Nicole Oresme. Speaker(s) Daniel Heller Roazen Professor at Princeton University (U.S.A.) Events Previous Guest lecturer 6 Jan 2010 17:00 to 18:00 Daniel Heller Roazen In the forge. The invention of consonance Guest lecturer 13 Jan 2010 17:00 to 18:00 Daniel Heller Roazen From arithmetic to rhythmic art Guest lecturer 20 Jan 2010 17:00 to 18:00 Daniel Heller Roazen " Natural music " and vulgar languages Guest lecturer 27 Jan 2010 17:00 to 18:00 Daniel Heller Roazen Shards of the cosmos Next See also Michel Zink, chair Literatures of medieval France World harmonies and disharmonies