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#Mon Aug 09 11:51:55 CEST 2010
Slide__u5gZkKObEd-WfYQ0GneCwQ_subTitle=Arnold Sommerfeld to Niels Bohr, 21 January 1923, reproduction
Slide__u5gZkKObEd-WfYQ0GneCwQ_footer=On loan from\: Niels Bohr Archive, Copenhagen
Slide__u5gZkKObEd-WfYQ0GneCwQ_title=X-Ray Light Particles Bounce Off Electrons