Germany:  Berlin (finish)
          Industrial research laboratories
          The Imperial Physical-Technical Institute (PTR) (1887)
          The Kaiser Wilhelm Society (1910s)

     Other sites
          Secondary European countries
          Marginal places
               The British Empire:  center and periphery
               Japan and Russia:  modernization
               United States:  the peculiar upstart

Experimenting with cathode ray tubes
     How they work (relatively simple)
     What you see (relatively complicated)

X-rays (1895)
     Experimenting around the CRT
     What are these new rays?  EM or not, what sort of EM
     X-rays as a tool:  radiography
     X-rays as a tool:  crystal structure