1. Is Physics Simple? Yes and No

   • John S. Rigden
   • Roger H. Stuewer

   Editorial Pages: 1 - 3

2. Ritz, Einstein, and the Emission Hypothesis

   • Alberto A. Martínez

   Original Article Pages: 4 - 28

3. Enrico Fermi’s Discovery of Neutron-Induced Artificial Radioactivity:The Recovery of His First Laboratory Notebook

   • Giovanni Acocella
   • Francesco Guerra
   • Nadia Robotti

   Original Article Pages: 29 - 41

4. Early Gravity-Wave Detection Experiments, 1960-1975

   • James L. Levine

   Original Article Pages: 42 - 75

5. Physics in Helsinki

   • Peter Holmberg

   The Physical Tourist Pages: 76 - 113

6. Book Reviews

   • various authors

   Book Reviews Pages: 114 - 122