The authors of the present study, J. N. Gadel and G. A. Peters, are employed as physicist and psychologist, respectively, in the Ammunition Research Laboratory of the Picatinny Arsenal, Dover, N.J. They note that the interpretations suggested in the article are their own and do not necessarily reflect official views.
The following is the text of the Second John Franklin Carlson Lecture, delivered at Iowa State College on May 1, 1957. Prof. Bridgman, who retired from active teaching at Harvard University in 1954 after being associated with Harvard for half a century, is known for his pioneering research in high pressures and for his contributions to thermodynatnical theory and the philosophy of science. His work has brought him many honors, including the Nobel Prize in Physics in 1946.