Includes entries for maps and atlases.

This volume is a collection of the Nobel Lectures delivered by the prizewinners, together with their biographies, portraits and the presentation speeches for the period 1991 ? 1995. Each Nobel Lecture is based on the work that won the prize. These volumes of inspiring lectures by outstanding physicists should be on the bookshelf of every keen student, teacher and professor of physics as well as of those in related fields.Below is a list of the prizewinners during the period 1991 ? 1995 with a description of the works which won them their prizes.(1991) P-G de GENNES?for discovering that methods developed for studying order phenomena in simple systems can be generalized to more complex forms of matter, in particular to liquid crystals and polymers; (1992) G CHARPAK ? for his invention and development of particle detectors, in particular the multiwire proportional chamber; (1993) R A HULSE & J-H TAYLOR JR. ? for the discovery of a new type of pulsar, a discovery that has opened up new possibilities for the study of gravitation; (1994) B N BROCKHOUSE ? for the development of neutron spectroscopy; C G SHULL ? for the development of the neutron diffraction technique; (1995) M L PERL ? for the discovery of the tau lepton; F REINES ? for the detection of the neutrino.

This year, Orbis Scientiae 1976, dedicated to the Bicentennial of the United States of America, was devoted entirely to recent developments in high energy physics. These proceedings contain nearly all of the papers presented at Orbis, held at the Center for Theoretical Studies, University of Miami, during January 19-22, 1976. The organization of Orbis this year was due mainly to the moderators of the sessions, principally Sydney Meshkov, Murray Gell-Mann, Yoichiro Nambu, Glennys Farrar, Fred Zachariasen and Behram Kursunoglu, who was also chairman of the conference. The coherence of the various sessions is due to their efforts, and special thanks are due to Sydney Meshkov who was responsible for coor dinating many of the efforts of the moderators and for including essentially all of the frontier developments in high energy physics. Because of the number of papers and their integrated length, it has been necessary to divide these proceedings into two volumes. An effort has been made to divide the material in the two volumes into fundamental questions (including the appearance of magnetic charge in particle physics) and recent high energy results and attendant ppenomenology. These volumes were prepared by Mrs. Helga Billings, Mrs. Elva Brady and Ms. Yvonne Leber, and their dedication and skill are gratefully acknowledged. Their efforts v PREFACE during Orbis were supplemented by those of Mrs. Jacquelyn Zagursky, with our appreciation. The photo graphs were taken by Ms. Shirley Busch.