Professor Mendel Sachs's contributions have been wide-ranging and the lectures presented at the symposium honoring him on his retirement encompassed a broad spectrum — hence the title Fragments of Science. The topics covered include solar physics, quantum mechanics, crystallography, elementary particles, logic and philosophy, and the history of physics. Included also is a new poem by noted poet Robert Creeley, composed especially for the symposium.Harvey Breverman, an eminent artist and professor of art, attended the symposium and sketched the lecturers and recorded some of the material they presented (as seen from the eyes of an artist!). These remarkable drawings are reproduced in duotone throughout the volume. Post-banquet reminiscences of turbulent times at the university in the late 1960s by noted author and computer guru Cliff Stoll enliven the volume. T Y Wu and Sachs exchange greetings and comments regarding their discussions of the twin paradox in the 1970s. Sachs closes the volume with an illuminating autobiographical chapter.This is a highly stimulating volume and a feast for the eyes.

This book describes a paradigm change in modern physics from the philosophy and mathematical expression of the quantum theory to those of general relativity. The approach applies to all domains - from elementary particles to cosmology. The change is from the positivistic views in which atomism, nondeterminism and measurement are fundamental, to a holistic view in realism, wherein matter - electrons, galaxies, - are correlated modes of a single continuum, the universe. A field that unifies electromagnetism, gravity and inertia is demonstrated explicitly, with new predictions, in terms of quaternion and spinor field equations in a curved spacetime. Quantum mechanics emerges as a linear, flatspace approximation for the equations of inertia in general relativity.

This book presents a new approach to the subject of cosmology. It fully exploits Einstein's theory of general relativity. It is found that the most general formal expression of the theory replaces the (10-component) tensor formalism with a (16-component) quaternion formalism. This leads to a unified field theory, where one field incorporates gravitation and electromagnetism. The theory predicts an oscillating universe cosmology with a spiral configuration. Dark matter is explained in terms of a sea of particle-antiparticle pairs, each in a particular (derived) ground state. This leads to an explanation for the separation between matter and antimatter in the universe. There is a brief discussion of black holes and pulsars. The final chapter delves into philosophical considerations such as the different types of 'truth', positivism versus realism and a discussion of the role of the Mach principle in physics and cosmology.

This volume critically reexamines Otto Neurath’s conception of the unity of science. Some of the leading scholars of Neurath’s work, along with many prominent philosophers of science critically examine his place in the history of philosophy of science and evaluate the relevance of his work for contemporary debates concerning the unity of science.

The new edition will provide the sole comprehensive resource available for non-linear optics, including detailed descriptions of the advances over the last decade from world-renowned experts.