This collection of papers provides a broad view of the development of Lorentz and Poincaré invariance and spacetime symmetry throughout the past 100 years. The issues explored in these papers include: (1) formulations of relativity theories in which the speed of light is not a universal constant but which are consistent with the four-dimensional symmetry of the Lorentz and Poincaré groups and with experimental results, (2) analyses and discussions by Reichenbach concerning the concepts of simultaneity and physical time from a philosophical point of view, and (3) results achieved by the union of the relativity and quantum theories, marking the beginnings of quantum electrodynamics and relativistic quantum mechanics.Ten of the fundamental experiments testing special relativity are also discussed, showing that they actually support a four-dimensional spacetime based on broad Lorentz and Poincaré invariance which is more general than and includes the special theory of relativity. The generalization of the concepts of simultaneity, physical time and the nature of the speed of light within a four-dimensional spacetime framework leads to the conclusion that the symmetries embodied by the special theory of relativity can be realized using only a single postulate — the principle of relativity for physical laws.Contents:Theoretical Implications of Lorentz and Poincaré Invariance: The Dawn of Lorentz and Poincaré Invariance (1887–1905)Inquiries Regarding the Constancy of the Speed of Light (1908-1910)The Splendid Union of Special Relativity and Quantum Mechanics (1927–1949)The Isotropy of the Speed of Light c: A Convenient Assumption (1963–1995)The Logically Simplest Theory of Relativity and Its 4-Dimensional Symmetry (1990–1994)Experiments for Lorentz and Poincaré Invariance:The Fizeau ExperimentThe Wilson–Wilson ExperimentThe Observation of the Muon Lifetime DilationThe Mass–Velocity Relation ExperimentThe Thomas Precession Experimentand other papersReadership: Upper-level undergraduates, graduate students, researchers and academics in mathematical physics and theoretical physics.Key Features:There are more than 13 million hits for “J-aggregates” on Google, which is much more than that for carbon nano tube. The number of books related to the latter is more than five. In that sense there are no other books to obtain recent important information of the J-aggregates materials other than this book except volume 1 of this title