Albert Einstein presentaba en 1916 Sobre la teoría de la relatividad especial y general con las siguientes palabras: «El presente librito pretende dar una idea lo más exacta posible de la teoría de la relatividad, pensando en aquellas personas que, sin dominar el aparato matemático de la física teórica, tienen interés en la teoría desde el punto de vista científi co o fi losófi co». He aquí pues los fundamentos de la teoría de la relatividad expuestos con la mayor claridad posible por su propio autor.

Obra publicada pocos años antes de que ALBERT EINSTEIN (1879-1955) estableciera definitivamente las famosas ecuaciones de campo de la relatividad general, SOBRE LA TEORÍA DE LA RELATIVIDAD ESPECIAL Y GENERAL se propone «dar una idea lo más exacta posible de la teoría de la relatividad, pensando en aquellos que, sin dominar el apartado matemático de la física teórica, tengan interés por la teoría desde el punto de vista científico o filosófico general». La presente edición, cuya traducción ha sido revisada exhaustivamente e incorpora un índice analítico, incluye, como apéndice, una derivación sencilla de la transformación de Lorentz y una exposición de la formulación cuadridimensional de Minkowski.

From 1900 to 1924 Spain experienced a stage of vigorous academic freedom and unfettered scientific inquiry that strikingly contrasted with the repressive atmosphere of the periods before and after. Thomas Glick explores this "recovery of science" by focusing on the national discussion provoked by Einstein's trip to Spain in 1923. His visit stimulated a debate on the nature and social value of science that was remarkable in a society so recently awakened to the scientific role in the process of modernization. Einstein's universal appeal created the unlikely occasion for a fascination with science that cut across social classes and previously established domains of discourse. The political Right, which in other countries opposed relativity in the name of "traditional" Newtonian science, backed the new theories with surprising enthusiasm. Engineers, a politically conservative group, contributed much of the rank-and-file support for Einstein; physicians, who tended to the Left, also eagerly embraced his ideas, as did a host of mutually antagonistic political groups, including anarcho-syndicalists and bourgeois Catalan nationalists. Professor Glick's analysis of this multidimensional scientific forum provides an unusual amount of information on science in Spain and an opportunity to contrast the Spaniards' reception of Einstein's work and that of other nations during this historical period. Originally published in 1988. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

Originally published in the Soviet Union for use in schools in India, this introduction to the theory of relativity covers all the fundamentals is a meaningful and understandable way.

La comprensión lectora en la enseñanza del español LE/L2: de la teoría a la práctica presents state-of-the-art theory and teaching practices for integrating reading skills into the teaching of Spanish. The book bridges a conspicuous gap between research supporting reading as a key component of language acquisition and actual practice by discussing how to implement reading successfully in and out of the classroom. Written entirely in Spanish, the book focuses on the needs of Spanish language learners with the goal of motivating students to read in the target language and work with diverse types of texts and genres. Written in a clear and accessible manner, La comprensión lectora en la enseñanza del español LE/L2: de la teoría a la práctica is an essential resource for teachers of Spanish at all levels. It is an excellent reference book for language teachers who wish to integrate reading into the teaching of the Spanish language.

The present volume grew out of a double session of the Boston Collo quium for the Philosophy of Science held in Boston on March 25, 1983. The papers presented there (by Biezunski, Glick, Goldberg, and Judith Goodstein!) offered both sufficient comparability to establish regulari ties in the reception of relativity and Einstein's impact in France, Spain, the United States and Italy, and sufficient contrast to suggest the salience of national inflections in the process. The interaction among the participants and the added perspectives offered by members of the audience suggested the interest of commissioning articles for a more inclusive volume which would cover as many national cases as we could muster. Only general guidelines were given to the authors: to treat the special or general theories, or both, hopefully in a multidisciplinary setting, to examine the popular reception of relativity, or Einstein's personal impact, or to survey all these topics. In a previous volume, on the 2 comparative reception of Darwinism, one of us devised a detailed set of guidelines which in general were not followed. In our opinion, the studies in this collection offer greater comparability, no doubt because relativity by its nature and its complexity offers a sharper, more easily bounded target. As in the Darwinism volume, this book concludes with an essay intended to draw together in comparative perspective some of many themes addressed by the participants.