With his groundbreaking and controversial DIM hypothesis, Dr. Leonard Peikoff casts a penetrating new light on the process of human thought, and thereby on Western culture and history. In this far-reaching study, Peikoff identifies the three methods people use to integrate concrete data into a whole, as when connecting diverse experiments by a scientific theory, or separate laws into a Constitution, or single events into a story. The first method, in which data is integrated through rational means, he calls Integration. The second, which employs non-rational means, he calls Misintegration. The third is Disintegration—which is nihilism, the desire to tear things apart. In The DIM Hypothesis Peikoff demonstrates the power of these three methods in shaping the West, by using the categories to examine the culturally representative fields of literature, physics, education, and politics. His analysis illustrates how the historical trends in each field have been dominated by one of these three categories, not only today but during the whole progression of Western culture from its beginning in Ancient Greece. Extrapolating from the historical pattern he identifies, Peikoff concludes by explaining why the lights of the West are going out—and predicts the most likely future for the United States.

"A pathbreaking book on an important subject which, surprisingly, has been paid little attention by social scientists. Zerubavel writes with both learning and lucidity. His book is a pleasure to read." -Peter Berger "Others have written about the structuring of time, but few so insightfully and compellingly as Zerubavel." -Neil J. Smelser "This is a jewel of a book, one of the most important contributions to cultural sociology in recent years. Professor Zerubavel's easy blend of history, religion, science, politics, and social values makes this a study a delightful voyage of unexpected discovery and new awareness. It hink the title has misled some people into thinking this is a book on music or something of the sort. All the more reason to rejoice at this reissue in paperback." -David S. Landes "Hidden Rhythms is an exciting study of a subject that has net yet gained the attention it deserves among sociologists and other social scientists . . . Zerubavel's book has the distinctive merit to discuss earlier approaches to the study of schedules and calendars and to add a series of extremely shrewd observations and calendars to add a series of extremely shrewd observations of his own on the sociology of time. His work seems indispensable for all those social scientists who have become conscious of the central position of the temporal dimension in the life of people and their society." -Lewis A. Coser "Eviatar Zerubavel's Hidden Rhythms is an original and highly imaginative analysis of the role time schedule plays in social life. Continuing the distinctive focus on social time Zerubavel develops in Patterns of Time in Hospital life, he provides in Hidden Rhythms more penetrating and profound analysis of the subtle and diverse significance of time in organizing our social relationships and lives. A joy to read." -Peter M. Blau

In a unique effort, this book brings together, for the first time, scholarly analyses by eminent researchers of the historical, social, legal, and cultural influences on the young newcomers' lives as well as reports by practitioners in major aid organizations about the concrete work that their organizations have been carrying out.

THE old saying that small causes give rise to great effects has been confirmed more than once in the history of physics. For, very frequently, inconspicuous differences be- tween theory and experiment (which did not, however, escape the vigilant eye of the investigator) have become starting- points of new and important researches. Out of the well-known Michelson-Morley experiment, which, in spite of the application of the most powerful methods of exact optical measurement, failed to show an influence of the earth's movement on the propagation of light as was predicted by classical theory, there arose the great structure of Einstein's Theory of Eelativity. In the same way the trifling difference between the measured and calculated values of black-body radiation gave rise to the Quantum Theory which, formulated by Max Planck, was destined to revolutionise in the course of time almost all departments of physics. The quantum theory is yet comparatively young. It is therefore not surprising that we are confronted with an unfinished theory still in process of development which, changing constantly in many directions, must often destroy what it has built up a short time before. But under such circumstances as these, in which the theory is continually deriving new nourishment from a fresh stream of ideas and suggestions, there is a peculiar fascination in attempting to review the life-history of the quantum theory to the present time and in disclosing the kernel which will certainly out- last changes of form, 1 CHAPTER I The Origin of the Quantum Hypothesis § I. Black-Body Radiation and its Realisation in Practice THE Quantum Theory &st saw light in 1900. When, in the years immediately preceding (1897-1899), Lummer and Pringsheim made their fundamental measurements ' of black-body radiation at the Beichsanstalt, they could ba.ve had no premonition that their careful experiments would become the starting-point of a revolution such as has seldom occurred in physics. In the field of heat radiation chief interest at that time was centred in the radiation of a black body (briefly called " black- body " radiation), that is, of a body which absorbs completely all radiation which falls on it and which thus reflects, trans- mits, and scatters 2 none. We may shortly call to mind the following facts. It is known that any body at a given temperature sends out energy in the form of radiation into the surrounding space. This radiation is not energy in a single simple form but is made up of a number of single radiations of different colours, i.e. of different wave-lengths X or of different frequencies s v. In other words, it forms in general a spectrum in which radiations of all frequencies between v = and v = oo are represented. Further, these radiations are present in varying " intensities." We define this term thus. Consider the radiation emitted from unit surface of the body per second in a certain direction ; break it up spectrally and cut out of the spectrum a small frequency interval dv such that it contains all frequencies between v and V + dv. The energy of radiation E^ thus sliced out (namely, the emissivity of the body for the frequency v)