Action At A Distance
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Action at a Distance
Author: John Durham Peters
language: en
Publisher: U of Minnesota Press
Release Date: 2020-06-23
How are human actions shaped by the materiality of media? Contemporary media leads us more than ever to an ‘acting at a distance,’ an acting entangled with the materiality of communication and the mediality of transmission. This book explores this crucial phenomenon thereby introducing urgent questions of human interaction, the binding and breaking of time and space, and the entanglement of the material and the immaterial. Three vivid inquiries deal with histories and theories of mediality and materiality: John Durham Peters looks at episodes of simultaneity and synchronization. Christina Vagt discusses the agency of computer models against the backdrop of aesthetic theories by Henri Bergson and Hans Blumenberg, and Florian Sprenger discusses early electrical transmissions through copper wire and the temporality of instantaneity.
Forces and Fields
This history of physics focuses on the question, "How do bodies act on one another across space?" The variety of answers illustrates the function of fundamental analogies or models in physics, as well as the role of so-called unobservable entities. Forces and Fields presents an in-depth look at the science of ancient Greece, and it examines the influence of antique philosophy on seventeenth-century thought. Additional topics embrace many elements of modern physics—the empirical basis of quantum mechanics, wave-particle duality and the uncertainty principle, and the action-at-a-distance theory of Wheeler and Feynman. The introductory chapter, in which the philosophical view is developed, can be omitted by readers more interested in history. Author Mary B. Hesse examines the use of analogies in primitive scientific explanation, particularly in the works of Aristotle, and contrasts them with latter-day theories such as those of gravitation and relativity. Hesse incorporates studies of the Pre-Socratics initiated by Francis Cornford and continued by contemporary classical historians. Her perspective sheds considerable light on the scientific thinking of antiquity, and it highlights the debt that the seventeenth-century natural philosophers owed to Greek ideas.
Lectures On Cosmology And Action-at-a-distance Electrodynamics
This book describes the subject of electrodynamics at classical as well as quantum level, developed as an interaction at a distance. Thus it has electric charges interacting with one another directly and not through the medium of a field. In general such an interaction travels forward and backward in time symmetrically, thus apparently violating the principle of causality. It turns out, however, that in such a description the cosmological boundary conditions become very important. The theory therefore works only in a cosmology with the right boundary conditions; but when it does work it is free from the divergences that plague a quantum field theory.