A generic non-conservative force, applied to an interferometer particle for a period in the past and then turned off, leaves stationary phase and fringe shifts in the now force-free interferometer. Both Aharonov-Bohm and Aharonov-Casher topological phase and fringe shifts can be created in this way. The specific sources of the non-conservative forces behind Aharonov-Bohm and Aharonov-Casher stationary fringe shifts are, respectively, Faraday induction fields and Maxwell displacement currents, now off.

Agassi has undertaken the challenge of performing a microanalysis of the works of several scientists, pointing out areas of complexity, raising questions, and criticizing current histories of science. Among the topics he has tackled are Bacon’s philosophy of science, Boyle’s ideology, the rationale of Galileo’s work, Newton’s declared methodology—influential, but misleading—, Faraday’s emancipatory enterprise; and the roots of the quantum revolution. He attempts to reconstruct what scientists did in the immediate context, rather than what they said they did, and (...) highlights difficulties and points of scepticism. Agassi considers many neglected factors that influenced science, taking in the metaphysical, social, anthropological, and even psychological spheres. (shrink)

This article explores Michael Faraday’s “Historical Sketch of Electro‐Magnetism” as a fruitful source for understanding the epistemic significance of experimentation. In this work Faraday provides a catalog of the numerous experimental and theoretical developments in the early history of electromagnetism. He also describes methods that enable experimentalists to dissociate experimental results from the theoretical commitments generating their research. An analysis of the methods articulated in this sketch is instructive for confronting epistemological worries about the theory‐dependence of experimentation. (...) †To contact the author, please write to: 10289 Saint Katherine Lane, Saint Ann, MO 63074; e‐mail: [email protected]. (shrink)

The scientific activity of Michael Faraday is examined by focusing on the procedural aspects of his activity. Procedurality is shown to be a fundamental characteristic of his work at a variety of levels: metacognitive, heuristic, schematic, and theoretical. The evolution of his ideas about the goals of science is shown to reflect fundamental roots in a procedural epistemology, closely tied to his concept of field. The implications of this analysis for the philosophy of science are briefly considered.

: Texts bear traces of complex struggles. For scientific texts, issues to do with the meaning of words and their reference are often where such struggles occur. In texts too identity is fashioned in the social realm and texts are woven closely into human cognition. The focus on how texts function to produce meaning, characteristic of recent literary theory, provides remarkable resources for locating these features in scientific texts. The project sketched here in a preliminary manner seeks to bring such (...) resources to bear on Michael Faraday's writings and explores in Faraday's rich and reflexive "textual space" his persistent concern to stabilize the meaning and reference of words as well as the less conscious subtle complexities associated with the production of meaning. Both weave closely into his scientific theorizing and fashioning of identity. (shrink)