Jimena Canales's A Tenth of a Second: A History PDF

By Jimena Canales

ISBN-10: 0226093182

ISBN-13: 9780226093185

In the overdue 15th century, clocks obtained minute palms. A century later, moment palms seemed. however it wasn’t till the 1850s that tools may perhaps realize a 10th of a moment, and, when they did, the impression on sleek technological know-how and society was once profound. Revealing the historical past at the back of this infinitesimal period, A 10th of a Second sheds new mild on modernity and illuminates the paintings of significant thinkers of the final centuries.

Tracing debates in regards to the nature of time, causality, and loose will, in addition to the creation of contemporary technologies—telegraphy, images, cinematography—Jimena Canales locates the reverberations of this “perceptual second” all through tradition. as soon as scientists linked the 10th of a moment with the rate of idea, they constructed response time experiments with lasting implications for experimental psychology, body structure, and optics. Astronomers and physicists struggled to manage the profound outcomes of effects that have been a 10th of a moment off. And references to the period have been a part of a basic inquiry into time, attention, and sensory adventure that concerned rethinking the contributions of Descartes and Kant.

Considering its influence on for much longer time classes and that includes appearances through Henri Bergson, Walter Benjamin, and Albert Einstein, between others, A 10th of a Second is eventually an enormous contribution to historical past and a unique viewpoint on modernity.

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Extra resources for A Tenth of a Second: A History

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57 He contended with fatigue, increased the number of observations, measured the personal equation of different observers, and had them exchange places from one side of the ruler to the other. ” Even the simplest measuring tasks required 56. , 96. 57. , 92. Baily contrasted these dots to the “fine” and “scarcely perceptible” lines of the French meter. 58. Ibid. ”61 Anything that touched a ruler would alter its pristine length. Focus now switched to the ruler’s bedding and to things affecting the bedding—not only temperature but also the floors and walls of the laboratory.

Brooks III, “Philosophy and Psychology at the Sorbonne, 1885–1913,” Journal of the History of the Behavioral Sciences 29 (April 1993). For an account of the continuing failure of experimental psychology in France after the death of Théodule Ribot, see Serge Nicolas and Ludovic Ferrand, “Pierre Janet au Collège de France,” Psychologie et histoire 1 (2000). reaction time and the per sonal equation 29 on changing the place in the body to which the stimulus was applied. The speed of nervous transmission was subtracted from the total reaction time to reveal the sought after speed of thought.

50 The famous physicist Henri Victor Regnault (whom Helmholtz described as the best French scientist) explained how determining these errors was urgent. ” Yes, it was important to determine the time of transmission in the wires of the equipment and the inertia 49. Hervé Faye, “Sur les observations du soleil,” Comptes rendus des séances de l’Académie des sciences 28 (1849): 243. 50. ” For Faye a “lost time” arose when different impressions were compared to each other. ” This mental work was fatiguing: “The fact remains that the need to compare two sensations coming from different origins forces the spirit [esprit] to a very peculiar task, as it spends such a considerable amount of time establishing communication between different nerve cells.

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A Tenth of a Second: A History by Jimena Canales

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