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→"Spooky action at a distance": First sentence of the paragraph had the word “used” written twice; a grammatical error. Tags: Mobile edit Mobile web edit |
m v2.05b - Bot T20 CW#61 - Fix errors for CW project (Reference before punctuation - Link equal to linktext) |
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Action at a distance also acts as a model explaining physical phenomena even in the presence of other models. Again in the case of gravity, hypothesizing an instantaneous force between masses allows the return time of [[comets]] to be predicted as well predicting the existence of a previously unknown planets, like [[Neptune]].<ref>{{Cite book |last=Feather |first=Norman |title=An Introduction to the Physics of Mass Length and Time - Hardcover |publisher=Edinburgh University Press |year=1959}}</ref>{{rp|210}} These triumphs of physics predated the alternative more accurate model for gravity based on general relativity by many decades.
Introductory physics textbooks discuss [[central forces]] like gravity by models based on action-at-distance without discussing the cause of such forces or issues with it until the topics of [[Theory of relativity|relativity]] and [[Field (physics)|fields]] are discussed. For example, se ''[[The Feynman Lectures on Physics
== History ==
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Thus the aether model, initially so very different from action at a distance, slowly changed to
resembled simple empty space.<ref name=Whittaker/>{{rp|393}}
In 1905, Poincaré proposed [[gravitational wave]]s, emanating from a body and propagating at the speed of light, as being required by the Lorentz transformations<ref>{{Cite journal |last=Poincaré |first=Henri |date=1905 |title=Sur la dynamique de l'électron |url=https://www.academie-sciences.fr/pdf/dossiers/Poincare/Poincare_pdf/Poincare_CR1905.pdf |journal=Académie des sciences, Note de H. Poincaré. C.R. T. |volume=140 |pages=1504–1508}}</ref> and suggested that, in analogy to an accelerating [[electrical charge]] producing [[electromagnetic wave]]s, accelerated masses in a relativistic field theory of gravity should produce gravitational waves.<ref name="CGShistory">
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