Article View: sci.physics.relativity
Article #5299WHO ABANDONS EINSTEIN (APART FROM JOHN BAEZ)?
From: Pentcho Valev
Date: Mon, 31 Mar 2008 10:56
Date: Mon, 31 Mar 2008 10:56
90 lines
6716 bytes
6716 bytes
http://philsci-archive.pitt.edu/archive/00001661/ MINKOWSKI SPACE-TIME: A GLORIOUS NON-ENTITY Harvey Brown and Oliver Pooley "It is argued that Minkowski space-time cannot serve as the deep structure within a "constructive" version of the special theory of relativity, contrary to widespread opinion in the philosophical community." http://ndpr.nd.edu/review.cfm?id=6603 "Harvey Brown thinks that most philosophers are confused about relativity. Most centrally, he thinks they're confused about the relativistic effects of length contraction and time dilation.....According to (what Brown alleges is) the dominant view among substantivalists, the geometrical structure of Minkowski spacetime plays some role in explaining why moving rods shrink and why moving clocks run slow. Brown rejects this view. He asserts, instead, that in order to explain why moving rods shrink we must appeal to the dynamical laws governing the forces that hold the parts of the rod together. The geometry of Minkowski spacetime plays no role in this explanation.....He thinks that good answers to these questions say something about the way in which the forces holding the parts of the rod together depend on velocity of the rod. Only that is a story of what causes the particles to get closer together, and so what causes the rod to shrink." http://www.routledge-philosophy.com/books/Einstein-Relativity-and-Absolute-Simultaneity-isbn9780415701747 "Einstein, Relativity and Absolute Simultaneity is an anthology of original essays by an international team of leading philosophers and physicists who have come together to reassess the contemporary paradigm of the relativistic concept of time. A great deal has changed since 1905 when Einstein proposed his Special Theory of Relativity, and this book offers a fresh reassessment of Special Relativity's relativistic concept of time in terms of epistemology, metaphysics, and physics." http://philosophy.ucsd.edu/faculty/ccallender/ "On Finding 'Real' Time in Quantum Mechanics" (draft) Absolute Simultaneity. (Eds) W.L. Craig and Q. Smith. NY: OxfordUniversity Press, 2007. Craig Callender: "In my opinion, by far the best way for the tenser to respond to Putnam et al is to adopt the Lorentz 1915 interpretation of time dilation and Fitzgerald contraction.1 Lorentz attributed these effects (and hence the famous null results regarding an aether) to the Lorentz invariance of the dynamical laws governing matter and radiation, not to spacetime structure. On this view, Lorentz invariance is not a spacetime symmetry but a dynamical symmetry, and the special relativistic effects of dilation and contraction are not purely kinematical. The background spacetime is Newtonian or neo- Newtonian, not Minkowskian. Both Newtonian and neo-Newtonian spacetime include a global absolute simultaneity among their invariant structures (with Newtonian spacetime singling out one of neo-Newtonian spacetime's many preferred inertial frames as the rest frame). On this picture, there is no relativity of simultaneity and spacetime is uniquely decomposable into space and time." http://www.perimeterinstitute.ca/pdf/files/975547d7-2d00-433a-b7e3-4a09145525ca.pdf John Stachel: "It is not so well known that there was "another Einstein," who from 1916 on was skeptical about the continuum as a foundational element in physics..." Albert Einstein: "I consider it entirely possible that physics cannot be based upon the field concept, that is on continuous structures. Then nothing will remain of my whole castle in the air, including the theory of gravitation, but also nothing of the rest of contemporary physics." http://ustl1.univ-lille1.fr/culture/publication/lna/detail/lna40/pgs/4_5.pdf Jean Eisenstaedt: "Il n'y a alors aucune raison theorique a ce que la vitesse de la lumiere ne depende pas de la vitesse de sa source ainsi que de celle de l'observateur terrestre ; plus clairement encore, il n'y a pas de raison, dans le cadre de la logique des Principia de Newton, pour que la lumiere se comporte autrement - quant a sa trajectoire - qu'une particule materielle. Il n'y a pas non plus de raison pour que la lumiere ne soit pas sensible a la gravitation. Bref, pourquoi ne pas appliquer a la lumiere toute la theorie newtonienne ? C'est en fait ce que font plusieurs astronomes, opticiens, philosophes de la nature a la fin du XVIIIeme siecle. Les resultats sont etonnants... et aujourd'hui nouveaux." Translation from French: "Therefore there is no theoretical reason why the speed of light should not depend on the speed of the source and the speed of the terrestrial observer as well; even more clearly, there is no reason, in the framework of the logic of Newton's Principia, why light should behave, as far as its trajectory is concerned, differently from a material particle. Neither is there any reason why light should not be sensible to gravitation. Briefly, why don't we apply the whole Newtonian theory to light? In fact, that is what many astronomers, opticians, philosophers of nature did by the end of 18th century. The results are surprising....and new nowadays." Pentcho Valev pvalev@yahoo.com
Technical Details
Message-ID:
<1fdd62c0-2ce6-40f8-91d3-b162a0913e65@t54g2000hsg.googlegroups.com>Path:
arc1-ca.pugleaf.net!g2news1.google.com!postnews.google.com!t54g2000hsg.googlegroups.com!not-for-mailShow Full Headers
Complete Article Headers
X-Google-Thread: 10f545,623dc5fadc61b79a,start X-Google-Thread: 10b271,623dc5fadc61b79a,start X-Google-Thread: fa4c1,623dc5fadc61b79a,start X-Google-Thread: f55d3,623dc5fadc61b79a,start X-Google-Thread: 1139f8,623dc5fadc61b79a,start X-Google-Attributes: gid10f545,gid10b271,gidfa4c1,gidf55d3,gid1139f8,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news1.google.com!postnews.google.com!t54g2000hsg.googlegroups.com!not-for-mail From: Pentcho Valev <pvalev@yahoo.com> Newsgroups: sci.physics.relativity,sci.physics,fr.sci.physique,fr.sci.philo,fr.sci.maths Subject: WHO ABANDONS EINSTEIN (APART FROM JOHN BAEZ)? Date: Mon, 31 Mar 2008 03:56:42 -0700 (PDT) Organization: http://groups.google.com Lines: 90 Message-ID: <1fdd62c0-2ce6-40f8-91d3-b162a0913e65@t54g2000hsg.googlegroups.com> NNTP-Posting-Host: 85.91.141.159 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Trace: posting.google.com 1206961002 31590 127.0.0.1 (31 Mar 2008 10:56:42 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Mon, 31 Mar 2008 10:56:42 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: t54g2000hsg.googlegroups.com; posting-host=85.91.141.159; posting-account=Lz-LbgoAAABPDavKeW-eYeobwLHD_cvQ User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30),gzip(gfe),gzip(gfe)