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Search Results: 1 - 7 of 7 matches for " Levinas "
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La reinterpretación radical del experimento de Michelson-Morley por la relatividad especial
Cassini, Alejandro;Levinas, Leonardo;
Scientiae Studia , 2005, DOI: 10.1590/S1678-31662005000400002
Abstract: we attempt to elucidate how different theoretical assumptions bring about radically different interpretations of the same experimental result. in order to do it, we analyze einstein's special relativity as it was originally formulated in 1905. we then examine its singular relation with the result of the 1887 michelson-morley experiment. we point out that in diverse historical contexts one and the same experiment can be thought of as providing different - often incompatible - conceptualizations of phenomena. this permits us to show why special relativity prevailed over its rival theories. einstein's theory made possible a new reinterpretation of michelson-morley experiment by relating it with a novel phenomenon, namely, the invariance of the speed of light, which was not the one originally investigated in that experiment. this fact enables us to answer the question about how this experiment could have been interpreted in a completely different historical context, such as seventeenth-century science, when earth's orbital motion was still a questionable hypothesis.
La hipótesis del cuanto de luz y la relatividad especial ?Por qué Einstein no las relacionó en 1905?
Cassini, Alejandro;Levinas, Marcelo Leonardo;
Scientiae Studia , 2007, DOI: 10.1590/S1678-31662007000400001
Abstract: we attempt to determine why einstein did not mention his article on light-quanta hypothesis, written in march 1905, in his formulation of special relativity, devised just three months later. the main reasons we have found are the following: einstein's different attitudes towards the existence of ether and absolute space; his permanent commitment to the ontological primacy of the electromagnetic field; the non-classical properties he ought to attribute to light-quanta; his hesitant stance about maxwell electrodynamics as a complete and definitive representation of physical reality and at the same time, his suspection that a possible wave/particle duality would not lead to an unsolvable difficulty; his unstable and uncompromised attitude with respect to atomism; the more conservative, though less intuitive, character of special relativity; the different interpretation of the epistemological status of both theories and the marked differences in their formulation.
El carácter histórico de la concepción cusana de verdad
Levinas,Marcelo Leonardo; Szapiro,Aníbal;
Revista latinoamericana de filosof?-a , 2011,
Abstract: we analyze the historicity of the nicholas of cusa′s conception about truth through the study of: i) the ruptures and continuities between his conception and other previous conceptions of truth, and ii) his institutional belonging and the historical moment. we link the continuities between his ecclesiological work and his philosophical work with the affinity among them and its political objectives framed in the conflicts of the church of that time. we show how the historical moment constitutes not only a contextual factor but also an explicative one of his philosophical thought.
La explicación de Einstein del efecto fotoeléctrico: un análisis histórico-epistemológico
Cassini,Alejandro; Levinas,Marcelo Leonardo;
Revista latinoamericana de filosof?-a , 2008,
Abstract: we show that einstein's explanation of photoelectric effect is a causal explanation that has clear epistemological advantages with respect to other rival explanations. we point out the heuristic fertility of this hypothesis and the problems brought about by the acceptance of the reality of light-quanta. we conclude that the reality of light-quanta has been historically affected by the general problem of the reality of quantum entities and that the former cannot be solved independently of the latter. for that reason, the causal component of einstein's explanation cannot be retained in the context of quantum theory of particle motion. in any case, the original heuristic value of einstein's hypothesis of light-quanta is not affected by the aforementioned considerations.
El carácter histórico de la concepción cusana de verdad
Marcelo Leonardo Levinas,Aníbal Szapiro
Revista Latinoamericana de Filosofía , 2011,
Abstract: Analizamos la historicidad de la concepción de verdad de Nicolás de Cusa mediante el estudio de: i) las rupturas y continuidades existentes entre su concepción y otras concepciones de verdad anteriores, y ii) la pertenencia institucional y el momento histórico del Cusano. Vinculamos las continuidades entre su obra eclesiológica y su obra filosófica con la afinidad existente entre ellas y sus objetivos políticos en el marco de su actuación en los conflictos de la Iglesia. Establecemos cómo el momento histórico constituye un factor no sólo contextual sino también explicativo de su pensamiento filosófico. We analyze the historicity of the Nicholas of Cusa′s conception about truth through the study of: i) the ruptures and continuities between his conception and other previous conceptions of truth, and ii) his institutional belonging and the historical moment. We link the continuities between his ecclesiological work and his philosophical work with the affinity among them and its political objectives framed in the conflicts of the Church of that time. We show how the historical moment constitutes not only a contextual factor but also an explicative one of his philosophical thought.
La explicación de Einstein del efecto fotoeléctrico: un análisis histórico-epistemológico
Alejandro Cassini,Marcelo Leonardo Levinas
Revista Latinoamericana de Filosofía , 2008,
Abstract: Mostramos que la explicación de Einstein del efecto fotoeléctrico es una explicación causal que posee claras ventajas epistemológicas sobre otras explicaciones rivales. Se alamos la fertilidad heurística de esta hipótesis y los problemas que suscitó la aceptación de la realidad de los cuantos de luz. Concluimos que la realidad de los cuantos de luz ha resultado históricamente afectada por el problema general de la realidad de las entidades cuánticas y no ha podido resolverse independientemente de él. Por ello el componente causal de la explicación de Einstein no ha logrado mantenerse en el contexto de una teoría cuántica referida al movimiento de partículas. No obstante, el valor heurístico original de la hipótesis del cuanto de luz de Einstein ha mantenido su vigencia. We show that Einstein's explanation of photoelectric effect is a causal explanation that has clear epistemological advantages with respect to other rival explanations. We point out the heuristic fertility of this hypothesis and the problems brought about by the acceptance of the reality of light-quanta. We conclude that the reality of light-quanta has been historically affected by the general problem of the reality of quantum entities and that the former cannot be solved independently of the latter. For that reason, the causal component of Einstein's explanation cannot be retained in the context of quantum theory of particle motion. In any case, the original heuristic value of Einstein's hypothesis of light-quanta is not affected by the aforementioned considerations.
Macroscopical matter derived from Quantum Field Theory
G. Domenech,M. L. Levinas
Physics , 2000, DOI: 10.1016/S0378-4371(99)00549-X
Abstract: We develop the WKB expansion to relate Quantum Field Theory variables with those describing macroscopical matter. We find that, up to the first quantum correction, free scalar fields correspond to perfect fluids with pressure. We also find the law of motion for the associated particles which takes into account deviations from the classical trajectories, showing that they do not follow unaccelerated straight line trajectories. Keywords: Quantum Field Theory, Fluid dynamics. PACS number (s): 11.10.-z, 03.40.Gc
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