INVESTIGADORES
FERRARO Rafael
artículos
Título:
Arago (1810): the first experimental result against the ether
Autor/es:
RAFAEL FERRARO; DANIEL M. SFORZA
Revista:
EUROPEAN JOURNAL OF PHYSICS
Editorial:
IOP Publishing Ltd.
Referencias:
Lugar: Bristol, England; Año: 2005 vol. 26 p. 195 - 204
ISSN:
0143-0807
Resumen:
Ninety five years before special relativity was born, Arago attempted to detect the absolute motion of the Earth by measuring the deflection of starlight passing through a prism fixed to the Earth. The null result of this experiment gave rise to Fresnels hypothesis of an ether partly dragged by a moving substance. In the context of Einsteins relativity, the sole frame which is privileged in Aragos experiment is the proper frame of the prism, and the null result only says that Snells law is valid in that frame. We revisit the history of this premature first evidence against the ether theory and calculate Fresnels dragging coefficient by applying Huygens construction in the frame of the prism. We expose the dissimilar treatment received by the ray and the wavefront as an unavoidable consequence of the classical notions of space and time.