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Abstract:

At the end of the nineteenth century light was regarded as an electromagnetic wave propagating in a material medium called ether. The speed c appearing in Maxwell's wave equations was the speed of light with respect to the ether. Therefore, according to the Galilean addition of velocities, the speed of light in the laboratory would differ from c. The measure of such a difference would reveal the motion of the laboratory (the Earth) relative to the ether (a sort of absolute motion). However, the Earth's absolute motion was never evidenced. Galilean addition of velocities is based on the assumption that lengths and time intervals are invariant (independent of the state of motion). This way of thinking about the spacetime emanates from our daily experience and lies at the heart of Newton's classical mechanics. Nevertheless, in 1905 Einstein defied Galilean addition of velocities by postulating that light travels at the same speed c in any inertial frame. In doing so, Einstein extended the principle of relativity to the electromagnetic phenomena described by Maxwell’s laws. In Einstein’s special relativity ether does not exist and absolute motion is devoid of meaning. The invariance of the speed of light forced the replacement of Galilean transformations with Lorentz transformations. Thus, relativistic length contractions and time dilations entered into our understanding of spacetime. Newtonian mechanics had to be reformulated, which led to the discovery of the mass-energy equivalence. © Springer-Verlag Berlin Heidelberg 2014.

Registro:

Documento: Parte de libro
Título:From æther theory to special relativity
Autor:Ferraro, R.; Ferraro, R.
Filiación:Instituto de Astronomía y Física del Espacio, Casilla de Correo 67, Sucursal 28, Buenos Aires, 1428, Argentina
Facultad de Ciencias Exactas y Naturales, Departamento de Física, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón I, Buenos Aires, 1428, Argentina
Año:2014
Página de inicio:3
Página de fin:25
DOI: http://dx.doi.org/10.1007/978-3-642-41992-8_1
Título revista:Springer Handbook of Spacetime
Título revista abreviado:Springer Handb. of Spacetime
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97836424_v_n_p3_Ferraro

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Citas:

---------- APA ----------
Ferraro, R. & Ferraro, R. (2014) . From æther theory to special relativity. Springer Handbook of Spacetime, 3-25.
http://dx.doi.org/10.1007/978-3-642-41992-8_1
---------- CHICAGO ----------
Ferraro, R., Ferraro, R. "From æther theory to special relativity" . Springer Handbook of Spacetime (2014) : 3-25.
http://dx.doi.org/10.1007/978-3-642-41992-8_1
---------- MLA ----------
Ferraro, R., Ferraro, R. "From æther theory to special relativity" . Springer Handbook of Spacetime, 2014, pp. 3-25.
http://dx.doi.org/10.1007/978-3-642-41992-8_1
---------- VANCOUVER ----------
Ferraro, R., Ferraro, R. From æther theory to special relativity. Springer Handb. of Spacetime. 2014:3-25.
http://dx.doi.org/10.1007/978-3-642-41992-8_1