<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0011-1503</journal-id>
<journal-title><![CDATA[Crítica (México, D.F.)]]></journal-title>
<abbrev-journal-title><![CDATA[Crítica (Méx., D.F.)]]></abbrev-journal-title>
<issn>0011-1503</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Investigaciones Filosóficas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0011-15032009000300003</article-id>
<article-id pub-id-type="doi">10.22201/iifs.18704905e.2009.912</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[El éter relativista: un cambio conceptual inconcluso]]></article-title>
<article-title xml:lang="en"><![CDATA[Relativistic Ether: Unfinished Conceptual Change]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cassini]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Levinas]]></surname>
<given-names><![CDATA[Marcelo Leonardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Buenos Aires  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Buenos Aires  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2009</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2009</year>
</pub-date>
<volume>41</volume>
<numero>123</numero>
<fpage>3</fpage>
<lpage>38</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0011-15032009000300003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0011-15032009000300003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0011-15032009000300003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La posición inicial de Einstein con respecto al éter electromagnético y su posterior eliminación del escenario de la relatividad especial resultaron profundamente alteradas por la relatividad general. En este artículo analizamos los diferentes argumentos de Einstein contra el éter electromagnético. Luego estudiamos las razones que lo llevaron a reintroducir el éter gravitatorio en la relatividad general. Después de comparar las propiedades y funciones del antiguo éter con las del nuevo éter relativista, concluimos que se ha producido un cambio conceptual y que el término &#8220;éter&#8221; ha experimentado un cambio de significado. No obstante, mostramos que el nuevo éter retuvo algunas de las propiedades y funciones características del viejo éter electromagnético.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary Einstein&#8217;s initial attitude towards electromagnetic ether in special relativity was deeply disrupted by general relativity. In this paper we analyze Einstein&#8217;s different arguments against electromagnetic ether in the frame of special relativity. We then study his reasons for postulating a gravitatory ether in general relativity. After comparing the properties and functions of the traditional electromagnetic ether with those of the new relativistic ether, we conclude that a conceptual change has occurred, because the term &#8220;ether&#8221; has undergone a change of meaning. However, we also show that the new ether still retains many properties and functions characteristic of the old electromagnetic ether.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[relatividad especial]]></kwd>
<kwd lng="es"><![CDATA[éter gravitatorio]]></kwd>
<kwd lng="es"><![CDATA[espacio-tiempo]]></kwd>
<kwd lng="es"><![CDATA[relatividad general]]></kwd>
<kwd lng="es"><![CDATA[cambio de significado]]></kwd>
<kwd lng="en"><![CDATA[special relativity]]></kwd>
<kwd lng="en"><![CDATA[gravitatory ether]]></kwd>
<kwd lng="en"><![CDATA[space-time]]></kwd>
<kwd lng="en"><![CDATA[general relativity]]></kwd>
<kwd lng="en"><![CDATA[change of meaning]]></kwd>
</kwd-group>
</article-meta>
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