<?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>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2006000100010</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Uniformly accelerated observers in special relativity]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres del Castillo]]></surname>
<given-names><![CDATA[G.F.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Sánchez]]></surname>
<given-names><![CDATA[C.I.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Autónoma de Puebla Instituto de Ciencias Departamento de Física Matemática]]></institution>
<addr-line><![CDATA[Puebla Pue]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Autónoma de Puebla Facultad de Ciencias Físico Matemáticas ]]></institution>
<addr-line><![CDATA[Puebla Pue]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2006</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2006</year>
</pub-date>
<volume>52</volume>
<numero>1</numero>
<fpage>70</fpage>
<lpage>73</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2006000100010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2006000100010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2006000100010&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[The red shift for an electromagnetic wave measured by two observers in a uniformly accelerated frame, which, according to the equivalence principle, should correspond to a gravitational red shift, is calculated as well as the bending of light rays.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Se calcula el corrimiento al rojo para una onda electromagnetica medido por dos observadores en un sistema de referencia uniformemente acelerado, el cual, de acuerdo con el principio de equivalencia, debe corresponder a un corrimiento al rojo gravitacional, así como la desviacion de rayos de luz.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Special relativity]]></kwd>
<kwd lng="en"><![CDATA[red shift]]></kwd>
<kwd lng="en"><![CDATA[bending of light rays]]></kwd>
<kwd lng="es"><![CDATA[Relatividad especial]]></kwd>
<kwd lng="es"><![CDATA[corrimiento al rojo]]></kwd>
<kwd lng="es"><![CDATA[desviacion de rayos de luz]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Investigaci&oacute;n</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Uniformly accelerated observers in special relativity</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>G.F. Torres del Castillo*, C.I. P&eacute;rez S&aacute;nchez**</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>** Departamento de F&iacute;sica Matem&aacute;tica, Instituto de Ciencias, Universidad Aut&oacute;noma de Puebla, </i><i>72570 Puebla, Pue., M&eacute;xico</i></font></p>     <p align="justify"><font face="verdana" size="2"><i>** Facultad de Ciencias F&iacute;sico Matem&aacute;ticas, Universidad Aut&oacute;noma de Puebla, Apartado postal 1152, 72001 Puebla, Pue., M&eacute;xico</i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Recibido el 25 de octubre de 2005    ]]></body>
<body><![CDATA[<br> Aceptado el 9 de enero de 2006</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>     <p align="justify"><font face="verdana" size="2">The red shift for an electromagnetic wave measured by two observers in a uniformly accelerated frame, which, according to the equivalence principle, should correspond to a gravitational red shift, is calculated as well as the bending of light rays.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords: </b>Special relativity; red shift; bending of light rays.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">Se calcula el corrimiento al rojo para una onda electromagnetica medido por dos observadores en un sistema de referencia uniformemente acelerado, el cual, de acuerdo con el principio de equivalencia, debe corresponder a un corrimiento al rojo gravitacional, as&iacute; como la desviacion de rayos de luz.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Descriptores: </b>Relatividad especial; corrimiento al rojo; desviacion de rayos de luz.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">PACS: 03.30.+p; 04.20.&#150;q</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmf/v52n1/v52n1a10.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Acknowledgments</b></font></p>     <p align="justify"><font face="verdana" size="2">The authors wish to thank Dr. G. Silva Ortigoza and the referee for valuable suggestions. One of the authors (C.I.P.S.) thanks the Vicerrector&iacute;a de Investigacion y Estudios de Posgrado of the Universidad Autonoma de Puebla for financial support through the programme "La ciencia en tus manos".</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. W. Rindler, <i>Essential Relativity </i>(Springer&#150;Verlag, New York, 1977).</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8315870&pid=S0035-001X200600010001000001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">2. 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