ÿþ<html> <head> <title>BIPM: Bureau International des Poids et Mesures (www.bipm.org)</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <META NAME="keywords" content="B.I.P.M.,BIPM,Bureau International des Poids et Mesures,New SI,New S.I.,BIPM search engine,metrology search engine,BIPM metrology portal,Convention du mètre,Convention of the Metre,metrology,Metrologia,CGPM,CIPM MRA,Consultative Committees,Comités consultatifs,CCAUV,CCEM,CCPR,CCT,CCL,CCTF,CCRI,CCU,CCM,CCQM,JCRB,JCTLM,JCDCMAS,JCGM,international comparisons,calibration,prototype,standard,measurement,International System of Units,SI,length,metre,mass,kilogram,time,second,electricity,ampere,photometry,radiometry,candela,temperature,kelvin,ionizing radiation,Sèvres,Sevres,Pavillon de Breteuil"> <link href="/utils/typo.css" rel="stylesheet" type="text/css"> <style type="text/css"> .upmenu { font-family: Verdana, Arial; font-size: 11px; color: #1E1182; font-weight: normal; text-align:left; display: block; text-decoration:none} .upmenu:hover { background-color: #FFCE00 } .upmenu2 { font-family: Verdana, Arial; font-size: 11px; color: #1E1182; font-weight: normal; text-align:left; text-decoration:none} .upmenu2:hover { background-color: #FFCE00 } </style> <script language="JavaScript" type="text/JavaScript"> <!-- function MM_reloadPage(init) { //reloads the window if Nav4 resized if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) { document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }} else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload(); } MM_reloadPage(true); function inArray(e, str) { ret = false; for (j =0; j < e.length; j++) { if (e[j] == str) { ret = true; break; } } return ret; } function getRandom(max) { return Math.round(Math.random()*max); } // LISTE DES IMAGES RANDOM var sources = new Array('im_home110x110_1.jpg', 'im_01.gif', 'si_110.jpg', 'im_home110x110_2.jpg', 'im_02.gif', 'im_metrologia_110.gif', 'comites.jpg', 'im_home110x110_3.jpg', 'im_03.gif', 'big_g_100.jpg', 'image1.gif', 'im_06.gif'); var img; var images = new Array(); var sel = new Array(); var imgDisplayed = 3; for (i = 0; i < imgDisplayed; i++){ img = getRandom(sources.length-1); while (inArray(sel, img)) { img = getRandom(sources.length-1); } sel[i] = img; images[i] = '<img src="/utils/common/img2/'+sources[img]+'" width="110" height="110">'; } //--> </script> <SCRIPT language="javascript"> <!-- start JS detection if ((navigator.appName == "Netscape") || ((navigator.appName=='Microsoft Internet Explorer') && ((navigator.platform=='Mac68k') || (navigator.platform=='MacPPC')) )) { FlashMode = 0; if ((navigator.appName == "Netscape" && navigator.plugins.length > 0) || (((navigator.appName=='Microsoft Internet Explorer') && ((navigator.platform=='Mac68k') || (navigator.platform=='MacPPC')) )&& navigator.plugins.length > 0 )) { if (navigator.plugins["Shockwave Flash"]) { var plugin_version = 0; var words = navigator.plugins["Shockwave Flash"].description.split(" "); for (var i = 0; i < words.length; ++i) { if (isNaN(parseInt(words[i]))) continue; plugin_version = words[i]; } if (plugin_version >= 5) { var plugin = navigator.plugins["Shockwave Flash"]; var numTypes = plugin.length; for (j = 0; j < numTypes; j++) { mimetype = plugin[j]; if (mimetype) { if (mimetype.enabledPlugin && (mimetype.suffixes.indexOf("swf") != -1)) FlashMode = 1; // Mac wierdness if (navigator.mimeTypes["application/x-shockwave-flash"] == null) FlashMode = 0; } } } } } if (FlashMode != 1){ location.replace("noflash.html")} } // end JS detection --> </SCRIPT> <SCRIPT LANGUAGE="VBScript"> <!-- Private i, x, MM_FlashControlVersion On Error Resume Next x = null MM_FlashControlVersion = 0 var Flashmode FlashMode = False For i = 5 To 1 Step -1 Set x = CreateObject("ShockwaveFlash.ShockwaveFlash." & i) MM_FlashControlInstalled = IsObject(x) If MM_FlashControlInstalled Then MM_FlashControlVersion = CStr(i) Exit For End If Next FlashMode = (MM_FlashControlVersion >= 5) If FlashMode = True Then Else window.location="noflash.html" End If //--> </SCRIPT> </head> <body bgcolor="#F4F7F9" text="#000000" leftmargin="0" topmargin="0" marginwidth="0" marginheight="0" marginright="0"> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td height="5" colspan="2" bgcolor="#1E1182"><img src="/utils/common/img2/pix.gif" width="1" height="1" alt=""></td> </tr> <!---------------- BIPM logo and French and English menus--------------------------> <tr bgcolor="#FFFFFF"> <td bgcolor="#FFFFFF" colspan="2"> <table width="100%" border="0"> <tr> <td width="15"><img src="/utils/common/img2/pix.gif" width="15" height="15" alt=""></td> <td width="125"> <table width="100%" border="0"> <tr> <td height="94" valign="top"><img src="/utils/common/img2/logo_1.gif" width="125" height="65"alt=""><br> <img src="/utils/common/img2/baseline.gif" width="120" height="29" alt=""> </td> </tr> <tr> <td valign="top"><br/> <img src="/utils/common/img2/im_flch_rouge.gif" width="14" height="8" alt=""><a href="/fr/home/" class="txtVersion">Version fran&ccedil;aise</a><br> <img src="/utils/common/img2/im_flch_rouge.gif" width="14" height="8" alt=""><a href="/en/home/" class="txtVersion">English version</a><br/> <img src="/utils/common/img2/im_flch_rouge.gif" width="14" height="8" alt=""><a href="/en/metrologia/" class="txtVersion2">metrologia</a><br/> </td> </tr> </table> </td> <td width="15"><img src="/utils/common/img2/pix.gif" width="15" height="15" alt=""></td> <td valign="top" width="38%"> <table width="100%" border="0" cellpadding="0" cellspacing="0"> <tr height="20"> <td width="20"><img src="/utils/common/img2/flc_dirblue.gif" width="18" height="18" alt=""></td> <td colspan="2"><a href="/fr/cipm-mra/" class="upmenu" ><strong>ARRANGEMENT DU CIPM</strong><img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr> <td height="2" colspan="3" bgcolor="#FFCE00"><img src="/utils/common/img2/pix.gif" width="8" height="2" alt=""></td> </tr> <tr height="20"> <td><strong><img src="/utils/common/img2/flc_dirblue.gif" width="18" height="18" alt=""></strong></td> <td width="100%"><a href="http://kcdb.bipm.org/default_fr.asp" class="upmenu">KCDB<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> <td width="50"><a href="http://kcdb.bipm.org/default_fr.asp"><img src="/utils/common/img2/logo_kcdb_pt.gif" width="50" height="15" border="0" alt=""></a></td> </tr> <tr> <td height="2" colspan="3" bgcolor="#FFCE00"><img src="/utils/common/img2/pix.gif" width="1" height="2" alt=""></td> </tr> <tr height="20"> <td><img src="/utils/common/img2/flc_dirblue.gif" width="18" height="18" alt=""></td> <td><a href="http://www.bipm.org/jctlm/home.do?lang=fr" class="upmenu">BASE DE DONN&Eacute;ES DU JCTLM<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> <td><a href="http://www.bipm.org/jctlm/home.do?lang=fr"><img src="/utils/common/img2/logo_jctlm_pt.gif" width="50" height="15" border="0" alt=""></a></td> </tr> <tr> <td height="2" colspan="3" bgcolor="#FFCE00"><img src="/utils/common/img2/pix.gif" width="1" height="2" alt=""></td> </tr> <tr> <td height="4" colspan="3"><img src="/utils/common/img2/pix.gif" width="15" height="4" alt=""></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/fr/convention/" class="upmenu">La Convention du M&egrave;tre<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/fr/committees/" class="upmenu">Les comit&eacute;s de la Convention du M&egrave;tre<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/fr/bipm/" class="upmenu">Le si&egrave;ge du BIPM<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/fr/si/" class="upmenu">Le Syst&egrave;me international d'unit&eacute;s (SI) &#150; et le &#171; nouvel SI &#187;...<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/fr/scientific/" class="upmenu">Travaux scientifiques du BIPM<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/fr/publications/" class="upmenu">Publications du BIPM<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/fr/practical_info/" class="upmenu">Informations pratiques<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/fr/practical_info/diary/" class="txt11pts">R&eacute;unions</a> | <a href="/fr/practical_info/useful_links/" class="txt11pts">Liens utiles<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr> <td height="4" colspan="3"><img src="/utils/common/img2/pix.gif" width="15" height="4" alt=""></td> </tr> </table> </td> <td width="15"><img src="/utils/common/img2/pix.gif" width="15" height="15" alt=""></td> <td valign="top" width="42%"> <table width="100%" border="0" cellpadding="0" cellspacing="0"> <tr height="20"> <td width="20"><img src="/utils/common/img2/flc_dirblue.gif" width="18" height="18" alt=""></td> <td colspan="2"><a href="/en/cipm-mra/" class="upmenu" ><strong>CIPM MRA</strong><img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr> <td height="2" colspan="3" bgcolor="#FFCE00"><img src="/utils/common/img2/pix.gif" width="8" height="2" alt=""></td> </tr> <tr height="20"> <td><img src="/utils/common/img2/flc_dirblue.gif" width="18" height="18" alt=""></td> <td width="100%"><a href="http://kcdb.bipm.org/" class="upmenu">BIPM KEY COMPARISON DATABASE<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> <td width="50" align="right"><a href="http://kcdb.bipm.org/"><img src="/utils/common/img2/logo_kcdb_pt.gif" width="50" height="15" border="0" alt=""></a></td> </tr> <tr> <td height="2" colspan="3" bgcolor="#FFCE00"><img src="/utils/common/img2/pix.gif" width="1" height="2" alt=""></td> </tr> <tr height="20"> <td><strong><img src="/utils/common/img2/flc_dirblue.gif" width="18" height="18" alt=""></strong></td> <td><a href="http://www.bipm.org/jctlm/" class="upmenu">JCTLM DATABASE<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> <td width="50" align="right"><a href="http://www.bipm.org/jctlm/"><img src="/utils/common/img2/logo_jctlm_pt.gif" width="50" height="15" border="0" alt=""></a></td> </tr> <tr> <td height="2" colspan="3" bgcolor="#FFCE00"><img src="/utils/common/img2/pix.gif" width="1" height="2" alt=""></td> </tr> <tr> <td height="4" colspan="3" class="txt11pt"><img src="/utils/common/img2/pix.gif" width="15" height="4" alt=""></td> </tr> <tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/en/convention/" class="upmenu">The Metre Convention<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/en/committees/" class="upmenu">Committee structure of the Metre Convention<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/en/bipm/" class="upmenu">The BIPM headquarters<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/en/si/" class="upmenu">The International System of Units (SI) &#150; and the &quot;New SI&quot;...<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/en/scientific/" class="upmenu">Scientific work of the BIPM<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/en/publications/" class="upmenu">Publications of the BIPM<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/en/practical_info/" class="upmenu">Practical information<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr height="14"> <td class="navigation"><!-><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""></td> <td colspan="2"><a href="/en/practical_info/diary/" class="txt11pts">Meetings</a></a> | <a href="/en/practical_info/useful_links/" class="txt11pts">Useful links<img src="/utils/common/img/pix.gif" width="10" height="12" border="0" alt=""></a></td> </tr> <tr> <td height="4" colspan="3"><img src="/utils/common/img2/pix.gif" width="15" height="4" alt=""></td> </tr> </table> </td> <td width="10"><img src="/utils/common/img2/pix.gif" width="10" height="15" alt=""></td> </tr> </table> </td> </tr> <!-- /BIPM logo and French and English menus--------------------------> <tr> <td width="100%" bgcolor="#8493BF"><img src="/utils/common/img2/im_visuHome.jpg" width="585" height="121" alt=""></td> <td width="195" valign="bottom" bgcolor="#8493BF"><a href="/en/si/"><img src="/utils/common/img2/im_visu_si_a.gif" width="195" height="121" border="0" alt=""></a></td> </tr> <tr> <td width="100%" height="84" background="/utils/common/img2/fd_home_ut.gif"> <OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0" WIDTH="585" HEIGHT="75" id="UTC_date"> <PARAM NAME=movie VALUE="/utils/common/img2/UTC_date2.swf?LinkMachine=/SntpV2/servlet/SNTPServlet&pollingTime=20"> <PARAM NAME=menu VALUE=false> <PARAM NAME=quality VALUE=high> <PARAM NAME=bgcolor VALUE="#FFFFFF"> <EMBED src="/utils/common/img2/UTC_date2.swf?LinkMachine=/SntpV2/servlet/SNTPServlet&pollingTime=20" menu="false" quality="high" bgcolor="#FFFFFF" WIDTH="585" HEIGHT="75" NAME="UTC_date" TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/go/getflashplayer"></EMBED> </OBJECT> </td> <!-- top half of SI section -------------------> <td width="195" height="84" valign="top"><a href="/en/si/"><img src="/utils/common/img2/im_visu_si_b.gif" width="195" height="84" border="0" alt=""></a></td> <!-- /top half of SI section -------------------> </tr> <tr> <td width="100%" height="69" bgcolor="#FFFFFF"> <p><img src="/utils/common/img2/fd_band_home2.jpg" width="585" height="69" alt=""></p></td> <!-- bottom half of SI section (rowspan=2) -------------------> <td width="195" rowspan="2" valign="top" background="/utils/common/img2/fd_visu_si.gif"> <table width="195" border="0" cellspacing="0" cellpadding="15"> <tr> <td valign="top" class="navigationBlanc"> <img src="/utils/common/img2/flc_dir.gif" width="18" height="18" alt=""><a href="/en/si/" class="cadreTrt">The International System of Units (SI) &#150; and the &quot;New SI&quot;...</a><br> <br> In 1960, the 11th General Conference on Weights and Measures adopted the name <i>Syst&egrave;me International d'Unit&eacute;s</i> (International System of Units) for the recommended practical system of units of measurement. <br> <br><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""><a href="/en/si/" class="navigationBlanc">More info</a><br> <br><img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt=""><a href="/en/si/new_si/" class="navigationBlanc">Towards the "New SI"...</a><br> <br> <img src="/utils/common/img2/im_flch_jaune.gif" width="18" height="5" alt="">See also: <a href="/extra/codata/" class="navigationBlanc" title="CODATA TG on Fundamental Constants">CODATA TGFC</a><br><br><br><br> </td> </tr> </table> <p align="center" class="navigationBlanc"><img src="/utils/common/img2/pix.gif" width="15" height="1" alt="">Copyright &copy; 2004 BIPM</p><br></td> <!-- /bottom half of SI section (rowspan=2) -------------------> </tr> <tr> <td height="176" valign="top" bgcolor="#F4F7F9">&nbsp;</td> </tr> </table> <!-- fixed-position table with pictures and news---> <div id="Layer1" style="position:absolute; z-index:1; left: 15px; top: 425px; right: 215px;"> <table border="0" cellpadding="0" cellspacing="0"> <tr> <td width="110" valign="top"><script language="javascript">document.write(images[0]);</script></td> <td width="10"><img src="/utils/common/img2/pix.gif" width="10" height="15" alt=""></td> <td width="110" valign="top"><script language="javascript">document.write(images[1]);</script></td> <td width="10"><img src="/utils/common/img2/pix.gif" width="10" height="15" alt=""></td> <td width="110" valign="top"><script language="javascript">document.write(images[2]);</script></td> <td width="10"><img src="/utils/common/img2/pix.gif" width="10" height="8" alt=""></td> <td width="100%" valign="top"> <table width="100%" height="110" border="0" cellpadding="1" cellspacing="0" bgcolor="#829EBA"> <tr> <td valign="top" class="txt11pt"> <table width="100%" height="110" border="0" cellpadding="5" cellspacing="0" bordercolor="#829EBA"> <tr> <td height="1" valign="top" bgcolor="#F4F7F9" class="txt11pt"> <script language=javascript> function ActionForm(f) { f.q.style.background = "white"; } </script> <form name="search" action="http://search.bipm.org/bipm/en/C=?"> <center><table width="200" height="25"> <tr> <td class="intro">New metrology search engine: <input onClick='ActionForm(this.form)' style="vertical-align: bottom"; type="text" name="q" size="28" maxlength="50"> <!input type=hidden name="uia" value="s"> <input type=hidden name="action" value="s"> <input type=hidden name="setcontext" value=""> </td> <td height="25" width="50" align="left">&nbsp;<input type="image" src="/utils/common/img/exalead.gif" border="0"> </td> </tr> </table></center> </form> <div align="left"> <!-- welcome section --> <!-- --> <!-- highlights --> <a href="http://www.sif.it/SIF/it/portal/attivita/scuola_fermi/mmxii#clxxxv" class="introGras">International School of Physics "Enrico Fermi": Metrology and Physical Constants</a>: Applications for the Varenna Summer Schools are now open. Course CLXXXV &#150; "Metrology and Physical Constants", co-directed by E. Bava (INRIM) and M. K&uuml;hne (BIPM) &#150; will run from 17-27 July 2012. <br> &#150; <a href="http://www.sif.it/SIF/resources/public/files/va2012/official-announcement.pdf" class="introGras">Closing date for applications: <nobr>5 May 2012</nobr></a><br /> <br /> <a href="http://www.metrologyinfo.org/" class="introGras">JCGM surveys on the VIM3 and the GUM</a>: The Joint Committee for Guides in Metrology (<a href="/en/committees/jc/jcgm/" class="intro">JCGM</a>) and its two working groups seek your feedback on the <i>International vocabulary of metrology &#150; Basic and general concepts and associated terms</i> (<a href="/en/publications/guides/vim.html" class="intro">VIM3</a>), and the <i>Guide for the expression of uncertainty in measurement</i> (<a href="/en/publications/guides/gum.html" class="intro">GUM</a>). We encourage you to complete the online questionnaires now available from the Joint BIPM-OIML Web Portal, <a href="http://www.metrologyinfo.org/" class="introGras">http://www.metrologyinfo.org/</a>.<!: see> <!li><!"><!a href="http://www.metrologyinfo.org/vim_survey.html" class="intro"><!JCGM Survey on the usability of the VIM3><!/a><!", and><!/li> <!li><!"><!a href="http://www.metrologyinfo.org/gum_survey.html" class="intro"><!JCGM Survey on the revision of the GUM><!/a><!".><!/li><br> &#150; Thank you in advance for your participation in this survey and for helping the JCGM to better serve the needs of the metrology community.<br>Deadline: 15 June 2012.<br /> <br /> <a href="/utils/en/pdf/vacancy_ir_director_2012.pdf" class="introGras">Vacancy announcement : Ionizing Radiation Department Director</a>: &#150; Closing date for applications: <nobr><b>29 February 2012</b></nobr><br /> <br /> <a href="http://www.itu.int/net/pressoffice/press_releases/2012/03.aspx" class="introGras"><font color="#F65200">PRESS RELEASE:</font> ITU Radiocommunication Assembly defers decision to eliminate the leap second</a>: The ITU Radiocommunication Assembly has reached an important decision to defer the development of a continuous time standard in order to address the concerns of countries that use the current system of the leap second in Coordinated Universal Time (UTC).<br> The decision has been reached to ensure that all the technical options have been fully addressed in further studies related to the issue. These studies will involve further discussions within the ITU membership and with other organizations that have an interest in this matter and will be referred to the next Radiocommunication Assembly and World Radiocommunication Conference scheduled for 2015. <br> &#150; ITU, Geneva, 19 January 2012<br /> <br /> <a href="http://stacks.iop.org/0026-1394/48/i=6" class="introGras">Special issue of <i>Metrologia</i> on Neutron Metrology</a>: This special issue completes <i>Metrologia</i>'s trilogy on measurements in Ionizing Radiation, comprising issues on <a href="http://stacks.iop.org/0026-1394/44/i=4" class="IntroMetro">Radionuclide Metrology</a>, <a href="http://stacks.iop.org/0026-1394/46/i=2" class="IntroMetro">Dosimetry</a>, and <a href="http://stacks.iop.org/0026-1394/48/i=6" class="IntroMetro">Neutron Metrology</a>. This essential reference provides a broad overview of neutron metrology, aiming to give both a clear introduction to the novice as well as an up-to-date description of the latest scientific developments for the more experienced reader.<br> Guest editors: David Thomas (NPL), Ralf Nolte (PTB) and Vincent Gressier (IRSN)<br> &#150; <a href="http://stacks.iop.org/0026-1394/48/i=6" class="IntroMetro">Browse <i>Metrologia</i> 48(6), December 2011</a><br /> <br /> <a href="http://kcdb.bipm.org/NL/16/NL_16_Dec11_content.html" class="introGras">KCDB Newsletter</a>: Issue 16 (December 2011) is now available<br> &#150; December 2011<br /> <br /> <div align="right"><nobr>[ <a href="/en/practical_info/news/" class="intro">See more highlights</a> ]</nobr></div> </div></td> </tr> </table></td> </tr> </table> </td> </tr> <tr height="5"> <td colspan="7"><img src="/utils/common/img/pix.gif" width="5" height="5" alt=""></td> </tr> <tr> <td colspan="7" class="txt11pt"><div align="left"><strong>BIPM Pavillon de Breteuil F-92312 S&egrave;vres Cedex FRANCE</strong></div></td> </tr> <tr> <td colspan="7" class="txt11pt"> <div align="center"> Web : <a href="http://www.bipm.org" class="intros">www.bipm.org</a>&nbsp;;&nbsp&nbsp; T&eacute;l : +33 1 45 07 70 70&nbsp;;&nbsp;&nbsp; T&eacute;l&eacute;copie : +33 1 45 34 20 21</div><br></td> </tr> </table> </div> <!-- /fixed-position table with pictures and news---> </body> </html> <!-- Powered By: Cofax at Sevres -->