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target="_self">Meeting reports</a></li> <li><a href="/web/20200125210045/https://www1.bipm.org/en/worldwide-metrology/metrology-events.html" target="_self">External events</a></li> </ul> </li> </ul> </div> </td> </tr> </table> </center>   <table width="1000" border="0" cellspacing="0" cellpadding="0"> <tr> <td height="25" bgcolor="#DBE3EB"> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="10"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="10" height="25"></td> <td class="navigation" width="100%">> You are here: <a href="/web/20200125210045/https://www1.bipm.org/en/worldwide-metrology/" class="navigation">worldwide metrology</a> > <a href="/web/20200125210045/https://www1.bipm.org/en/worldwide-metrology/cgpm/" class="navigation">CGPM</a> > <a href="/web/20200125210045/https://www1.bipm.org/en/worldwide-metrology/cgpm/resolutions.html" class="navigation">outcomes</a> > <a href="/web/20200125210045/https://www1.bipm.org/en/CGPM/db/3/" class="navigation">3rd meeting</a> > Resolution</td> <td width="10"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="10" height="25"></td> </tr> </table> </td> </tr> </table>   <table width="1000" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="10" height="50"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="10" height="50"></td> <td align="left" width="100%" height="50" background="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/cadre_trait.gif"> <table width="100%" border="0" background="/web/20200125210045im_/https://www1.bipm.org/en/CGPM/db/3/2/"> <tr> <td><div align="left" class="GrosTitre">Resolution of the 3rd CGPM (1901)<br></div></td> <td align="right" nowrap><a href="/web/20200125210045/https://www1.bipm.org/fr/CGPM/db/3/2/" class="GrosTitreVO">Version française</a> </td> </tr> </table> </td> <td width="10" height="50"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="10" height="50"></td> </tr> </table>  <table width="1000" border="0" cellspacing="0" cellpadding="0"> <tr valign="top"> <td width="10"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="10"></td> <td width="100%" align="left" class="SousTitre">  <table width="100%" bgcolor="#F2F5F8" border="0" cellpadding="0" cellspacing="0"> <tr> <td width="10"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="10"></td> <td valign="top" width="100%" class="txt12pt" align="justify">  <table width="100%" border="0" cellpadding="10"> <tr> <td class="SousTitre" valign="top"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/fleche_jaune.gif" width="29"> Declaration on the unit of mass and on the definition of weight; conventional value of <i>g</i><sub>n</sub><a href="#notes" class="intros">*</a> </td> </tr> </table>   <table width="100%" bgcolor="#F2F5F8" border="0" cellpadding="0" cellspacing="0"> <tr> <td width="10"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="10"></td> <td valign="top" width="100%" class="txt12pt"> <ul> <p><b>Taking into account </b>the decision of the Comité International des Poids et Mesures of <nobr>15 October 1887,</nobr> according to which the kilogram has been defined as unit of mass;</p> <p><b>Taking into account</b> the decision contained in the sanction of the prototypes of the Metric System, unanimously accepted by the Conférence Générale des Poids et Mesures on <nobr>26 September 1889;</nobr></p> <p><b>Considering</b> the necessity to put an end to the ambiguity which in current practice still exists on the meaning of the word <i>weight</i>, used sometimes for <i>mass</i>, sometimes for <i>mechanical force</i>;</p> <p><b>The Conference declares</b></p> <ol><li>The kilogram is the unit of mass; it is equal to the mass of the international prototype of the kilogram;</li> <li>The word "weight" denotes a quantity of the same nature as a "force": the weight of a body is the product of its mass and the acceleration due to gravity; in particular, the standard weight of a body is the product of its mass and the standard acceleration due to gravity;</li> <li>The value adopted in the International Service of Weights and Measures for the standard acceleration due to gravity is <nobr>980.665 cm/s<sup>2</sup>,</nobr> value already stated in the laws of some countries.</li></ol> </ul> </td> <td width="10"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="10" height="25"></td> </tr> </table> <br> <table border="0" width="100%" bgcolor="#F2F5F8"> <tr> <td width="20"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="20"></td> <td width="100%"><hr color="#829EBA" width="70%"></td> <td width="20" bgcolor="#F2F5F8"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="25"></td> </tr> <tr> <td><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="20"></td> <td class="txt12ptg">Reference:</td> <td><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="20"></td> </tr> <tr> <td bgcolor="#F2F5F8"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="20"></td> <td class="txt11pt"> <img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/bullet1.gif" width="16" height="9" alt=""> <a href="/web/20200125210045/https://www1.bipm.org/utils/common/pdf/CGPM/CGPM3.pdf#page=70" class="intros"><i>Comptes Rendus de la 3<sup>e</sup> CGPM</i> (1901), 1901, p.70</a> </td> </tr> <tr> <td width="20"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="20"></td> <td valign="top" width="100%" class="txt11pt" align="justify"> <a name="notes"><br></a> <table width="100%" bgcolor="#829EBA"><tr><td> <table width="100%" border="0" cellpadding="5" bgcolor="#FFFFFF"> <tr> <td> <table width="100%"> <tr> <td class="txt11pt" valign="top"><u>Note:</u><br/> <br/>This value of <i>g</i><sub>n</sub> was the conventional reference for calculating the now obsolete unit kilogram force.</td> <td width="120" align="right" valign="top"><a href="/web/20200125210045/https://www1.bipm.org/en/publications/si-brochure/"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/si_110.jpg" border="0"></a></td> </tr> </table> </td> </tr> </table> </td></tr></table> </td> <td width="20"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="20" height="25"></td> </tr> </table> <table width="100%" border="0" cellpadding="5"> <tr> <td> <p class="txt11ptl">The reader should note that the official version of this Resolution is the <a href="/web/20200125210045/https://www1.bipm.org/fr/CGPM/db/3/2/" class="intro">French text</a>.</p> </td> </tr> </table>  </td> <td width="10"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="10"></td> </tr> <tr height="5"> <td colspan="3"> </td> </tr> </table> </td> <td width="10"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="10"></td> <td width="200" valign="top"> <table width="180" border="0" cellspacing="0" cellpadding="4" bgcolor="#829EBA"> <tr> <td width="100%" height="100%" valign="top"> <table width="100%" border="0" cellspacing="0" cellpadding="0" bgcolor="#FFFFFF"> <tr> <td width="180" height="100%" valign="top"> <table width="180" border="0" cellpadding="3" bgcolor="#FFFFFF" cellspacing="0" height="100%"> <tr align="left" valign="middle" bgcolor="#00498F"> <td height="25" valign="top" bgcolor="#829EBA" class="cadreTrt"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/flc_dir.gif" width="18" height="18"> Other Resolutions of the 3rd CGPM (1901)</nobr></td> </tr> <tr> <td height="100%" valign="top" class="intro"> <img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/bullet6.gif" width="16" height="9"><a class="introGras" href="/web/20200125210045/https://www1.bipm.org/en/CGPM/db/3/1/">Resolution 1</a><br><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/bullet1.gif" width="16" height="9"><a class="introGras" href="/web/20200125210045/https://www1.bipm.org/en/CGPM/db/3/2">Resolution 2</a><br> </td> </tr> </table></td> </tr> </table></td> </tr> </table> <img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="10" height="5"> </td> <td width="10"><img src="/web/20200125210045im_/https://www1.bipm.org/utils/common/img/pix.gif" width="10"></td> </tr> <tr> <td height="5" colspan="5"><img 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