{"id":2162,"date":"2021-11-06T09:31:28","date_gmt":"2021-11-06T08:31:28","guid":{"rendered":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/?p=2162"},"modified":"2022-03-24T08:53:49","modified_gmt":"2022-03-24T07:53:49","slug":"prefixes","status":"publish","type":"post","link":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/2021\/11\/06\/prefixes\/","title":{"rendered":"Pr\u00e9fixes"},"content":{"rendered":"<p>Lors des passages de concours, on va certainement vous demander des conversions&#8230;<\/p>\n<p>Chaque grandeur peut avoir \u00e0 couvrir une vaste \u00e9tendue de valeurs. Pour \u00e9viter d&#8217;avoir \u00e0 utiliser des facteurs multiplicatifs ou des valeurs avec un grand nombre de z\u00e9ros, on utilise des pr\u00e9fixes. Ces derniers vont permettre de couvrir une gamme allant de 10<sup>24<\/sup> \u00e0 10<sup>-24<\/sup> fois l&#8217;unit\u00e9.<\/p>\n<p>A chaque pr\u00e9fixe correspond \u00e0 une puissance de 10. Pour convertir la mesure dans son unit\u00e9 SI, il suffit de remplacer le pr\u00e9fixe par la puissance de 10 ad\u00e9quate.<\/p>\n<p>Ce tableau vous sera \u00e9galement tr\u00e8s utile au quotidien dans votre labo \ud83d\ude09<\/p>\n<p>&nbsp;<\/p>\n<p>Voici un petit rappel:<\/p>\n<table style=\"width: 1040.3px;\" width=\"733\">\n<tbody>\n<tr>\n<td style=\"width: 70px;\" width=\"59\"><\/td>\n<td style=\"width: 449px;\" colspan=\"10\" width=\"317\">Multiples<\/td>\n<td style=\"width: 48px;\" colspan=\"3\" width=\"38\">unit\u00e9<\/td>\n<td style=\"width: 473.297px;\" colspan=\"10\" width=\"319\">Sous-multiples<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 70px;\" width=\"59\">Pr\u00e9fixe<\/td>\n<td style=\"width: 49px;\" width=\"33\">yotta<\/td>\n<td style=\"width: 48px;\" width=\"33\">zetta<\/td>\n<td style=\"width: 46px;\" width=\"33\">exa<\/td>\n<td style=\"width: 45px;\" width=\"33\">p\u00e9ta<\/td>\n<td style=\"width: 46px;\" width=\"33\">t\u00e9ra<\/td>\n<td style=\"width: 42px;\" width=\"33\">giga<\/td>\n<td style=\"width: 50px;\" width=\"33\">m\u00e9ga<\/td>\n<td style=\"width: 39px;\" width=\"33\">kilo<\/td>\n<td style=\"width: 52px;\" width=\"33\">hecto<\/td>\n<td style=\"width: 49px;\" colspan=\"2\" width=\"33\">d\u00e9ca<\/td>\n<td style=\"width: 31px;\" width=\"19\"><\/td>\n<td style=\"width: 42.2969px;\" colspan=\"2\" width=\"33\">d\u00e9ci<\/td>\n<td style=\"width: 47px;\" width=\"33\">centi<\/td>\n<td style=\"width: 43px;\" width=\"33\">milli<\/td>\n<td style=\"width: 52px;\" width=\"33\">micro<\/td>\n<td style=\"width: 47px;\" width=\"33\">nano<\/td>\n<td style=\"width: 43px;\" width=\"33\">pico<\/td>\n<td style=\"width: 54px;\" width=\"33\">femto<\/td>\n<td style=\"width: 42px;\" width=\"33\">atto<\/td>\n<td style=\"width: 52px;\" width=\"33\">zepto<\/td>\n<td style=\"width: 51px;\" width=\"33\">yocto<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 70px;\" width=\"59\">Symbole<\/td>\n<td style=\"width: 49px;\" width=\"33\">Y<\/td>\n<td style=\"width: 48px;\" width=\"33\">Z<\/td>\n<td style=\"width: 46px;\" width=\"33\">E<\/td>\n<td style=\"width: 45px;\" width=\"33\">P<\/td>\n<td style=\"width: 46px;\" width=\"33\">T<\/td>\n<td style=\"width: 42px;\" width=\"33\">G<\/td>\n<td style=\"width: 50px;\" width=\"33\">M<\/td>\n<td style=\"width: 39px;\" width=\"33\">k<\/td>\n<td style=\"width: 52px;\" width=\"33\">h<\/td>\n<td style=\"width: 32px;\" width=\"33\">da<\/td>\n<td style=\"width: 17px;\"><\/td>\n<td style=\"width: 31px;\" width=\"19\"><\/td>\n<td style=\"width: 42.2969px;\" colspan=\"2\" width=\"33\">d<\/td>\n<td style=\"width: 47px;\" width=\"33\">c<\/td>\n<td style=\"width: 43px;\" width=\"33\">m<\/td>\n<td style=\"width: 52px;\" width=\"33\">\u00b5<\/td>\n<td style=\"width: 47px;\" width=\"33\">n<\/td>\n<td style=\"width: 43px;\" width=\"33\">p<\/td>\n<td style=\"width: 54px;\" width=\"33\">f<\/td>\n<td style=\"width: 42px;\" width=\"33\">a<\/td>\n<td style=\"width: 52px;\" width=\"33\">z<\/td>\n<td style=\"width: 51px;\" width=\"33\">y<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 70px;\" width=\"59\">facteur<\/td>\n<td style=\"width: 49px;\" width=\"33\">10<sup>24<\/sup><\/td>\n<td style=\"width: 48px;\" width=\"33\">10<sup>21<\/sup><\/td>\n<td style=\"width: 46px;\" width=\"33\">10<sup>18<\/sup><\/td>\n<td style=\"width: 45px;\" width=\"33\">10<sup>15<\/sup><\/td>\n<td style=\"width: 46px;\" width=\"33\">10<sup>12<\/sup><\/td>\n<td style=\"width: 42px;\" width=\"33\">10<sup>9<\/sup><\/td>\n<td style=\"width: 50px;\" width=\"33\">10<sup>6<\/sup><\/td>\n<td style=\"width: 39px;\" width=\"33\">10<sup>3<\/sup><\/td>\n<td style=\"width: 52px;\" width=\"33\">10<sup>2<\/sup><\/td>\n<td style=\"width: 49px;\" colspan=\"2\" width=\"33\">10<sup>1<\/sup><\/td>\n<td style=\"width: 31px;\" width=\"19\">1<\/td>\n<td style=\"width: 42.2969px;\" colspan=\"2\" width=\"33\">10<sup>-1<\/sup><\/td>\n<td style=\"width: 47px;\" width=\"33\">10<sup>-2<\/sup><\/td>\n<td style=\"width: 43px;\" width=\"33\">10<sup>-3<\/sup><\/td>\n<td style=\"width: 52px;\" width=\"33\">10<sup>-6<\/sup><\/td>\n<td style=\"width: 47px;\" width=\"33\">10<sup>-9<\/sup><\/td>\n<td style=\"width: 43px;\" width=\"33\">10<sup>-12<\/sup><\/td>\n<td style=\"width: 54px;\" width=\"33\">10<sup>-15<\/sup><\/td>\n<td style=\"width: 42px;\" width=\"33\">10<sup>-18<\/sup><\/td>\n<td style=\"width: 52px;\" width=\"33\">10<sup>-21<\/sup><\/td>\n<td style=\"width: 51px;\" width=\"33\">10<sup>-24<\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>Lors des passages de concours, on va certainement vous demander des conversions&#8230; Chaque grandeur peut avoir \u00e0 couvrir une vaste \u00e9tendue de valeurs. Pour \u00e9viter d&#8217;avoir \u00e0 utiliser des facteurs multiplicatifs ou des valeurs avec un grand nombre de z\u00e9ros, on utilise des pr\u00e9fixes. Ces derniers vont permettre de couvrir une gamme allant de 1024 &hellip; <a href=\"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/2021\/11\/06\/prefixes\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Pr\u00e9fixes<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26,1,7],"tags":[],"class_list":["post-2162","post","type-post","status-publish","format-standard","hentry","category-generalites","category-non-classe","category-securite-au-labo"],"_links":{"self":[{"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/posts\/2162","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/comments?post=2162"}],"version-history":[{"count":5,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/posts\/2162\/revisions"}],"predecessor-version":[{"id":3804,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/posts\/2162\/revisions\/3804"}],"wp:attachment":[{"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/media?parent=2162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/categories?post=2162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/toulouse-sgencfdt.fr\/WORDPRESS_ITRF\/wp-json\/wp\/v2\/tags?post=2162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}