{"id":7739,"date":"2020-09-21T10:53:51","date_gmt":"2020-09-21T10:53:51","guid":{"rendered":"https:\/\/www.ipq.pt\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/a-reforma-de-d-joao-vi\/"},"modified":"2023-02-13T12:51:31","modified_gmt":"2023-02-13T12:51:31","slug":"the-reform-of-king-joao-vi","status":"publish","type":"page","link":"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/the-reform-of-king-joao-vi\/","title":{"rendered":"The reform of King Jo\u00e3o VI"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container hundred-percent-fullwidth non-hundred-percent-height-scrolling\" 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fusion-content-layout-column\"><div class=\"fusion-widget fusion-widget-element fusion-widget-area fusion-content-widget-area wpWidget-1 menu_v_template1 fusion_widget_vertical_menu no-divider-color\" style=\"--awb-fusion-border-size:0px;--awb-fusion-border-style:solid;\"><div class=\"widget avada_vertical_menu\"><style>#fusion-vertical-menu-widget-avada-vertical-menu-widget-1-nav ul.menu li a {font-size:14px;}<\/style><nav id=\"fusion-vertical-menu-widget-avada-vertical-menu-widget-1-nav\" class=\"fusion-vertical-menu-widget fusion-menu hover left no-border\" aria-label=\"Secondary navigation\"><ul id=\"menu-metrology-museum\" class=\"menu\"><li id=\"menu-item-18619\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-18619\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/\"><span class=\"link-text\"> metrology museum<\/span><span class=\"arrow\"><\/span><\/a><ul class=\"sub-menu\"><li id=\"menu-item-7520\" class=\"menu-item 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href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-first-weights-and-measures\/\"><span class=\"link-text\"> The first weights and measures<\/span><span class=\"arrow\"><\/span><\/a><ul class=\"sub-menu\"><li id=\"menu-item-7605\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7605\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-first-weights-and-measures\/length-measures\/\"><span class=\"link-text\"> Length measures<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7654\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7654\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-first-weights-and-measures\/volume-measures\/\"><span class=\"link-text\"> Volume measures<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7653\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7653\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-first-weights-and-measures\/the-weight-mass\/\"><span class=\"link-text\"> The weight\u00a0(mass)<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7656\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7656\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-first-weights-and-measures\/early-reforms-towards-standardization\/\"><span class=\"link-text\"> Early reforms towards standardization<\/span><span class=\"arrow\"><\/span><\/a><\/li><\/ul><\/li><li id=\"menu-item-7718\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-7718\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/metrological-reforms-of-the-modern-era\/\"><span class=\"link-text\"> Metrological reforms of the modern era<\/span><span class=\"arrow\"><\/span><\/a><ul class=\"sub-menu\"><li id=\"menu-item-7717\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7717\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/metrological-reforms-of-the-modern-era\/the-manueline-reform\/\"><span class=\"link-text\"> The Manueline reform<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7716\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7716\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/metrological-reforms-of-the-modern-era\/the-reform-of-king-sebastiao\/\"><span class=\"link-text\"> The Reform of King Sebasti\u00e3o<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7715\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7715\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/metrological-reforms-of-the-modern-era\/the-philippine-dynasty\/\"><span class=\"link-text\"> The Philippine Dynasty<\/span><span class=\"arrow\"><\/span><\/a><\/li><\/ul><\/li><li id=\"menu-item-7767\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-7767\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/\"><span class=\"link-text\"> The decimal metric system<\/span><span class=\"arrow\"><\/span><\/a><ul class=\"sub-menu\"><li id=\"menu-item-7764\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7764\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/creation-of-the-decimal-metric-system\/\"><span class=\"link-text\"> Creation of the decimal metric system<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7763\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7763\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/the-reform-of-king-joao-vi\/\"><span class=\"link-text\"> The reform of King Jo\u00e3o VI<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7762\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7762\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/adoption-and-promotion-of-the-metric-system\/\"><span class=\"link-text\"> Adoption and promotion of the metric system<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-8440\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-8440\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/the-meter-convention\/\"><span class=\"link-text\"> The meter convention<\/span><span class=\"arrow\"><\/span><\/a><\/li><\/ul><\/li><\/ul><\/li><li id=\"menu-item-8441\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-8441\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/collaboration-with-nadl\/\"><span class=\"link-text\"> Collaboration with NADL<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7921\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-7921\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/other-services\/\"><span class=\"link-text\"> Other services<\/span><span class=\"arrow\"><\/span><\/a><ul class=\"sub-menu\"><li id=\"menu-item-7920\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7920\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/other-services\/purchase-of-the-book-weights-and-measures-in-portugal\/\"><span class=\"link-text\"> Purchase of the book &#8220;Weights and measures in Portugal&#8221;<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7919\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7919\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/other-services\/historical-archive\/\"><span class=\"link-text\"> Historical archive<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-8451\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-8451\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/other-services\/teaching-materials-museum\/\"><span class=\"link-text\"> Teaching materials<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7918\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7918\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/other-services\/bibliography\/\"><span class=\"link-text\"> Bibliography<\/span><span class=\"arrow\"><\/span><\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_2_3 2_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:66.666666666667%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.88%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:2.88%;--awb-width-medium:100%;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-text fusion-title-size-two subtitulo-sh2\" style=\"--awb-text-color:#eeb614;--awb-font-size:20px;\"><h2 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;font-size:1em;--fontSize:20;--minFontSize:20;line-height:2;\">THE REFORM OF KING\u00a0JO\u00c3O\u00a0VI<\/h2><\/div><div class=\"fusion-text fusion-text-1 template-1-text\" style=\"--awb-margin-top:20px;\"><p><span data-contrast=\"auto\">At the beginning of the 19<\/span><span data-contrast=\"auto\">th<\/span><span data-contrast=\"auto\">\u00a0century, the systems of weights and measures in Portugal were basically those that had resulted from the reform that King Manuel I had carried out more than 300 years ago, with the updates of King\u00a0<\/span><span data-contrast=\"auto\">Sebasti\u00e3o<\/span><span data-contrast=\"auto\">.<\/span><\/p>\n<p><span data-contrast=\"auto\">In 1812, a\u00a0<\/span><i><span data-contrast=\"auto\">Comiss\u00e3o<\/span><\/i><i><span data-contrast=\"auto\">\u00a0para o\u00a0<\/span><\/i><i><span data-contrast=\"auto\">Exame<\/span><\/i><i><span data-contrast=\"auto\">\u00a0dos\u00a0<\/span><\/i><i><span data-contrast=\"auto\">Forais<\/span><\/i><i><span data-contrast=\"auto\">\u00a0e\u00a0<\/span><\/i><i><span data-contrast=\"auto\">Melhoramentos<\/span><\/i><i><span data-contrast=\"auto\">\u00a0da Agricultura<\/span><\/i><span data-contrast=\"auto\">\u00a0(Commission for the Examination of Charters and Improvements in Agriculture) was appointed, which recommended the reform of the system of weights and<\/span><span data-contrast=\"auto\">\u00a0measures. Thus, the government ordered that, in collaboration with the\u00a0<\/span><i><span data-contrast=\"auto\">Academia Real das\u00a0<\/span><\/i><i><span data-contrast=\"auto\">Ci\u00eancias<\/span><\/i><span data-contrast=\"auto\">\u00a0(Royal Academy of Sciences), &#8220;form a plan for the equality of weights and measures proper to the great knowledge and lights of the century, under a general system with a solid and permanent base&#8221;.<\/span><\/p>\n<p><span data-contrast=\"auto\">This work resulted in a report presented to the prince regent D. Jo\u00e3o (future King Jo\u00e3o VI), which recommended the use of a system based on the measures of the new French metric system (whose fundamental unit was the\u00a0<\/span><i><span data-contrast=\"auto\">m\u00e8tre<\/span><\/i><span data-contrast=\"auto\">), but with Portuguese terminology. The new system included linear, capacity and weight measurements, with equivalence relationships between the various base units based on the water element.<\/span><\/p>\n<p><span data-contrast=\"auto\">Thus, the fundamental unit was the\u00a0<\/span><strong><i>m\u00e3o-travessa<\/i><\/strong><span data-contrast=\"auto\">, which corresponded to 1\/10 of the French\u00a0<\/span><i><span data-contrast=\"auto\">m\u00e8tre<\/span><\/i><span data-contrast=\"auto\">; the cubic hand (corresponding to a &#8220;liter&#8221;) was called\u00a0<\/span><i><span data-contrast=\"auto\">canada<\/span><\/i><span data-contrast=\"auto\">\u00a0(old measure of volumes of liquids), and a\u00a0<\/span><strong><i>canada<\/i><\/strong><span data-contrast=\"auto\">\u00a0of distilled water would weigh one <strong>libra<\/strong> (pound) which weighed one kilogram.<\/span><\/p>\n<p><span data-contrast=\"auto\">On December 20, 1814, it was decided to have 300 sets of the new standards for weights and measures executed at the\u00a0<\/span><i><span data-contrast=\"auto\">Junta da Fazenda do Arsenal do\u00a0<\/span><\/i><i><span data-contrast=\"auto\">Ex\u00e9rcito<\/span><\/i><span data-contrast=\"auto\">, according to prototypes that came from France, to be distributed by the Portuguese empire.<\/span><\/p>\n<p><span data-contrast=\"auto\">In 1820, a decree was sent to the\u00a0<\/span><i><span data-contrast=\"auto\">Real Junta da\u00a0<\/span><\/i><i><span data-contrast=\"auto\">Diretoria<\/span><\/i><i><span data-contrast=\"auto\">\u00a0dos\u00a0<\/span><\/i><i><span data-contrast=\"auto\">Estudos<\/span><\/i><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><span data-contrast=\"auto\">(Royal Board of Studies Directorate), ordering that the masters (teachers) make their students learn (&#8220;decorate&#8221;) a leaflet that divulged the new system, entitled\u00a0<\/span><i><span data-contrast=\"auto\">Breve\u00a0<\/span><\/i><i><span data-contrast=\"auto\">exposi\u00e7\u00e3o<\/span><\/i><i><span data-contrast=\"auto\">\u00a0do\u00a0<\/span><\/i><i><span data-contrast=\"auto\">sistema<\/span><\/i><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">m\u00e9trico<\/span><\/i><i><span data-contrast=\"auto\">\u00a0decimal a-<\/span><\/i><i><span data-contrast=\"auto\">fim<\/span><\/i><i><span data-contrast=\"auto\">-de\u00a0<\/span><\/i><i><span data-contrast=\"auto\">poderem<\/span><\/i><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">os<\/span><\/i><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">povos<\/span><\/i><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">ter<\/span><\/i><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">alcan\u00e7ado<\/span><\/i><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">suficiente<\/span><\/i><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">not\u00edcia<\/span><\/i><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">d\u00easte<\/span><\/i><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">sistema<\/span><\/i><i><span data-contrast=\"auto\">\u00a0antes\u00a0<\/span><\/i><i><span data-contrast=\"auto\">d\u00eale<\/span><\/i><i><span data-contrast=\"auto\">\u00a0se\u00a0<\/span><\/i><i><span data-contrast=\"auto\">come\u00e7ar<\/span><\/i><i><span data-contrast=\"auto\">\u00a0a\u00a0<\/span><\/i><i><span data-contrast=\"auto\">p\u00f4r<\/span><\/i><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">em<\/span><\/i><i><span data-contrast=\"auto\"><br \/>\n<\/span><\/i><i><span data-contrast=\"auto\">pr\u00e1tica <\/span><\/i><span data-contrast=\"auto\">(<\/span><span data-contrast=\"auto\">Brief Exposure of the decimal metric system so that the peoples may have reached enough news of this system before it begins to be put into practice).<\/span><\/p>\n<p><span data-contrast=\"auto\">Liberal wars delayed the dissemination and promotion of the new system, and alternative systems were even proposed. Only in 1843 did deputy Jo\u00e3o Baptista da Silva Lopes raise the matter in the\u00a0<\/span><i><span data-contrast=\"auto\">C\u00e2mara<\/span><\/i><i><span data-contrast=\"auto\">\u00a0dos\u00a0<\/span><\/i><i><span data-contrast=\"auto\">Deputados<\/span><\/i><span data-contrast=\"auto\">\u00a0(Chamber of Deputies), leading to the appointment of a commission that came to speak by the decimal metric system. 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template-1-text\"><\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":58,"featured_media":0,"parent":7719,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"100-width.php","meta":{"footnotes":""},"class_list":["post-7739","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages\/7739","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/users\/58"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/comments?post=7739"}],"version-history":[{"count":11,"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages\/7739\/revisions"}],"predecessor-version":[{"id":18440,"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages\/7739\/revisions\/18440"}],"up":[{"embeddable":true,"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages\/7719"}],"wp:attachment":[{"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/media?parent=7739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}