{"id":637,"date":"2019-02-22T08:09:36","date_gmt":"2019-02-22T07:09:36","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/lehning\/?p=637"},"modified":"2019-03-02T09:55:59","modified_gmt":"2019-03-02T08:55:59","slug":"los-dishango","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/02\/22\/los-dishango\/","title":{"rendered":"L’os d’Ishango"},"content":{"rendered":"

Au mus\u00e9e des sciences naturelles de Bruxelles, se trouve un os stri\u00e9 de nombreuses entailles, d\u00e9couvert dans les ann\u00e9es 1950 \u00e0 Ishango au Congo belge (devenu RDC) par Jean de Heinzelin de Braucourt (1920\u00a0\u2013\u00a01998). Cet os dat\u00e9 de 20000 ans avant notre \u00e8re n\u2019est pas le plus ancien artefact de ce type connu, mais le nombre de ses entailles a donn\u00e9 un grand nombre d\u2019hypoth\u00e8ses.<\/p>\n

Compter les entailles<\/h2>\n
\"\"
L’os d’Ishango est couvert de stries.<\/figcaption><\/figure>\n

Si on sait chercher, on y trouve le nombre 60 qui, depuis les M\u00e9sopotamiens, est li\u00e9 \u00e0 l\u2019astronomie, des nombres premiers comme 11, 13, 17 et 19, etc<\/em>. Certains en ont d\u00e9duit qu\u2019il s\u2019agissait d\u2019un calendrier lunaire car 60 correspond presqu\u2019au nombre de jours de deux lunaisons. La somme des nombres de deux colonnes se retrouvant parfois ailleurs, d\u2019autres y voient l\u2019anc\u00eatre de la calculatrice. Une autre hypoth\u00e8se propos\u00e9e est qu\u2019il s\u2019agirait d\u2019un jeu math\u00e9matique qu\u2019aurait pratiqu\u00e9 l\u2019homme d\u2019Ishango.<\/p>\n

Calcul des probabilit\u00e9s<\/h2>\n

La multiplicit\u00e9 des hypoth\u00e8ses montre que leur origine commune r\u00e9side dans le calcul des probabilit\u00e9s\u00a0: plus vous consid\u00e9rez de nombres, plus vous y trouverez de relations entre eux et avec d\u2019autres. Il est cependant probable que l\u2019os d\u2019Ishango n\u2019ait \u00e9t\u00e9 destin\u00e9 qu\u2019\u00e0 compter, peut-\u00eatre du gibier. C\u2019est le plus important car cela prouve que l\u2019homme d\u2019Ishango savait compter, m\u00eame s\u2019il n\u2019\u00e9tait pas le premier.<\/p>\n","protected":false},"excerpt":{"rendered":"

Au mus\u00e9e des sciences naturelles de Bruxelles, se trouve un os stri\u00e9 de nombreuses entailles, d\u00e9couvert dans les ann\u00e9es 1950 \u00e0 Ishango au Congo belge (devenu RDC) par Jean de Heinzelin de Braucourt (1920\u00a0\u2013\u00a01998). Cet os dat\u00e9 de 20000 ans avant notre \u00e8re n\u2019est pas le plus ancien artefact de ce type connu, mais le … Continuer la lecture de L’os d’Ishango<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":12,"featured_media":639,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[8,63,29,10],"tags":[237,238,185],"class_list":["post-637","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-enigmes","category-histoire","category-maths-2","category-voyages","tag-archeologie","tag-ishango","tag-probabilites"],"yoast_head":"\nL'os d'Ishango, par Herv\u00e9 Lehning<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/02\/22\/los-dishango\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L'os d'Ishango, par Herv\u00e9 Lehning\" \/>\n<meta property=\"og:description\" content=\"Au mus\u00e9e des sciences naturelles de Bruxelles, se trouve un os stri\u00e9 de nombreuses entailles, d\u00e9couvert dans les ann\u00e9es 1950 \u00e0 Ishango au Congo belge (devenu RDC) par Jean de Heinzelin de Braucourt (1920\u00a0\u2013\u00a01998). 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