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Paleolithic

IL COLORE NERO DEI MAMMOUTH DI ROUFFIGNAC

Nel novembre 2004, Jacques de Sanoit e Dominique Chambellan, due ricercatori francesi del Commissariat à l’Energie Atomique (CEA), hanno sperimentato l’utilizzo dei Raggi X per analizzare la composizione delle pitture nere di Rouffignac. Quando il Raggio X tocca la materia colorante viene leggermente modificato dai componenti del colore. Tale modifica, esaminta dal computer, rivela le componenti che hanno modificato il Raggio X. Nel caso di Rouffignac i componenti del colore nero sono tre metalli: ferro, manganese e bario.


Démasquons les mammouths !

Discussion

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