细节
BÉGUYER DE CHANCOURTOIS, Alexandre-Émile (1820-86). Vis Tellurique Classement Naturel des Corps Simples ou Radicaux obtenu au moyen d'un system de classification hélicoidal numérique, Paris, Mallet-Bachelier, 1863 [but 1862-66], 4°, 4 folding lithographed tables loose in end pocket (pocket torn), original cloth-backed wrappers (rubbed); and 13 others by Brouwer and Mayer.
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Béguyer's work, a precursor to the periodic table, was devised by following a helical graph round a cylinder. By a division of the circumference into sixteen points, he was able to calculate the seventeenth and following points, thus producing a link between elements in successive columns in relation to their specific weights.
(14)
Béguyer's work, a precursor to the periodic table, was devised by following a helical graph round a cylinder. By a division of the circumference into sixteen points, he was able to calculate the seventeenth and following points, thus producing a link between elements in successive columns in relation to their specific weights.