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Title: Sur une substance nouvelle radio-active, continue dans la pechblende. IDEM, (2) Sur une nouvelle substance fortement radio-active, contenue dans la pechblende. (3) Demarçay, E. Sur le spectre d
Description: Paris, Ac. des sciences, 1898. Vol. 127. 4to. Hlf.mor. (pp. 175-178, 1215-1217, 1218). 1/2 DSB Vol III pp. 497-508: G&M. p. 2003: PMM 394 sub: Becquerel 16, 18 and 19: Dibner, Heralds of science 164: 'In December 1898, it was disclosed that compounds of barium extracted from pitchblende contained a new radioactive substance a million times more active than that of the uranium of Becquerel; it was named 'radium'. In the first paper the Curies first ued the word 'radioactive': Cajori: p. 296: 'Tracing the course of events somewhat more minutely, we find that the earliest determination of the spectrum of radium was made by E. Demarçay (1852-1904), from ore specimens by Mme. Curie. He found in the spectrum of impure radium chloride, besides the lines of barium, lead, calcium ans platinum, a strong new line..., which in his opinion confirmed the existence of a new element.'; First edition of the first announcement of the discovery of radium and polonium, never reprinted.: Tog. w. 4) A.H. Becquerel, Recherches sur une proprieté nouvelle de la matière. Paris 1903, 4to. w. 13 pls. Pr. wr (IV, 360, 4 pp.). 4) DSB Vol.I, pp.558/562: In 1903 the Nobel Prize for physics was divided between H. Becquerel and P. and M. Curie. It was an appropiate division. Becquerel's pioneer investigations had opened the way to the Curie's discoveries, and their discoveries had validated and shown the importance of his.' Dibner, Heralds, p. 163:

Keywords: natuurkunde

Price: EUR 2500.00 = appr. US$ 2717.12 Seller: Antiquariaat B.M.Israel B.V.
- Book number: 1583