115847-01
Crookes, William.
On Thallium.

(London, Selbstverlag, 1863). - (29,5 x 22,5 cm). SS. 173-192. Rückenbroschur. (Aus: Proceedings of the Royal Society).

Einzige Ausgabe. - "Crookes was an experimentalist of consummate skill, and the brilliance of his experimentation was the dominant feature in his scientific career... From 1861 to 1871 Crookes patiently developed techniques to determine the atomic weight of thallium, deliberately modeling his standards on the hitherto exacting determinations of atomic weights that had been made by J. S. Stas. Once he had decided to make the determination by the formation of thallium nitrate from the heavy metal, and to check by the precipitation of barium sulfate from thallium sulfate, he took extraordinary pains to purify his reagents, to calibrate his platinum balance weights relative to one another, and to use an extremely sensitive Oertling balance mounted in an iron case that could be exhausted of air" (DSB). - Erstes und letztes Blatt leicht fleckig, sonst gut erhalten. - DSB 3, 474


150 €