The volatile matter of coal

• Publisher: Elsevier Science
• Year: 1911
• Tongue: English
• Weight: 91 KB
• Volume: 171
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(11)91024-2

✦ Synopsis

1 [5 gate, this shrinkage m~ay be overcome. The toughness of aluminumbronze is greater than that of any metal except steel. It works hot better than copper, as it is softer at a red heat, and it is not black-short like copper and zinc alloys.

The Spectrum of Radium Emanation. H.E. WATSON. (Proc. Roy. Soc. London, A., lxxxiii, 5o.)--Royds, in a criticism of Cameron and Ramsay's spectrum, stated that this included Xe lines, on which account this research was undertaken. The gas was purified by Ramsay, being sparked in the presence of fused K©H, frozen in liquid air, and the excess of hydrogen pumped off. Photographs were taken with a prism spectrograph and with a grating, and compared with an Xe spark spectrum. The author concludes that ten of Collie and Ramsays lines were due to the emanation, and the remalnder were m~ercury lines. The identity of Xe lines in Cameron and Ramsay's spectrum is undoubted, but could not be due to accidental contamination, as Royds suggested. No Xe ever entered R_amsay's private labdratory, and contamination by air would have introduced Kr lines also. Apparently the emanation has broken down into Xe, possibly Cu acted as the transforming agent.