Titlebook: Episodes from the History of the Rare Earth Elements; C. H. Evans Book 1996 Kluwer Academic Publishers 1996 Calcium.Gadolinium.lanthanum.m

Extort

Sustainable Development Goals SeriesThe discovery of a new element is not an isolated event. Several small consecutive observations often lead to new presentations of a problem. When the time is ripe and the different observations combine with new knowledge, all the bits and pieces fit together and a beautiful new discovery is made.

并排上下

压迫

增强

Carl Auer Von Welsbach: A Pioneer in the Industrial Application of Rare EarthsIn this paper the contributions of Dr. Carl Auer von Welsbach to science and technology will be divided into four sections. The order is not exactly determined by the chronology of his life, since it makes more sense to deal with the different areas that he studied in his scientific and industrial career. The sections are:

adduction

刚开始

懒惰人民

regale

FLING

admission

Anaesthesie in der Augenheilkundeof 16 years. The principal concern of the later and more bitter controversy was element 72, which is not a rare earth, but a zirconium homologue. Nonetheless, from a historical point of view the discovery of hafnium is an integral part of the discovery histories of the rare earths, which would be in