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Erbium is a chemical element; it has symbol Er and atomic number 68. A silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. It is a lanthanide, a rare-earth element, originally found in the gadolinite mine in Ytterby, Sweden, which is the source of the element's name.
Ames, raised in New York City, was a graduate of the Bronx High School of Science. His undergraduate studies were at Cornell University in Ithaca, New York, and his graduate studies were completed at the California Institute of Technology. [4] Ames in 2003. Ames was elected a Fellow of the American Academy of Arts and Sciences in 1970. [5]
Jean Marian Purdy was born in Cambridge on 25 April 1945. [5] She attended Cambridgeshire High School for Girls between 1956 and 1963 where she became a prefect, joined sports teams and played violin in the orchestra.
The identification of new "earths" extended over 100 years, and eventually led to the understanding of elements and their relationships in the periodic system. [12] [19] Ytterbite was eventually found to contain eight stable rare earth elements (terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and yttrium).
Spira took out this ad in The New York Times on 15 April 1980, leading Revlon to begin the search for alternatives to the Draize test. Spira told The New York Times that he first became interested in animal rights in 1973 while looking after Nina, [7] a friend's cat: "I began to wonder about the appropriateness of cuddling one animal while ...
Owing to his father's low income, Albert's godfather paid for his education. Hofmann's main interest was the chemistry of plants and animals, and he later conducted important research on the chemical structure of the common animal substance chitin, for which he received his doctorate with distinction in 1929. [6]
Pages in category "Erbium" The following 6 pages are in this category, out of 6 total. This list may not reflect recent changes. ...
March 27 – In Sweden, Ruben Rausing patents Erik Wallenberg's method of packaging milk in paper, origin of the company Tetra Pak. [11]June 13 – First operational use of the German V-1 flying bomb, the first operational cruise missile, containing a gyroscope guidance system and propelled by a simple pulsejet engine.