5184 x 3455 px | 43,9 x 29,3 cm | 17,3 x 11,5 inches | 300dpi
Date de la prise de vue:
21 février 2014
Informations supplémentaires:
"The main application of scandium by weight is in aluminium-scandium alloys for minor aerospace industry components. These alloys contain between 0.1% and 0.5% of scandium. They were used in the Russian military aircraft, specifically the MiG-21 and MiG-29. The lanthanide or lanthanoid series of chemical elements comprises the fifteen metallic chemical elements with atomic numbers 57 through 71, from lanthanum through lutetium. These fifteen lanthanide elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements (this name arises from the minerals from which they were isolated, which were uncommon oxide-type minerals.). The term "lanthanide" was introduced by Victor Goldschmidt in 1925." Wikipedia info
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