出典:Wiktionary
A New Latin word derived by Swedish chemist Anders Gustaf Ekeberg in 1802, from Latin Tantalus,[1] named after Tantalus, alluding to the element's incapacity to absorb acid. See -ium.
tantalum (countable かつ uncountable, 複数形 tantalums)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/01 18:08 UTC 版)
Tantalum ( /ˈtæntələm/ tan-təl-əm) is a chemical element with the symbol Ta and atomic number 73. Previously known as tantalium, the name comes from Tantalus, a hero in Greek mythology. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion resistant. It is part of the refractory metals group, which are widely used as minor component in alloys. The chemical inertness of tantalum makes it a valuable substance for laboratory equipment and a substitute for platinum, but its main use today is in tantalum capacitors in electronic equipment such as mobile phones, DVD players, video game systems and computers. Tantalum, always together with the chemically similar niobium, occurs in the minerals tantalite, columbite and coltan (a mix of columbite and tantalite).