| 释义 |
indium Chem.|ˈɪndɪəm|
[f. radical of ind-icum indigo + -ium, after sodium, etc.; in reference to the two indigo lines which form the characteristic spectrum of the metal.]
A soft silver-white metal of extreme rarity, occurring in association with zinc and other metals; discovered by Reich and Richter in 1863, by means of spectrum analysis, in the zinc-blende of Freiberg. Symbol In.
1864Lyell. Inaug. Addr. in Reader 17 Sept. 358 A fourth metal named indium, from its indigo-coloured band, was detected by Professor Richter of Freiberg in Saxony in a zinc ore of the Hartz. 1874tr. Lommel's Light 114 The blue light of Indium undergoes a still stronger refraction than that of Thallium. 1882Nature No. 639. 290 He finds that indium is like some other metals in not coming under the often-accepted rule that pure metals have a change of coefficient of resistance with temperature.
b. attrib., as indium bromide (In Br), indium chloride, indium monochloride (In Cl), indium dichloride (In Cl2), indium trichloride (In Cl3); indium iodide, indium oxide, indium hydroxide; indium salts, etc.
1897Roscoe & Schorlemmer Chem. II. 609 Indium Oxide In2O3 is a pale yellow powder. Ibid. 611 Indium Ammonium Alum..is deposited in well-defined regular octohedra. |