| 释义 |
coronium|kɒˈrəʊnɪəm|
[f. corona 2, on the analogy of chemical names in -ium.]
An element formerly supposed to exist in a gaseous state in the sun's corona: the spectral lines attributed to it are now known to be due to highly ionized atoms of iron, nickel, and other elements. (Cf. helium.)
1890C. A. Young Elem. Astron. vi. §207 The characteristic feature of the visual spectrum [of the sun's corona] is a bright line in the green..It coincides with a dark line..on Kirchhoff's map of the solar spectrum..This dark line..is a close double, one of its components being due to iron, while the other is due to some unknown gaseous element, which has been called Coronium after the analogy of Helium. 1898Daily News 22 July 5/1 The latest sensation in the scientific world is the discovery of ‘terrestrial coronium’. 1956H. S. Jones in A. Pryce-Jones New Outl. Mod. Knowl. 122 When the light of the corona is analysed with a spectroscope, it is found to contain radiations which have not been observed in the laboratory. When they were first observed, and for many years afterwards, they were attributed to a hypothetical unknown element, which was named ‘coronium’. Modern atomic theory left no room for such an element. |