| 释义 |
mysterium Astr.|mɪˈstɪərɪəm|
[f. mysterious a. + -ium.]
A hypothetical substance to which a galactic radio emission at 1665 megahertz was attributed until it was identified as an exceptionally strong component of a set of four lines emitted by the hydroxyl radical.
1965H. Weaver et al. in Nature 2 Oct. 30/1 There is no known identification of the strong emission line at 1,665 Mc/s... We shall speak of this unidentified line as arising from ‘mysterium’. Ibid. 30/2 Our observations indicate that ‘mysterium’ is found in strong H II regions, but not in all strong H II regions. 1967Science 25 Aug. 885/1 Mysterium has now been identified as OH. 1974G. L. Verschuur Invisible Universe ix. 77 How do we now know that the mysterium signals are in fact OH lines? |