| 释义 |
thermion Physics.|ˈθɜːmɪɒn|
[f. thermo- + ion.]
An electron or ion emitted from an incandescent surface.
1909O. W. Richardson in Phil. Mag. XVII. 814 The substantive Thermionics furnishes naturally the further substantive Thermion. 1922J. Mills Within Atom vii. 73 An electron which is emitted in this way is sometimes called a ‘thermion’. 1973H. A. Enge Introd. Atomic Physics iii. 81 In 1899, J. J. Thomson showed that the thermions in this effect are electrons. |