thermionn.
/ˈθəːmɪən/, /ˈθəːmɪɒn/, U.S. /ˈθərmˌaɪən/ Physics.
An electron or ion emitted from an incandescent surface.
ΘΚΠ
the world > matter > physics > atomic physics > ion > [noun]
submolecule1834
thermion1909
ion1927
the world > matter > physics > electromagnetic radiation > electronics > electronic phenomena > [noun] > electron > emitted from incandescent surface
thermion1909
1909 O. W. Richardson in London, Edinb. & Dublin Philos. Mag. 6th Ser. 17 814 The substantive Thermionics furnishes naturally the further substantive Thermion.
1922 J. Mills Within Atom vii. 73 An electron which is emitted in this way is sometimes called a ‘thermion’.
1973 H. A. Enge et al. Introd. Atomic Physics iii. 81 In 1899, J. J. Thomson showed that the thermions in this effect are electrons.
This entry has not yet been fully updated (first published 1933; most recently modified version published online March 2022).
<
n.1909- fast ship
- fast shot
- fast sleeper
- fast store
- fast talk
- fast talker
- fast talking
- fast time
- fast timer
- fast to
- fast track
- fast track authority
- fast train
- fast upon
- fast wall
- fast week
- fast worker
- fast-access store
- fast-acting
- fast-anchored
- fast-approaching
- fast-attack
- fast-attack boat
- fast-attack ship
- fast-attack vehicle