Also found in: Encyclopedia, Wikipedia.
The production of microwave oscillations when a constant voltage in excess of a critical level is applied to opposite faces of a semiconductor.
[After John Battiscombe Gunn (1928-2008), Egyptian-born British physicist.]
(General Physics) a phenomenon observed in some semiconductors in which a steady electric field of magnitude greater than a threshold value generates electrical oscillations with microwave frequencies
[C20: named after John Battiscombe Gunn (1928–2008), British physicist]