His resonator was called a " rhumbatron " by the Varian brothers.
2.
Their role has since been taken over by solid state devices like the Gunn diode, which started to become available in the 1970s . " Rhumbatron " refers to the resonant cavity design that was part of many klystrons, referring to the rhumba because of the dance-like motion of the electrons.
मोबाइल