Before revision: Triodes The fluidic triode, an amplification device that uses a fluid to convey the signal, have been invented, as have fluid diodes, a fluid oscillator and a variety of hydraulic "circuits," including one that has no electronic counterpart.
After revision: Triodes The fluidic triode, an amplification device that uses a fluid to convey the signal, has been invented, as have fluid diodes, a fluid oscillator and a variety of hydraulic "circuits," including one that has no electronic counterpart.