Comments by "craxd1" (@craxd1) on "" video.
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The Europeans have a better name for an electron tube, and that is a valve. In fact, all tubes, from a diode to a pentode, act like valves. The diode acts like a check valve, and the triode to the pentode acts like a hand or pressure controlled valve, where the grid is the handle that opens or closes the valve when a voltage (pressure) is applied.
This was taught under “water theory,” which was what the US military taught at one time, to simplify electricity and electronics. As a matter of fact, Georg Ohm merely used the existing hydraulic equations for liquid pressure and flow, to create Ohm's Law, where he noticed that electricity flows like a liquid through a circuit. Pressure equals voltage, and current equals amperage. Both hydraulics and electricity encounters resistance in the flow, thus the third part of the equation.
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