Principle Equivalents
- EM wave speed (velocity of propagation)
- Speed of sound in water. When a light switch is flipped, the electric wave travels very quickly through the wires.
- Charge flow speed (drift velocity)
- Particle speed of water. The moving charges themselves move rather slowly.
- DC
- Constant flow of water in a circuit of pipe
- Low frequency AC
- Water oscillating back and forth in a pipe
- Higher-frequency AC and transmission lines
- Sound being transmitted through the water pipes: Be aware that this does not properly mirror the cyclical reversal of alternating electric current. As described, the fluid flow conveys pressure fluctations, but fluids *do not* reverse at high rates in hydraulic systems, which the above "low frequency" entry does accurately describe. A better concept (if sound waves are to be the phenomenon) is that of direct current with high-frequency "ripple" superimposed.
- Inductive spark
- Used in induction coils, similar to water hammer, caused by the inertia of water
- Static electricity
- Moisture from condensation.
See also Bond graph.
Read more about this topic: Hydraulic Analogy
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