Quote:
Originally Posted by Chris K
Think of sawing a board with a hand saw. The net movement in the saw's reciprocation is zero but the work and its movement is down through the board. Now I don't know if that's a ubiquitous explanation of AC in the EE world but it was a revelation for me!
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Another good AC analogy is a steam locomotive. The force-driven reciprocation of the driving rods translates directly to forward propulsion of the whole machine down the track.