What Hugh was talking about is "drift velocity", the average velocity of electrons in a conductor. Although it's of interest to physicists and I suppose there are some engineering applications, it doesn't matter much to most of us. Lightning bolts, electrical signals and electrons shot out of the cathode of a cathode ray tube all travel at near-light speeds.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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