1 Explanation of how kilowatt-hour meters work (electromechanical)
An explanation of how the mechanical kilowatt hour meter on a house works, recommended as a clear way to study the spinning disc and its magnets.
Topic
how it works
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2 Coffee Maker: Pumping water with almost no moving parts
Explainer on how a cheap coffee maker moves water using only its heating element; cited to settle questions about how it pumps.
