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Engineer turns disposable vape pen into a working web server
(interestingengineering.com)
This is a most excellent place for technology news and articles.
You're right! Sometimes we let the kinetic energy of the liquid water itself spin the turbine, when we're feeling freaky.
all of these, and gas turbines too, are synchronous. some wind turbines are almost-synchronous and some use giant inverters which is probably one of bigger mass uses of power electronics today