If you’ve ever searched “hack for…”, you know the internet is stuffed with shortcuts, some sketchy, some genius. The real ...

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A solenoid engine is a curiosity of the electrical world. By all measures, using electricity to rotate something can be done almost any other way with greater efficiency and less hassle. But there’s ...

Most any rocket engine you’d find on a spacecraft – save for solid or hybrid rockets – use an engine system that’s fairly complex. Because of the intense heat, the fuel is circulated around the ...