The symptom signInWithRedirect would fire fine — the Google popup flow completed, the redirect came back, and then... nothing. auth.currentUser was null. No error in the console. No failed network request. The user object had just vanished somewhere...

The problem with "circuit simulators" on the web Most browser-based circuit tools either fake it animate current flow without real math or wrap an existing SPICE engine. I wanted to actually implement the math myself — a Modified Nodal Analysis MNA ...

If you have ever popped the back off anything with a circuit board inside, you have seen resistors. They are the little striped cylinders, the tiny black rectangles, the ceramic blocks bolted to a heatsink. They are everywhere, and most of them look ...