Ask HN: What did you learn last month? (July 2026)

bbhu1st about 2 hours ago 4 comments

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What did you learn recently? What concept finally "clicked" for you?

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alok-g•about 1 hour ago

Quantum Mechanics (ongoing), Sturm-Lioville theory, Special Relativity (ongoing), Tensors (going towards General Relativity)

What finally clicked: Hermitian matrix, self-adjoint operators, quantum operators for energy and momentum, the Metric (for modeling spacetime curvature), etc.

maerF0x0•about 1 hour ago

I've been working on the course https://www.coursera.org/specializations/machine-learning-in... . No news to anyone on here, but new to me.

al_borland•about 1 hour ago

I used Python webview to make some little desktop utilities.

Most modern frameworks feel like they have so much bloat and overhead. I wanted to make some simple things is a simple way, and it seemed like a good solution for that.

WheelsAtLarge•about 2 hours ago

Current AI can hack servers better than most hackers.