University lectures & courseslecture
How to Speak
MIT OpenCourseWare
Documented HN sourceHN 21.0
Quick Take
HN treats it as the canonical, near-universally recommended lecture on giving talks and presentations.
Electronics & circuit design
AT&T Archives: Similiarities of Wave Behavior (Bonus Edition)
AT&T Tech Channel · Discussed on HN from 2014 to 2026
Topics and ideas
- 01wave machine
- 02standing waves
- 03impedance matching
A Bell Labs film in which Dr. J.N. Shive uses a mechanical wave machine to demonstrate reflection, standing waves, resonance and impedance matching. He includes some equations but relies mostly on real-world examples a layperson can follow.
Read the notesSource context
Documented HN source
Made waves finally understandable through visual demos
“I didn't really understand waves until I saw”Read the original HN comment
kaoD · 2014-11 · 12 recommenders across 15 months
Keep exploring
Machine learning & deep learninglecture
Documented HN sourceHN 21.0
Quick Take
HN treats it as the best starting point for really understanding backprop and neural nets, because Karpathy explains the why with intuition and builds everything in code.
University lectures & courseslecture
Documented HN sourceHN 19.0
Quick Take
One of the most consistently recommended lecture series on HN, praised as fascinating, funny and eye-opening about human behavior across many scales.