December 29, 2025
Index cards, internet wars
Feynman's Hughes Lectures: 950 pages of notes
A 950-page time capsule drops; fans swoon, contrarians shout 'read Purcell'
TLDR: A 950-page trove of personal notes from Feynman’s 1966–71 Hughes lectures surfaced. Fans call it a rare window into his mind while skeptics ask why the hype eclipses classics like Purcell; the index-card legend and no-recordings mystique have the thread split—and everyone clicking
Richard Feynman’s Hughes Aircraft lectures just landed online as a massive 950-page bundle of personal notes—no recordings, just one attendee’s meticulous memory from 1966–71. It’s a time capsule of the physicist riffing off a few 3×5 cards on everything from space stuff (cosmology, “black stars” aka black holes) to relativity and quantum, even QED (quantum electrodynamics—the math of light and particles). Volume 1 was later sprinkled with modern discoveries, and there’s talk of moving the notes to a living, editable platform for the nerds to pile on. The community? Absolutely buzzing. One camp is starstruck: “best HN post of 2025,” says a fan, while another marvels at the sheer grind—almost a thousand pages for lectures that weren’t even his core research. But the contrarians roll in fast: “I never got the Feynman hype,” counters a skeptic, waving the flag for overlooked classics like Purcell’s Electricity and Magnetism. Cue the memes: “Three index cards > two-hour TED Talk,” jokes one, and another calls the SU(2)/SU(3) stuff “wizard spells.” It’s equal parts love letter and eye-roll, with everyone agreeing on one thing: the legend of the index cards, and the no-recordings mystique, makes this drop irresistibly clicky
Key Points
- •The notes document Feynman’s lectures from 1966–1971 in three volumes totaling about 950 pages.
- •Volume 1 (224 pages) covers astronomy, astrophysics, cosmology, black holes, and general relativity, with topic input from Hughes Labs.
- •Volume 2 (209 pages) revisits relativity, electrostatics, electrodynamics, and matter‑wave interaction, tailored for advanced audiences to prepare for QED.
- •Volume 3 (314 pages) addresses quantum mechanics, scattering theory, angular momentum, Lie groups (SU(2), SU(3)), QED, and pair production, including Feynman diagrams.
- •The notes are personal reconstructions without recordings; some modern content was added and there is intent to move them to a dynamic editable platform.