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Richard Feynman Magnets

nebulajr · 999.7K views · 2009-04-15 · 7:33

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Overview

A short clip of Richard Feynman answering an interviewer's question about how magnets work, in which he explains why a why-question has no simple answer without a shared frame of reference.

On Hacker News

HN returns to it constantly as a classic on the difficulty of explaining fundamentals and the limits of analogies.

Recommended by 4 HN people across 3 months · HN mentions 2014–2026

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What people said

aunty_helen · 2020-07 · Strong recommendation

[VIDEO] Richard Feynman explaining magnets is one of the best layman explainers I've seen (in between the ranting). I honestly didn't understand why magnets worked and found this on a late night youtube binge. (But don't search youtube for anything related to magnets, you end up amongst the perpetual motion nuts) Edit: Just to be clear with this video (it had been a while since I last watched it), he doesn't 'explain' magnets as much as he hints at the concepts involved. I already knew about the spins being lined up etc but it was the "you can't put your hand through the chair" comment that gave me the eureka moment.

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ramraj07 · 2025-04 · Recommendation

I don't know if just going to nature is sufficient to get fascinated with biology. In my opinion it takes a fundamental reset in how you think about anything you see. Humans while smart have obviously had to learn to "ignore" thinking about how things work. You don't think too hard about how anything works really. I mean at a cursory level sure, but by vastly different interpretations of the word "cursory", you can change your thirst to know how things you see work at more and more fundamental levels. You don't need to go into nature to get this curiosity except for the possibility that it makes you more meditative. You can look at your arm and think what the hell happens in there at a molecular level to make you move the muscles. Or when someone says nerves conduct electricity what the hell does that mean? I revisit this feynman video of him explaining (or not) magnets every few months and I think it's relevant to this question. [VIDEO] When I think like that I'm just curious why OP and others blame teachers or whoever else for not inducting the curiosity in them. Like it's someone else's job to make you curious? In my opinion you're either born that way or you're not. Some airport store book isn't gonna make you the next whatever scientist you adulate.

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rimunroe · 2020-07 · Recommendation

I appreciate it. You're absolutely right about how exciting it is to be able to share explanations with people. This is a video of Feynman's answer to an interviewer asking about what and why you feel something when you put two magnets together [VIDEO] . It's a great description of the problems inherent to explaining this sort of thing to people. (Also, if anyone knows a video/essay/talk along these lines by a less sexist person, I'd love a link.)

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Sources

Video by nebulajr, played through YouTube.

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