HackerTube.dev

World's Strongest Magnet!

Veritasium · 16.4M views · 2023-03-14 · 23:05

Open on YouTube ↗

If playback is restricted in your region, try opening the original video. Use Mark watched to add it to your marked videos.

Overview

Veritasium visits the National High Magnetic Field Laboratory to see the world's strongest magnets and demonstrate effects like eddy currents. It covers what intense magnetic fields do to materials and objects.

On Hacker News

Cited as a reference for magnet safety, eddy currents and superconductor levitation in physics threads.

Discussed on HN; no positive recommendation is recorded in this export · HN mentions 2023–2024

Topics

Search by tags

What people said

scotty79 · 2024-03 · Reference

Not really. Bullet would just orient itself to minimize eddy currents. People would start using thin disc shape bullets that would slide through the magnetic field without much trouble after orienting themselves in the best direction. [VIDEO]

Read the original HN comment ↗
JumpCrisscross · 2023-08 · Reference

> Not sure why this is getting such a negative response We're hackers. Newness is enticing. Complaining that you're "getting tired" of something because it's novel while asking for a TikTok summary is lazy. As another commenter mentioned, start with Wikipedia [1]. From there one sees apatites (think: hydroxyapetite or flurapetite on your teeth) [2]. Searching Google Scholar yields this paper about lead apatite [3][4]. We also see the Wikipedia article talk about diamagnetism; here is a summary video [5]. And here is a promising paper [6] from the Wikipedia entry on quantum wells [7]. I'm currently stuck here: I don't get quantum wells, and don't see--intuitively--how an apatite (or a misformed one) could produce them. In summary, asking for help is always welcome. Complaining about your ignorance and lack of motivation, seldom so. [1] [LINK] [2] [LINK] [3] [LINK] [4] [LINK] [5] [VIDEO] [6] [LINK] [7] [LINK]

Read the original HN comment ↗
Baeocystin · 2023-07 · Reference

Eddy currents can be induced in non-superconducting materials that make it look like levitation, but the catch is that there has to be relative motion between the magnet and the object 'levitating' to generate the currents in the first place. I've linked to a relevant example in a Veritasium video here: [VIDEO] But in this sample video, the standoff distance doesn't appear to be slowly dropping at all, which would rule out eddy currents as a source of the behavior. If you continue watching the linked video to 13:27, he talks about how and why superconductors levitate.

Read the original HN comment ↗

Sources

Video by Veritasium, played through YouTube.

Data and selection notes

HN summaries and labels may contain AI errors. HN dates refer to discussions, not video publication.

HN Library: HackerTube export (2026-10-31) and open-index/hacker-news. Upstream summaries and classifications may contain AI errors.

Views, duration and playback status refresh separately from the published catalog. When an update fails, existing data remains visible.

Selection checks
  • SaaS & AI candidates: Topic keywords do not match
  • Editor-approved picks: Editorial review is required

Rule matches identify candidates. They do not guarantee video quality or financial results.

About the library and its sources