[ProtoAES256]

He repeatedly stated that the sample stands up(become straight) when the object is nearing it, and drop down when its far. The same applies for the negative polarity(same behaviour on N/S). Source: Native Mandarin speaker.

[yorwba]

Did you understand what he said when he explained what kind of magnet he used? Different versions produced by targum claim either "aluminum shed magnet" https://targum.video/v/2023/8/1/e2ad3b8e86961ccfdcf411d2d4d1... or "cast iron shed magnet" https://targum.video/v/2023/8/1/2534a4408ccce9c13a811e94f16d...

[ProtoAES256]

钕铁硼磁铁，Neodymium magnet

Slight chance that might be wrong, their northern accent is too strong.

[yorwba]

Thanks, that makes sense from context. It sounded to me like the first syllable was rú, which got me wondering whether 铷 rubidium magnets are a thing... I found a patent for a "rubidium iron boron permanent magnet" https://patents.google.com/patent/CN102832038A/en but I guess that 铷铁硼 is a typo for 钕铁硼.