this post was submitted on 19 Apr 2025
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Source is YouTube and Institute of Chemistry and Chemical Technology SB RAS (PDF). If you have 2 kilowatts, a coil of copper pipe, and a lot of guts, you too could melt aluminum with induction heating while it's levitating.

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[–] guy@piefed.social 18 points 1 month ago (7 children)

I always thought it fell when it got so hot that it lost its magnetism I'm sure I have read that metals do that at too high temperatures

[–] SARGE@startrek.website 6 points 1 month ago* (last edited 1 month ago) (2 children)

Indeed.

Despite my own work in making knives and other blacksmithing things, where I LITERALLY have a magnet on my anvil so I can test for when the steel hits it's austenitic temp, I somehow managed to forget the iron will go non magnetic...

So yeah. Thanks for the reminder!

In my defense I haven't made any knives since moving a year ago...

However, this is aluminum I think? I'm not entirely sure how magnetism works with lenzs law and if there's a temperature it stops working...

[–] disguy_ovahea@lemmy.world 9 points 1 month ago (1 children)

It’s a handy principle. That’s how rice cookers work. Once the water has been soaked into the rice and the rest has evaporated, the metal insert will increase in temperature until the magnet no longer holds it down.

[–] JizzmasterD@lemmy.ca 3 points 1 month ago

Ha! I always wondered how that worked! Lemmy comment section for the win!

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