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xkcd bot@lemmy.worldB to xkcd@lemmy.worldEnglish · 3 days ago

xkcd #3115: Unsolved Physics Problems

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xkcd #3115: Unsolved Physics Problems

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xkcd bot@lemmy.worldB to xkcd@lemmy.worldEnglish · 3 days ago
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xkcd #3115: Unsolved Physics Problems

Title text:

‘Tin pest’ makes more sense to me. Tin just doesn’t want to be locked down in a shape like that. I get it. But why would any metal want to grow hair??

Transcript:

Transcript will show once it’s been added to explainxkcd.com

Source: https://xkcd.com/3115/

explainxkcd for #3115

  • Successful_Try543@feddit.org
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    3 days ago

    A colleague of me did his PhD exactly on the last topic.

    • BartyDeCanter@lemmy.sdf.org
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      3 days ago

      And does he know why? I’ve had to deal with it too often and it would be really nice to be able to expand RoHS to aerospace.

      • Successful_Try543@feddit.org
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        Deep in the coating, where the Cu6Sn5 [Remark: intermetallic phase of Sn coating and Cu substrate] is present, the deviatoric strain was high. This indicates that the growth of the intermetallic phase causes plastic deformation of the tin coating.
        […]
        A short (4 micrometre) radial gradient in hydrostatic stress was observed around the root of the whisker. This gradient together with long-range diffusion from specific regions could provide the driving force for whisker growth.

        https://portal.research.lu.se/en/publications/tin-whiskers-experiments-and-modelling

        • Lemminary@lemmy.world
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          2 days ago

          Oh, but of course! The deviatoric strain, yes.

    • cmgvd3lw@discuss.tchncs.de
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      3 days ago

      Did he found a cure for baldness?

      • Successful_Try543@feddit.org
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        3 days ago

        Well, if you are willing to coat your head with copper and some tin on top, you can grow yourself some tin whiskers. Yet, I don’t know if they make a good replacement for hair.

        • mojofrododojo@lemmy.world
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          2 days ago

          shaving is gonna be an adventure

      • elucubra@sopuli.xyz
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        There is no cure for baldness, else Bezos would have a mane.

        • markovs_gun@lemmy.world
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          2 days ago

          Elon has hair plugs that admittedly look pretty good. I think Bezoa just lost his hair too quickly to fool anyone.

          • bstix@feddit.dk
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            2 days ago

            hair plugs that admittedly look pretty good.

            Nah, it also doesn’t fool anyone. it looks like a toupee, except that he can’t take it off.

            • morphballganon@lemmy.world
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              2 days ago

              It looks better than his natural hair did

      • Honytawk@feddit.nl
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        3 days ago

        No, but those zinc ingots now have great mustaches!

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