Comment on xkcd #3115: Unsolved Physics Problems

Successful_Try543@feddit.org ⁨2⁩ ⁨days⁩ ago

• BartyDeCanter@lemmy.sdf.org ⁨2⁩ ⁨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.

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  • Successful_Try543@feddit.org ⁨2⁩ ⁨days⁩ ago

    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

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    • Lemminary@lemmy.world ⁨1⁩ ⁨day⁩ ago

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

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• cmgvd3lw@discuss.tchncs.de ⁨2⁩ ⁨days⁩ ago

  Did he found a cure for baldness?

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  • Successful_Try543@feddit.org ⁨2⁩ ⁨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.

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    • mojofrododojo@lemmy.world ⁨1⁩ ⁨day⁩ ago

      shaving is gonna be an adventure

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  • Honytawk@feddit.nl ⁨2⁩ ⁨days⁩ ago

    No, but those zinc ingots now have great mustaches!

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  • elucubra@sopuli.xyz ⁨1⁩ ⁨day⁩ ago

    There is no cure for baldness, else Bezos would have a mane.

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    • markovs_gun@lemmy.world ⁨1⁩ ⁨day⁩ ago

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

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      • bstix@feddit.dk ⁨1⁩ ⁨day⁩ 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.

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