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Cake day: February 1st, 2024

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  • qjkxbmwvz@startrek.website
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    toScience Memes@mander.xyzBoss Mode
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    6 days ago

    No, that’s not really a useful way of modeling it for the case of light traveling through a linear medium.

    The absorption/re-emission model implicitly localizes the photons, which is problematic — think about it in an uncertainty principle (or diffraction limit) picture: it implies that the momentum is highly uncertain, which means that the light would get absorbed but re-emitted in every direction, which doesn’t happen. So instead you can make arguments about it being a delocalized photon and being absorbed and re-emitted coherently across the material, but this isn’t really the same thing as the “ping pong balls stopping and starting again” model.

    Another problem is to ask why the light doesn’t change color in a (linear) medium — because if it’s getting absorbed and re-emitted, and is not hitting a nice absorption line, why wouldn’t it change energy by exchanging with the environment/other degrees of freedom? (The answer is it does do this — it’s called Raman scattering, but that is generally a very weak effect.)

    The absorption/emission picture does work for things like fluorescence. But Maxwell’s equations, the Schrödinger equation, QED — these are wave equations.








  • The amount of money you save (and invest) isn’t accurately depicted with this though. Living expenses don’t necessarily grow with take home, if you keep lifestyle creep to a minimum.

    So what this means is that if you make $100k and save $10k/year, if you start making $200k you can save the same $10k/year, plus the entire additional $100k after taxes (let’s just say that’s $50k+). So you doubled your salary but your savings went up 6x+.


  • qjkxbmwvz@startrek.website
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    to196@lemmy.blahaj.zoneglow rule
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    16 days ago

    “Chain migration” is how many people — myself included — get jobs.

    I went to a very good school, and while I like to think the quality of education is what makes a school “good,” let’s be honest — the value is largely in your connections. Friend lands a good job, recommends you when there’s an opening, and bam, you’re already at the top of the pile of the CVs (better yet, they’re the hiring manager).

    Friends from school — peers and mentors alike — are a great place to start, if you can. Ask to grab a coffee and chat about their career, and be clear that you’re in the market. Most people are happy to chat (at the very least, it’s flattering).

    It’s the way the world works…






  • good enough simulations that you can’t tell the difference.

    This requires us having actual conversations with those dead people to compare against, which we obviously can’t do.

    There is simply not enough information to train a model on of a dead person to create a comprehensive model of how they would respond in arbitrary conversations. You may be able to train with some depth in their field of expertise, but the whole point is to talk about things which they have no experience with, or at least, things which weren’t known then.

    So sure, maybe we get a model that makes you think you’re talking to them, but that’s no different than just having a dream or an acid trip where you’re chatting with Einstein.





  • I think there are examples of projects getting criticized for not recreating the corposhit. Take GIMP — sure some folks really like it, but there are huge swaths of people who basically just say, “why doesn’t it work like Photoshop?!” and get very frustrated with its different approach.

    Personally, I like Google Photos — the interface, not the product — so when Immich came along and basically cloned it, I was really happy (I think Immich is fantastic, and at this point calling it a Photos clone is kinda offensive tbh — it’s way cool).

    Some corposhit just sucks, yeah, but some is actually well thought out — no shame in taking the concept and running with it, IMHO.