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unsung

HN member
Joined
Tue, Sep 29, 2015, 10:32 PM UTC
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16 items

About unsung

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Recent public activity

  1. comment
    Comment #38812795

    I can give a real example. At work we were testing pulse shaping amplifiers for Geiger Muller tubes. They take a pulse in, shape it to get a pulse with a height proportional to the…

  2. comment
    Comment #37803164

    A couple people had some great comments that should get you started; I'd just like to add that you don't need to do everything at once either and your workflow can be flexible. Whe…

  3. comment
    Comment #37729623

    There's a push these days to move towards HALEU fuel in the US; it's basically downblended submarine fuel stock [0]. It'll take about a decade to really start the downblending and …

  4. comment
    Comment #37682274

    Probably, but I would think you'd need to use a paste stencil to raise the PCB contacts evenly above the solder mask layer since it's not quite flush, or just get the board pre-tin…

  5. comment
    Comment #37357261

    The windings in isolation transformers are inductively coupled through the magnetic field in the core. There's often a shield between the two windings to reduce any capacitive coup…

  6. comment
    Comment #37008969

    Krane's Introductory Nuclear Physics is often considered a standard text, and includes a crash course in quantum that might be enough for someone comfortable with linear PDE's. You…

  7. comment
    Comment #33463011

    Have you tried panel mounting the antenna on a big (at least 4 sq ft) ground plane? We use these at work and had a very hard time until we started building nice big ground planes i…

  8. comment
    Comment #29470276

    You can sketch out your board in KiCad [0] and export it as a gerber that you can send to a printing service. CERN uses it now, so it's worth learning, as it'll only improve over t…

  9. comment
    Comment #29338755

    > Nuclear fusion happens spontaneously in nature. True, but you mean fission :)

  10. comment
    Comment #29196879

    > David Friedberg argued on the all in podcast that a 25 square-mile areal of these would be enough to capture all CO2 currently in the atmosphere. I felt like napkin mathing it, a…

  11. comment
    Comment #29062727

    I believe you would be correct on the first point, but have the second backwards. If V' was instead a chunk without the player, then res^V_V' Γ(V,F) = ∅, and the sections of sheave…

  12. comment
    Comment #29059041

    What a fantastic choice of analogy to convey how sheaves attach data to a base space. With so many "Category Theory for Programmers" tutorials floating around, it's refreshing to s…

  13. comment
    Comment #29055335

    On a technical note, the first point is not really true. Using atmospheric models like WRF get you pretty good irradiance forecasts that are roughly proportional to PV output. I (v…

  14. comment
    Comment #29055048

    I would strongly second the GP's recommendation. The book mentioned is aimed at math teachers up to an undergraduate level, but generalizes quite naturally. The idea is that one ma…

  15. comment
    Comment #20107011

    I'm also not sure where the GP is going with this first point. I myself have cloned potatoes with nothing but old Russets and a shovel, and do not consider it nefarious.

  16. comment
    Comment #18048622

    He was talking about some of the limits of just inferring that repeated behavior is induced ad infinitum. He talks about it more. [0] [0] www.personal.kent.edu/~rmuhamma/Philosophy…