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Viewing profile — deepnotderp

deepnotderp

HN member
Joined
Thu, Nov 03, 2016, 2:55 PM UTC
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4,517
Public activity
2,002 items

About deepnotderp

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Recent public activity

  1. comment
    Comment #46449188

    > t also required just the right combination of natural resources (coal) and economic conditionsL deforestation This argument is repeated often, but I don't think it's really true.…

  2. comment
    Comment #45662281

    It’s difficult to cmp diamond is the issue I’d assume

  3. comment
    Comment #45587801

    Yay for fracking! Yay for natural gas!

  4. comment
    Comment #45454191

    New hardware could greatly reduce inference and training costs and solve that issue

  5. comment
    Comment #45194832

    Yes but one of the reasons that coal is being replaced by gas is because of the capex of the steam turbine

  6. comment
    Comment #45189169

    Oh my bad, you’re right Re: Nat gas, agreed, it’s not solar though, storage is much more expensive Thermal energy still needs to drive a turbine to generate electricity

  7. comment
    Comment #45189146

    Sure, but conventional DRAM endurance is 10^15 or more

  8. comment
    Comment #45186566

    $3/GJ is $108/MWH which any large scale fission buildout would easily beat for thermal energy costs

  9. comment
    Comment #45186271

    10^11 cycles is not “practically unlimited endurance”, that’s less than a second of use at 1 GHz

  10. comment
    Comment #45177513

    Thermal storage has very poor discharge rates unfortunately (usually slower than a day), as well as surprisingly high cost once you factor in inefficiencies and turbine cost

  11. comment
    Comment #45079728

    MCF has a bunch of challenges, eg no good pigtail connector, need for rotational alignment, inability to radix (MCF is great for point to point, less good if you want to fan out fr…

  12. comment
    Comment #45016404

    They do have higher energy density, it’s just a low power density

  13. comment
    Comment #44637319

    This is a lot of words to say “solar + battery lcoe is $70/MWH and gas is $40/MWH, but most places outside the U.S. don’t have access to tons of cheap gas so it’s more expensive th…

  14. comment
    Comment #44459840

    FEC latency is >> propagation delays at these distances, so that's probably the dominant factor in most cases

  15. comment
    Comment #43584902

    Hyperspectral camera?

  16. comment
    Comment #42533241

    We need to move zoning to the federal level like Japan We must decide whether we’ll be a civilization that bows to NIMBYism and stays stuck in squalor or allow building the future.…

  17. comment
    Comment #42503971

    Once again nonsense, productivity has been increasing in America over the last 20 years but real wages have not. As always, don’t confuse textbook theory with real life!

  18. comment
    Comment #42503958

    Nonsense. “Free trade” here refers to inter-country globalized trade across borders, not free markets within a confine. There’s a much stronger case to be made that industrial poli…

  19. comment
    Comment #42248195

    You can actually make curved dies already- there’s a company doing that for image sensors, if you thin silicon down it becomes flexible

  20. comment
    Comment #42241755

    No, there’s a class system for laser safety The rating is for you to stick your eyes right up to it for a long period of time and still be fine

  21. comment
    Comment #42241722

    The SNR for flash Lidar is really low because you spread the beam out over such a large area. Most automotive Lidar already operate in a “photon starved regime”, ~200-300 photons p…

  22. comment
    Comment #42207245

    I enjoy how people are dunking on this by saying “omg this is what happens when engineers dare to have thoughts on other topics” when this is very similar to the theory for CBT in …

  23. comment
    Comment #42153521

    Nah, nat gas is cheaper The problem is that not all parts of the world have access to cheap nat gas

  24. story
  25. comment
    Comment #41897328

    There are new dielectric refrigerants that aren’t as polluting, but they’re more expensive