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qume

HN member
Joined
Mon, Jan 12, 2015, 3:12 AM UTC
HN karma
693
Public activity
209 items

About qume

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Recent public activity

  1. comment
    Comment #18500082

    I think it depends on the context - if you're designing the whole system from bar code to camera, I'm not sure that the color will help. But in that case you can assume close to pe…

  2. comment
    Comment #18496226

    Cameras only see one colour per pixel (i.e. Bayer colour filter array). Because our eyes are not so acute at resolving colour compared to luminescence this tradeoff works well. But…

  3. comment
    Comment #18474079

    There is a real, if small, chance that there could be a general election in the UK soon and potentially a more favourable labour government. If I were Assange I would do whatever I…

  4. comment
    Comment #18280913

    Yup it did - I was flying aerial surveying at the time. Bad timing. Actually I didn't notice anything in the end so was all good but when I saw the NOTAM I couldn't believe my bad …

  5. comment
    Comment #18163630

    No I don't, my calculations at this stage are as follows: Sail area - same as my 10 ton boat. Gets me to 7kts in a good strong wind. Boat they intend to install it on: 110000 tons!…

  6. comment
    Comment #18163618

    I understand that, in fact probably uniquely to people on this thread I've been on a rotor sail boat (not sailing though, in dock). They do work when the ratio of the sail area to …

  7. comment
    Comment #18163593

    My back of the napkin assumed all energy from the wind over the entire cross sectional area. Magnus effect or not, i'm just dealing in orders of magnitude and for the average wind …

  8. comment
    Comment #18162370

    I really want this to be a thing, but my rough calculations given the total cross section area of the sail and the average wind conditions on shipping routes come out to as close t…

  9. comment
    Comment #18158174

    I build camera gear for 172s and fly (as passenger, not pilot) probably 20-30 days per year, sometimes much more, and I get nervous at 40kts IAS is I guess around the full flaps st…

  10. comment
    Comment #18127854

    Very thought provoking. I'd like to add that this could be the case 'subconsciously' without him realizing or rationalizing it to himself.

  11. comment
    Comment #17887413

    My small 12 meter long boat has a sail area of 900sqft. When sailing perpendicular to the wind it captures pretty much all of that. The sail on that ship is 100' high, and looking …

  12. comment
    Comment #17870957

    Wow that was downvoted. I guess these people aren't aware of Nimoys extensive practical jokes with Shatner. But even so, why would anyone downvote this?

  13. comment
    Comment #17803354

    Yea flight avionics, sort of. Aerial camera systems and the UI to control them.

  14. comment
    Comment #17798409

    Wow this covers a lot of my job, and is really concise and well written. This might be the best link ever posted to HN for me. Thank you.

  15. comment
    Comment #17738914

    Thank you, excellent points amd compelling argument. My point however remains - 99.999999% pure makes 100.000% sense. Ultra pure does not.

  16. comment
    Comment #17738835

    I apologize if you found my post uninteresting. You must downvote a lot.

  17. comment
    Comment #17738718

    The article isn't the canonical source of the meaning of the word pure. And yes, the word pure _literally_ means 100% My point was that the author has misused the word pure. Which …

  18. comment
    Comment #17738714

    I didn't realise the word pure was context sensitive. OED doesn't either, perhaps you could contact them and help them update their definition: https://en.oxforddictionaries.com/de…

  19. comment
    Comment #17738616

    Hey respected downvoters - pure means homogeneous. Can you please explain to be what ultra homogeneous means? When discussing scientific concepts being haphazard with language seem…

  20. comment
    Comment #17738463

    If pure silicon is 100% silicon atoms by definition, what is ultra pure silicon? 101%? Cool!

  21. comment
    Comment #17713732

    Wow 250kmh. May as well be limited to C like the rest of the world's auto makers at that speed

  22. comment
    Comment #17696275

    My god how dare you come here with your 'sense of humor'. Please be more sensitive to those around you less abled.

  23. comment
    Comment #17685298

    I used MacOS for years and loved it. But now have been on linux (on both Mac and a X220) exclusively for a few years and I'm honestly confused as to why a developer in this communi…

  24. comment
    Comment #17660108

    Why is the meat so much bigger given its only twice the weight?

  25. comment
    Comment #17529009

    Similar experience here. After years of evangelizing airbnb I got shit on by them by some low level employee with no way to continue communication, even though their misunderstandi…