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User: the_other_chewey

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  1. Re:What are they displaying this on? on Big Buck Bunny In 4K, 60 Fps and 3D-stereo · · Score: 1

    Each stereo pair is shown twice, alternating between left and right.

    Aren't the left/right frames projected at the same time?

    The "shutter glasses" way of doing stereoscopic projection needs
    temporal separation, otherwise the shutters would be useless.

    But even with systems using (circular) polarisation, that would
    require two completely independent projection paths, which basically means
    two projectors. That would be much too expensive, so: No.

  2. Re:Classic... on Kdenlive Developer Jean-Baptiste Mardelle Has Been Found · · Score: 1

    ...Linux would have been an over engineered cluster fsck.

    Then let's be grateful Linux is a full OS kernel and not just its storage subsystem.

  3. Re:What are they displaying this on? on Big Buck Bunny In 4K, 60 Fps and 3D-stereo · · Score: 4, Informative

    Is this full 3D at 60fps, or is this the 4K equivalent of HRF3D like the Hobbit which will simply show 30fps to each eye alternating?

    The Hobbit is 48 frames per second per eye, and is projected "double flashed":
    Each stereo pair is shown twice, alternating between left and right.
    So the projector is actually projecting 192 images per second.

    Standard 24Hz stereoscopic content by the way is projected triple flashed, resulting
    in 144 images per second.

    Nice amount of in-depth detail here:
    http://www.avnetwork.com/latest/0013/hfrbehind-the-scenes-of-a-major-video-projection-rollout/91486

  4. Re:i'm all for it... on Ford Engineers Test 'Predictive Logic' To Improve Cruise Control · · Score: 2

    Much more dangerous is, by slow overtaking you're prolonging the time spent in the blind spot of the overtaken car, which is why for instance German law forbids overtaking with less than 20 km/h difference in velocity.

    There is no such law.

    The wording in the law (article 5 StVO) translates as "considerably faster". No numbers.

  5. Re:They didn't pack a 3D printer? on Rough Roving: Curiosity's Wheel Damage 'Accelerated' · · Score: 1

    The rover masses 1000kg so there is 50kg of force on every wheel.

    Where does it hide the other 14 wheels?

  6. Re:Time to call in... on Enormous Tunneling Machine 'Bertha' Blocked By 'The Object' · · Score: 1

    ...The SCP Foundation.

    First reaction: "OK, what am I not getting here?
    What does this have to do with a command line tool?
    Why is this modded funny?"

    And then google found me the foundation's website.
    That stuff is all kinds of awesome, and I had no idea it existed. Thank you!

  7. Re:nothing of any us to us on moon on How To Avoid a Scramble For the Moon and Its Resources · · Score: 5, Informative

    What are the resources there?

    1. Silicon

    2nd most abundant element in Earth's crust

    2. Oxygen

    Most abundant element in Earth's crust

    3. Aluminum

    3rd most abundant element in Earth's crust

    4. Iron

    4th most abundant element in Earth's crust

    5. Magnesium

    In the top 10 of the most abundant elements in Earth's crust.

    6. Water ice (in craters near the poles)

    Oceans

    7. Helium 3

    10s of ppb only, and just on the surface (solar wind doesn't really penetrate).
    Also, it's useless as an energy source compared to everything else:
    If we are at a technological level capable of building a fusion plant for He3,
    we can build one for hydrogen for much less. And thus, again, Oceans.

    8. Titanium

    In the top 10 of the most abundant elements in Earth's crust.

    9. Lots of trace minerals

    In traces very similar to those on Earth, given the common history.

    10. Solar energy

    Deserts.


    So unless the idea is to produce stuff that goes further out and not back to Earth,
    mining the Moon is just an insanely difficult way to get resources we have plenty
    of down here.

    Admittedly, building an actual production economy for space exploration would be
    a great idea, and I'm all for it. Waiting for humanity to get the technical capability (to say
    nothing of the will) to do so might still take a while though. We're far from being there.

  8. Yes, actually on Ask Slashdot: Can Digital Music Replace Most Instrumental Musicians? · · Score: 4, Interesting

    As TFA an incredible amount of orchestral music in movies, TV shows, ads etc.
    already is made from 100% samples, and nobody notices (or cares).

    An at the time seemingly crazy person over a decade ago started the
    Vienna Symphonic Library, a project to sample all possible
    sounds all instruments can make. A completely insane idea. Today, it's
    the undisputed market leader everyone uses...
    (make your own google analogy here)

    Will high-culture live-performance symphonic orchestras be replaced by
    sample computers any time soon? Most likely not. But that's a couple of
    thousand musicians in the world. Most on-staff "working class" instrumentalists
    are replaceable by a computer and a skilled person operating it today.

    The situation seems to be a bit like the animation revolution, when Pixar's
    Renderman (and others) turned hand-drawn animation into a bit of a niche thing.

    The big difference: The demand for animators probably has even increased
    over the last decade (admittedly, with in part a different skillset, but animators
    are animators first and not defined by the tools they use to animate) - but there
    were no "pencil operators" following an "animation conductor" in animation compared
    to "instrument operators" and... well... conductors in a traditional symphonic orchestra.

    Using the VSL samples, one person with a machine can indeed replace a whole
    orchestra for all but the most high-profile uses. And it is already happening.

    Also, the world will not end. "Nobody's dancing"? Have they seen the audience at a
    Daft Punk performance?

  9. Re:Was it advertised as free? on Thousands of Germans Threatened With €250 Fines For Streaming Porn · · Score: 5, Interesting

    I don't know about Germany, but it some european countries, just downloading something isn't illegal.

    It isn't illegal in Germany as well. Pretty much all lawyers except the ones sending the letters
    think those letters to be a hilarious. They all advise to ignore the letters and wait to be taken to
    court (which almost certainly will never happen).
    Sadly, it will probably scare enough people into paying to nonetheless be profitable.

    Personally, I'm wondering how this law firm got the contact addresses.

    Well-informed speculation is that they used ad tracking on redtube to get IP addresses (external
    ad servers see the request IP and the referer string...).

    Then they tricked the courts into assuming distribution on behalf of said IP to get a court order for
    the client's identity. I'm not exaggerating: The court filings very carefully avoid the word "streaming"
    and imply downloading and P2P distribution without actually saying so.

    Only about two thirds of the courts actually fell for it, but each one was good for thousands of identities.

  10. Re:Upon her shoulders*... on Google Doodle Remembers Computing Pioneer Grace Hopper · · Score: 2

    this is in no way to diminish the other pioneers in the field - Touring, von Newman, von Lovelace, etc...

    Not to forget Tsu Se, Arbol de Trigo, and l'Oison.

    [hint: Turing, von Neumann, Lovelace-without-von (although an optional "of")]

  11. Re:hmmm... on Thieves Who Stole Cobalt-60 Will Soon Be Dead · · Score: 5, Informative

    Here you go: The Goiânia accident.

    It wasn't an X-ray machine though, but a device for radiotherapy.
    Fortunately, X-ray machines are harmless when powered down.

  12. Re:isn't it possible to detect on Thieves Who Stole Cobalt-60 Will Soon Be Dead · · Score: 1

    The L3 band doesn't detect anything (how would that work?).

    GPS satellites carry optical sensors looking for the very characteristic
    flash of a nuclear explosion. There is no such thing as "radiation detection
    from space" (except, of course, if you are looking for cosmic rays).

  13. Re:Why not quantum entanglement? on How Microwave Transmission Is Linking Financial Centers At Near-Light Speed · · Score: 1

    Why don't they use quantum entanglement to transmit information in real-time? The bandwidth needed is minimal, for a real-time ticker you really only need a few details, such as price and volume. If you figure 256 bits (32 bytes) per transmit, you could track anything you want in real-time down to the millisecond for 32 KB/s. I'd imagine this is achievable using quantum entanglement?

    No.

    Quantum entanglement doesn't work that way: Information transmission via the channel you
    imagine is impossible (at least as far as we understand physics today). Yes, measuring the
    state of an entangled quantum object instantly determines the state of its remote counterpart.
    No, you can't use that to transmit information faster than light.

    Because:
    The measurement you end up with is random. There is no way to force the state to be one
    of the two possibilities, and therefore you have no influence over the state of the remote object.
    You randomly send either a 1 or a 0. Not too useful.


    And you can't save it by using "just look if the state has been determined" as the data channel:

    • – There's no way of knowing that without measuring.
    • – Even then, you don't know if what you measure has been determined by a prior
      remote measurement on the other object, or if you just turned the channel around.

    All those "quantum channels" in cryptography etc. always need another channel transmitting
    (meta)data to actually do something useful. This of course makes the whole transmission process
    slower-than-light.

  14. Re:Question on Scientists Forced To Reexamine Theories In Light of Massive Gamma-Ray Burst · · Score: 3, Informative

    At least, that's my best understanding of it. I'm sure several people will tell me how horribly wrong I am. I already know it's horribly simplified.

    I am a physicist, and no: As simplified explanations go, yours is a pretty good one.

  15. You do realize that burning gasoline in your car engine doesn't change the mass of anything, right? That the mass of gas burned + mass of intake air = mass of exhaust?

    ... = mass of exhaust + mass equivalent of energy released

    That's tiny in the case of gasoline in a car, but far from negligible for the sun:
    The sun loses about four million tons per second this way.
    (Although, in relative terms, it's negligible for the sun as well...)

  16. Re:I don't understand why they need permission on US Wary of Allowing Russian Electronic Monitoring Stations Inside US · · Score: 2

    Or just found and fund a corporation and do it in the open.

    It could even be a for-profit company run by American staff, charging the Russian
    government for the data. Broadcasting needs a license, but I don't see how a
    reception-only monitoring of signals on private ground run by a private company
    would need any kind of official permission.

    Receiving signals within some US government-run frequency bands might be
    illegal (I didn't find any examples with a quick search though), but GLONASS
    signals don't really fall in that category...

  17. Re:Why did they ask? on US Wary of Allowing Russian Electronic Monitoring Stations Inside US · · Score: 4, Interesting

    What prevents them from sticking 5 RF receivers in each of the russian consulates. Or indeed, paying for a couple of dozen boxes on roofs in the USA hooked to an internet connection.

    Roofs (and even buildings, for that matter) are much too wobbly for reference-precision GPS
    signal calibration. Stations like this are directly anchored to bedrock, preferably with minimal
    seismic activity (that includes even not-so-nearby roads) and with a full-sky view.

    I doubt that any of the official russian presences satisfies those constraints.

    Note that I'm not saying clandestine (or rather "undeclared" - I don't see how anyone would need
    permission to run a non-broadcasting monitoring station on private ground) are impossible or don't
    exist, just that urban locations and building roofs wont work.

  18. Re:Many smartphones use both Glonass and US GPS on US Wary of Allowing Russian Electronic Monitoring Stations Inside US · · Score: 3, Informative

    One interesting thing I learned from the article is that many (?most) current smartphones use both Glonass and the US GPS system for position fixes.

    Indeed. Allegedly, my VZW Droid 4 can grok Glonass.

    I have no idea if it actually works -- if there's an app for that, I haven't seen it.

    This one can differentiate between Navstar (GPS's actual name, it is only a GPS)
    and GLONASS: https://play.google.com/store/apps/details?id=com.eclipsim.gpsstatus2

    Round sats in the status display are Navstar, square ones (satellite numbers 80+) are GLONASS.
    Note that most GLONASS-capable phones will only switch it on if Navstar reception alone is weak
    and/or unreliable, because it involves additional cirquitry and therefore reduces battery life. So if you
    have excellent reception, you might not see any "squares" even with GLONASS-capable hardware.

  19. Re:Non-destructive testing on Clam That Was Killed Determining Its Age Was Over 100 Years Older Than Estimated · · Score: 2

    errr... Schrodinger's clam .... so much for cut and paste.

    Here you go: ö
    (using the HTML entity. slashdot's encoding is still WTF-8 based)

  20. Re:20% failure rate in 3 years is LOW? on 25,000-Drive Study Gives Insight On How Long Hard Drives Actually Last · · Score: 4, Insightful

    Careful. These are consumer grade drives. In other words, they're meant for use by typical consumers, where the disk spends 99.9999% of its time track following and running in a relatively low power state.

    That would amount to about 32 seconds of activity per year.
    There's more drive activity than that in a single Windows boot.
    Stop making up numbers.

  21. Re:Money on Journalists Banned From Using Smartphones At 2014 Sochi Olympics? · · Score: 1

    IOC couldn't give a fuck so long as they get their billions

    Which they then spend on the next Olympics.

    Isn't that what the host city is for? I don't think the IOC actually spends any
    money on the games themselves, on the contrary: It's their main cash source.

  22. Re:Were you referring to South American ? on Critics Reassess Starship Troopers As a Misunderstood Masterpiece · · Score: -1, Troll

    the ranks seemed European (the US has no Marshals)

    I know what you mean, but... US marshals.
    (*smirk*)

  23. Re:Like HST (but not in a good way) on Cold War Spoils: Amateur Builds Telescope With 70-Inch Lens · · Score: 3, Informative

    Remember how when it first went up, the hubble had problems focusing clearly? The designers forgot that its mirrors would be deformed/reshaped by the lack of gravity. Essentially, the hubble's primary mirror was optically designed to work as a telescope mirror on earth, not in space.

    Uh, no. That would've been an amateur mistake to make and didn't happen.
    Instead, the amateur mistake made was not to properly verify that the grinding
    machine was actually grinding correctly. They even ignored measurments by
    another instrument showing a faulty shape, assuming the instrument to be faulty instead.
    And skipped the final post-assembly check to save time and money.

    The mirror simply was ground extremely precisely into a wrong shape, and nobody noticed.

    But as always in cases like this, the whole story is more complex and consists of a lot of
    things not going as planned. It's a good and instructive read.

  24. Re:Liquidity on Barbarians At the Gateways · · Score: 3, Funny

    a HFT system will notice the spread, but from one at 11 and sell it to the other at 10 and capture the difference for themselves.

    So I guess they make it up on volume?

  25. Re:Federal Reserve Notes Used to Sell Illicit Good on Silk Road Shut Down, Founder Arrested, $3.6 Million Worth of Bitcoin Seized · · Score: 1

    Ah crap. I was thinking of Federal Reserve Bank Notes.

    There's a confusing amount of different kinds of Dollar notes (National Bank Notes, Federal Reserve Notes, ...) with very similar names.