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User: dotancohen

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  1. Re:What this actually means on First Exoplanet Discovered Orbiting Two Stars · · Score: 1

    I should also mention the possibility that the planet is not orbiting in the same plane as the stars! Though that is probably not a possibility here, considering how we detect dual-star systems and how Kepler detects planets.

  2. Re:What this actually means on First Exoplanet Discovered Orbiting Two Stars · · Score: 1

    I also wanted to bring up the Pluto - Charon system. You are correct regarding the orbits of Nix, Hydra, and apparently the newly-discovered Plutean moon. Their velocity vectors seem to be consistent in magnitude, and perpendicular to the barycenter.

    However, the case of a planet orbiting two stars, assuming that the stars are within a few orders of magnitude of each other but that the planet's mass is quiet a few magnitudes less then the star's mass (Earth: 10^24, Sun/Sol: 10^30), will see it's velocity vector change magnitude often and it will rarely be perpendicular to the barycenter.

  3. Re:What this actually means on First Exoplanet Discovered Orbiting Two Stars · · Score: 1

    That is incorrect. The idea that all the objects orbit the barycenter is valid for objects within a few orders of magnitude, which pull on each other. The planet's mass really is too little to have any nonnegligible effect on the stars (which do pull on each other). Thus the stars' barycenter is not wobbling to meet up with the planet.

    Three-body problems are not intuitive, especially when you have objects of vastly different mass.

  4. Re:But does it run... on Russian President Interested In Funding ReactOS · · Score: 1

    all the viruses, worms and other malware?

    Yes. The whole point is to duplicate the win32 API (like Wine) and the kernel (unlike Wine). One terrific measure of that goal is to support "undocumented features", aka exploitive malware.

  5. Re:Windows 8 Metro on Microsoft Reveals More Windows 8 Details · · Score: 1

    The name was obviously chosen to appeal sexually to the young, homosexual crowd that Apple appeals to while seeming benignly innocent to those who are outside that circle.

  6. Re:One click on Amazon's Bezos Seeks Spacecraft Patents · · Score: 1

    The bit that's missing from the summary is that you can trigger the sea landing with one click.

    No the part missing from the summary is the explanation of what a ship is.

    Oh, wait, it is there in parenthesis, good thing!

  7. Re:Check Sinking a Large Boat w/tank of rocket fue on Amazon's Bezos Seeks Spacecraft Patents · · Score: 1

    Then why do it on a boat? Why not a solid structure on land? Surely the boat cannot propel itself fast enough to actually catch the falling spacecraft and it is the spacecraft's responsibility to hit the boat.

  8. Re:Of course they're overpriced. on Is There a Hearing Aid Price Bubble? · · Score: 1

    Our insurance didn't cover it 100% because it wasn't "medically necessary" (they'd rather you use formula) and it would have been around $125/month out of pocket for us.

    The whole pump can be had for about $250 USD. Here is the first one that I found browsing local websites (Hebrew) and if I spend some time I'll be able to find it cheaper:
    http://www.shilav.co.il/Baby/Content/Babies/BreastFeeding/Products,1369.aspx

    It would cost the insurance company less to buy the pump outright than to rent it for two months!

  9. Re:Why on Nike to Unveil Self Lacing Shoes? · · Score: 1

    Is there actually a benefit to self lacing shoes?

    I have a manual handicap and cannot tie laces. So this is good news for me!

  10. Re:Thanks Slashdot on Heathkit DIY Kits Are Coming Back · · Score: 1

    For reminding me I'm old today.

    This post made you feel old? Good thing you we're wasting time here a few hours ago:
    http://tech.slashdot.org/story/11/09/08/1510250/1970s-Polaroid-SX-70-Cameras-Make-a-Comeback

    Related? Maybe. Taco and Jobs came and left together...

  11. Re:Rape requires intention on TSA Groper Files Suit Against Blogger · · Score: 1

    And what would you be charged with if you did this to a stranger at some bar perhaps?

    Red herring.

  12. Re:There are easier ways... on Satellite Captures Burning Man From Space · · Score: 1
  13. Re:Rape requires intention on TSA Groper Files Suit Against Blogger · · Score: 1

    Except that there were no fingers stuck in vaginas. The fine author notes that the TSA agent pushed the side of her (the agent's) hand between her (the author's) labia, through her (the author's) clothes.

    The labia are part of the vulva, not the vagina.

  14. Re:That's good news on Porn-Industry Outsiders Fear 'Shakedown' In .XXX TLD · · Score: 1

    Uzi Nissan was selling used cars under the name Nissan in the 1970s, when the large automobile manufacturer known today as Nissan was still called Datsun. You should only know the hell that Nissan Motors put Uzi through over the domain name. That is the reason why I did not buy a Nissan in 2007, and the reason why I won't be buying a Nissan next year.

    http://nissan.com/

  15. Re:"Entirely" isn't relevant. on 'Cosmo' — a C#-Based Operating System · · Score: 1

    I read that as "C was developed to be a language in which to write an operating system". That means that you are right, Unix was in fact written to show that an OS could be written in C.

    However, the situation is that C# is a language that was never intended to be used to code an OS. So I am changing my argument, but the point remains the same.

  16. Re:Just in time... on E Ink Demos New Displays, Gadgets At IFA 2011 · · Score: 1

    ...after a few months of being aggressively fingered, scratched, thrown, banged, sat and vomited upon...

    That's the third vomit-porn reference this week!
    http://slashdot.org/comments.pl?sid=2413860&cid=37311048 ....I can't find the other one....

  17. Re:I'm convinced! on E Ink Demos New Displays, Gadgets At IFA 2011 · · Score: 1

    You forget the obvious alternative; a single long stretch of paper. It could be rolled up to make it portable. Now THAT would be progress!

    That's so last-last-last millennium:
    http://en.wikipedia.org/wiki/Torah_scroll

  18. Re:Hey, Gerber does not get to monopolize the name on Porn-Industry Outsiders Fear 'Shakedown' In .XXX TLD · · Score: 1

    the concept of 'vomit-porn' is not only new to me, but horizon-widening in every sense ...

    No, the horizon-widening porn is called scat. Don't google it!

  19. Re:"Entirely" isn't relevant. on 'Cosmo' — a C#-Based Operating System · · Score: 1

    Unix was.

    And it does still demonstrate that fact.

    Unix was written in C, but not just to prove that it could be done. I'm open to correction, though.

    If I wrote a game entirely in Python, say, except for some OpenGL bindings in C, would you say I'd successfully written a game in Python, or would you nitpick about the OpenGL bindings and demand that I somehow write a video driver in Python, too?

    I would say that you successfully wrote a game in Python, because OpenGL and Python are intended for doing different things. However, if you write a game in Python to prove that a game can be written using _only_ Python, then I would in fact nitpick that you resorted to non-Python technologies.

    The OS doesn't run in the CLR. It compiles CLR bytecode to native and runs that.

    You're right about that. Sorry.

  20. Re:"Entirely" isn't relevant. on 'Cosmo' — a C#-Based Operating System · · Score: 1

    Linux is written mainly in C, but there's also inline assembly.

    But Linux is not marketed as being written in C to demonstrate that an OS can be written in C. This OS is ostensibly written in C# to demonstrate that an OS can be written in C#. Oh, and the C# CLR is written in C.

  21. Re:Is it dirty? on 'Cosmo' — a C#-Based Operating System · · Score: 1

    Requiring a Windows environment to compile a OS is like using dirty energy to produce clean energy.

    Right, where did you think that electric cars got their electricity from? Burning oil in a power plant.

    But solar is worse. Google solar-cell production methods. Hydro is clean though... Oh, wait, do you know how much energy (from oil) is used to construct a hydro station?

    Nukes are pretty clean... if they are handled properly. That's a pretty big if though.

  22. Re:Money on See a Supernova From Your Backyard · · Score: 2

    Here is a great idea for improving the economy - stimulate more R&D, research and development, more supernovas need to be found, more telescopes must be built, put the money into this, get some engineering going. Fuck wars, lets build telescopes. Build more telescopes, build more space ships. Need more engineers for this, need more scientists, need more architects, need more of everything. Build more, spend on building, stop wars and get going.

    Go check how many space exploration lobbyists exist in Washington then check how many petroleum and military-tech lobbyists exist in Washington. Now try to rephrase your suggestion in terms of oil usage and military technology.

  23. Re:Busines/Economics/Statistics on Ask Slashdot: Best Second Major For a Mechanical Engineer? · · Score: 1

    Actually, considering the OP's goals, I'm surprised that nobody has mentioned Materials Engineering yet. The OP is right: there is much to improve on in automobiles and other machinery. But lack of good mechanical engineers is not the bottleneck. Lack of good materials is the bottleneck.

  24. Re:have direction, but not distance on Astronomers Find Unusual Star · · Score: 1

    Thank you for the very informative post.

    This procedure seems very well thought out, and I assume that its validity has been tested by other methods, such as parallax. Do we have similar methods for non-MS stars?

  25. Re:You're wrong about addons on Updated: Mozilla Community Contributor Departs Over Bug Handling · · Score: 1

    Hmm...fix bugs that bother 0.001% of users, or add features that benefit 1% of users? As a developer, it's a tradeoff.

    0.001% of users * 6000 bugs = 6% of users are hitting these bugs.

    In December 2007, when Firefox was at about 25% market share, the Mozilla CEO started that they had 125 million users. Now that Firefox is about 50% of the market and the market is bigger, lets say they have 250 million users. That's 15 million people with a buggy Firefox. Still sound insignificant? That's twice the population of my entire nation.