Sister blog of Physicists of the Caribbean in which I babble about non-astronomy stuff, because everyone needs a hobby

Monday 10 April 2017

Negative mass

No, that's enough. Physics is weird and I don't like it.

Washington State University physicists have created a fluid with negative mass, which is exactly what it sounds like. Push it, and unlike every physical object in the world we know, it doesn’t accelerate in the direction it was pushed. It accelerates backwards.

Hypothetically, matter can have negative mass in the same sense that an electric charge can be either negative or positive. People rarely think in these terms, and our everyday world sees only the positive aspects of Isaac Newton’s Second Law of Motion, in which a force is equal to the mass of an object times its acceleration, or F=ma.

 https://news.wsu.edu/2017/04/10/negative-mass-created-at-wsu/?utm_source=G%2B&utm_medium=news-article&utm_campaign=G-plus

15 comments:

  1. What do you expect from a university whose nickname, derived from its initials, is "Wazoo"? :)

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  2. Slapped in the face with negative mass when he said You can shove it up your wazoo?

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  3. Well, they do say that they have "exquisite control"
    😔😞😕🙃😱😱😱🙈🙉🙊

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  4. The late Robert Forward would have been fascinated.
    projectrho.com - Antigravity - Atomic Rockets

    attn: Raymond McVay

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  5. You don't seem to appreciate the gravity of this matter. Negativity of the masses is a well-known phenomenon. Try to push them and you get a backwards response. Plenty of prior research on this is available in journals on mass psychology.

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  6. Or the anti-gravity of the matter, in case you tried to push it down toward the floor ...

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  7. Alright Rhys Taylor, what's the difference between effective negative mass and actual negative mass, and can you stabilize a worm hole with it?

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  8. Chris Greene after a good read, it does seem like what they're talking about is regular matter, spun up a lot so it behaves oddly, a bit like you might expect negative masses to behave. So possibly no worm holes. Maybe.
    There's no suggestion the effective negative matter imparts forces in other things as if it had negative mass, just that it itself behaves strangely when forces are applied.

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  9. Wow...they actually did it in my lifetime. I did not see that coming.

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  10. "Negative effective mass." Basically the same effect as someone leaning against a person who tries to push them. Nothing to see here, folks. No wormholes, no antigrav.

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  11. If they did create negative mass in the lab, it would have the interesting side effect of being the Frozen equivalent of a nuclear warhead - a negative temperature im/explosion. I know one paper concluded no such runaway effect was possible but they tweaked the principle of least action.

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  12. Go home physics! You're drunk.

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  13. Winchell Chung I miss Doctor Bob.

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  14. Troy Campbell I seem to remember a science fictional example of that in Pelligrino and Zebrowski's The Killing Star
    It made E=mc^2 run backward. Detonate one and ground zero was suddenly at zero Kelvin, and covered with hydrogen.
    They were using them during a fight inside the solar corona, the conventional use was to prevent the heat flux from the sun from vaporizing your ship.

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