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Fuel Free Spacecrafts Using Graphene

William Robinson writes: While using a laser to cut a sponge made of crumpled sheets of Graphene oxide, researchers accidentally discovered that it can turn light into motion. As the laser cut into the material, it mysteriously propelled forward. Baffled, researchers investigated further. The Graphene material was put in a vacuum and again shot with a laser. Incredibly, the laser still pushed the sponge forward, and by as much as 40 centimeters. Researchers even got the Graphene to move by focusing ordinary sunlight on it with a lens. Though scientists are not sure why this happens, they are excited with new possibilities such as light propelled spacecraft that does not need fuel.

9 of 265 comments (clear)

  1. Explanation seems to violate charge conservation.. by PaulBu · · Score: 5, Insightful

    Where the heck those extra electrons came from? Absorbing photon momentum (more efficient solar sail) sounds feasible, but "accumulating electrons" from nowhere and then emitting them in one direction (where light came from) ... less so.

    Paul B.

  2. Re:Explanation seems to violate charge conservatio by binarylarry · · Score: 5, Funny

    Lets test your hypothesis by creating a slashdot poll.

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    Mod me down, my New Earth Global Warmingist friends!
  3. Re:Fuelless by cdrudge · · Score: 5, Funny

    If only there was a giant source of light in the galaxy constantly releasing more energy then we ever could hope to use that we could harness...

  4. Re:Fuelless by Mantrid42 · · Score: 5, Funny

    Look, if I can't be pedantic on /., where am I supposed to go?

  5. Re:Even More Thrust by Anonymous Coward · · Score: 5, Informative

    Not any ordinary Xenon, but 136Xe.
    In the various Ion Engines designed, built, and occasionally functioning, 136 Xe is the propulsive gas of choice, and pretty much all of the (Unclassified) Literature on the Subject refer only to it.
    Under Plasma conditions, Xenon is anything but inert, and there is at least one (Relatively) stable 136xe-3He compound that is only chemically stable when Ionized.
    This is also true with certain Helium Hydrides, but for Propulsion purposes, one needs as much Nuclear Mass that is easily Ionized to High Charge States as possible.

    They wouldn't let us play with Radon.

  6. Achievement unlocked! by Jeremi · · Score: 5, Funny

    Do you ever get the paranoid feeling that someone is occasionally modifying the laws of physics in order to advance the plot?

    "Oh look, they're going to be stuck on Earth for an excruciatingly long time due to the exponential-propellent-scaling problem. Let's add a new capability to graphene that will give them a work-around for that."

    I claim that two years ago the exact same graphene experiment would have shown no unexpected results; but now in 2015 we see this suspiciously useful behavior appear. I'm not sure how to test my hypothesis though :)

    --


    I don't care if it's 90,000 hectares. That lake was not my doing.
    1. Re:Achievement unlocked! by pushing-robot · · Score: 5, Funny

      You're not supposed to talk about the expansions like that. This is a RP server.

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      How can I believe you when you tell me what I don't want to hear?
  7. Re:Obviously by donscarletti · · Score: 5, Insightful

    You don't really have to have much knowledge about anything to second guess experts in any field. Just hold to the rule that "all amazing results are caused by inaccurate measurement, poor sampling, cognitive leaps or coincidence" and you'll be right 70% of the time.

    The actual breakthroughs will be so old hat by the time they have been tested properly that nobody will talk about them and you'll never eat crow.

    Remember, cynicism and wisdom lead to the same result most of the time, only wisdom is so much harder to learn.

    --
    When Argumentum ad Hominem falls short, try Argumentum ad Matrem
  8. Re:Obviously by michelcolman · · Score: 5, Insightful

    No, it's not pseudoscience.

    If a researcher perfoms an experiment and gets a very strange, unexpected result, what should he do? Say "that result is clearly impossible, so I shall just disregard it"?

    No, he will try to repeat the experiment, gather data, and try to figure out what's going on. Maybe (most likely) there's a perfectly valid explanation within existing scientific frameworks, maybe it's a setup or measurement error, or maybe, just maybe, this is a new effect that hadn't been discovered yet. So the scientist tries to figure that out, and tells others about the experiments so they can try the same thing and see if they get similar results.

    That's how science works.

    I'm sure you would have called the theory of relativity "pseudoscience" back in the day of Newtonian physics. New things do get discovered sometimes. As long as it's being researched using scientific methods, that's science and not pseudoscience. Yes, they probably will be wrong. That doesn't mean it's not science.