5 ms·

Perhaps something that could be used in the MEGA drive.

hnbad 5y ago
Had to look up what you meant but I think it's this: https://medium.com/predict/mega-drive-the-tech-that-promises-near-light-speed-travel-d9d9ded1ca44 https://medium.com/predict/mega-drive-the-tech-that-promises... To clarify: to people outside North America "Mega Drive" normally refers to the Sega Genesis gaming console.
- kragen 5y ago
  It's a violation of the conservation of momentum; it's extremely unlikely to be real.
  - ganzuul 5y ago
    General relativity does not conserve energy.
    - thechao 5y ago
      Ok, I’ll bite: how do we manipulate local nonrelativistic spacetime curvature near a spaceship to take advantage of the magnetorestrictive properties of this material? I’ve just finished my last undergrad-equivalent course GR, so voice this in the appropriate math.
      - michael-ax 5y ago
        throw when heavy, pull when light. its crazy. https://www.scientificamerican.com/article/the-good-kind-of-crazy-the-quest-for-exotic-propulsion/ https://www.scientificamerican.com/article/the-good-kind-of-... https://owlcation.com/stem/What-is-the-Mass-Effect-Gravity-Assist-or-MEGA-Drive https://owlcation.com/stem/What-is-the-Mass-Effect-Gravity-A...
        thechao 5y ago
        You linked to ... woo? Like, this is not even science. I asked for a mathematical explanation of how to utilize the more exotic invariants of momentum in nonrelativistic spacetime, voiced in terms of GR. If the GP is going to claim this drive is possible because momentum isn't conserved in GR, the least they could do is use GR to show what they mean? It's a low bar, but it's there.
        ganzuul 5y ago
        https://en.wikipedia.org/wiki/Mach%27s_principle https://en.wikipedia.org/wiki/Mach%27s_principle Enjoy.
    - kragen 5y ago
      Hmm! I didn't realize that, and I also didn't realize that in a relativistic theory conservation of energy and momentum are the same thing. (Evidently some dumbfucks are downvoting your comment instead of checking Wikipedia.)
    - user-the-name 5y ago
      What.

Had to look up what you meant but I think it's this: https://medium.com/predict/mega-drive-the-tech-that-promises-near-light-speed-travel-d9d9ded1ca44 https://medium.com/predict/mega-drive-the-tech-that-promises... To clarify: to people outside North America "Mega Drive" normally refers to the Sega Genesis gaming console.

kragen 5y ago
It's a violation of the conservation of momentum; it's extremely unlikely to be real.
- ganzuul 5y ago
  General relativity does not conserve energy.
  - thechao 5y ago
    Ok, I’ll bite: how do we manipulate local nonrelativistic spacetime curvature near a spaceship to take advantage of the magnetorestrictive properties of this material? I’ve just finished my last undergrad-equivalent course GR, so voice this in the appropriate math.
    - michael-ax 5y ago
      throw when heavy, pull when light. its crazy. https://www.scientificamerican.com/article/the-good-kind-of-crazy-the-quest-for-exotic-propulsion/ https://www.scientificamerican.com/article/the-good-kind-of-... https://owlcation.com/stem/What-is-the-Mass-Effect-Gravity-Assist-or-MEGA-Drive https://owlcation.com/stem/What-is-the-Mass-Effect-Gravity-A...
      - thechao 5y ago
        You linked to ... woo? Like, this is not even science. I asked for a mathematical explanation of how to utilize the more exotic invariants of momentum in nonrelativistic spacetime, voiced in terms of GR. If the GP is going to claim this drive is possible because momentum isn't conserved in GR, the least they could do is use GR to show what they mean? It's a low bar, but it's there.
        ganzuul 5y ago
        https://en.wikipedia.org/wiki/Mach%27s_principle https://en.wikipedia.org/wiki/Mach%27s_principle Enjoy.
  - kragen 5y ago
    Hmm! I didn't realize that, and I also didn't realize that in a relativistic theory conservation of energy and momentum are the same thing. (Evidently some dumbfucks are downvoting your comment instead of checking Wikipedia.)
  - user-the-name 5y ago
    What.