Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Shawyer's EmDrive

  1. Nov 9, 2012 #1
    Roger Shawyer's EmDrive is claimed to have been validated by a university in China:



    These claims seem to fly in the face of skeptics who have pointed out that the EmDrive violates the conservation of momentum. What would be the most effective way to de-bunk EmDrive, or definitively prove whether it works or not?
  2. jcsd
  3. Nov 9, 2012 #2


    User Avatar

    Staff: Mentor

    I don't understand what's controversial. Photons carry momentum, don't they? That's how a solar sail works...

    Is the controversial part not that they are claiming some net thrust, but that they are claiming too much?

  4. Nov 9, 2012 #3


    User Avatar
    Science Advisor
    Gold Member
    Dearly Missed

    300 watts of light represents 1.0007 micronewtons of thrust. As you quote, they claim 85 millinewtons of thrust. Fishy.
    Maybe belongs in the debunking forum.
  5. Nov 10, 2012 #4

    Vanadium 50

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor

    Now we know why Acta Physica Sinica has an impact factor of 0.3.
  6. Nov 10, 2012 #5


    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2016 Award

    This is also not a BTSM topic.

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook