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

Publication: perpetuum mobile of fourth type

  1. Feb 1, 2013 #1
    A fresh publication (few days ago) in Physical Review (American Physical Society):


    Abstract: <skipped/technical> The suggested “zero-point-driven” devices — which have no internally moving parts — correspond to a perpetuum mobile of a new, fourth kind: They do not produce any work despite the fact that their equilibrium (ground) state corresponds to a permanent rotation even in the presence of an external environment. We show that our proposal is consistent with the laws of thermodynamics.

    Any comments about the "perpetuum mobile of fourth kind" from the physics community/specialists?
  2. jcsd
  3. Feb 1, 2013 #2


    User Avatar
    2017 Award

    Staff: Mentor

    Interesting idea, and it does not look impossible to realize. A temperature below 50mK (at 50T magnetic field) requires constant cooling of the environment, but it is possible. The construction of the ring might be challenging.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Publication perpetuum mobile Date
What are some good pedagogical QM papers? Jun 7, 2015
CP and perpetuum mobile Sep 14, 2012
Carrier Mobility of a semiconductor Sep 8, 2009