On Mon, May 13, 2013 at 2:45 PM, Harry Veeder <hveeder...@gmail.com> wrote:
> > > On Mon, May 13, 2013 at 2:23 PM, Harry Veeder <hveeder...@gmail.com>wrote: > >> Viewpoint: Crystals of Time >> >> Researchers propose how to realize time crystals, structures whose >> lowest-energy states are periodic both in time and space. >> >> http://physics.aps.org/articles/v5/116 >> >> quote <<Time crystals may sound dangerously close to a perpetual motion >> machine, but it is worth emphasizing one key difference: while time >> crystals would indeed move periodically in an eternal loop, rotation occurs >> in the ground state, with no work being carried out nor any usable energy >> being extracted from the system. Finding time crystals would not amount to >> a violation of well-established ruprinciples of thermodynamics. If they can >> be created, time crystals may have intriguing applications, from precise >> timekeeping to the simulation of ground states in quantum computing >> schemes. But they may be much more than advanced devices. Could the >> postulated cyclic evolution of the Universe be seen as a manifestation of >> spontaneous symmetry breaking akin to that of a time crystal? If so, who is >> the observer inducing—by a measurement—the breaking of the symmetry of >> time?>> end quote >> >> >> Comment: If the time crystal continues to "beat" at the same rate despite >> being measured then it violates the second law of thermodynamics. >> >> >> Harry >> > > Also, if a system can produce endless amounts of information but no useful > energy, that should be enough to call it a perpetual motion machine! > THE MEANING OF MOTION IS NOT REDUCEABLE TO ENERGY. > harry > > > reducible It seems google spell check does not underline spelling mistakes if you type in caps. harry
