Proposed four dimensional crystal clock could theoretically outlast the universe itself
The problem with thinking about the improbability of a perpetual motion machine is that regardless of how clever you think you are, forever is forever, meaning even our own universe will one day, a long time from now, completely run out of energy and will die. This situation is known as the heat death of the universe, and at that point, nothing will be left. Except perhaps this clock…
Physicists believe it's possible to build a perpetual motion machine
io9.comAll bets are off. A prominent physicist has just announced that he’s developed a proof for “time crystals” that can move thanks to a break in the symmetry of time. And now he’s about to test his proof in the real world.
