Physicist proves impossibility of quantum time crystals
Superheated Bose-Einstein condensate exists above critical temperature
Ex nihilo: Dynamical Casimir effect in metamaterial converts vacuum fluctuations into real photons
Time crystals could behave almost like perpetual motion machines
Thermodynamics of visual images may help us see the world
New hybrid material simplifies organic transistor design
A clock that will last forever: Researchers propose a way to build the first space-time crystal
(Phys.org)—Imagine a clock that will keep perfect time forever, even after the heat-death of the universe. This is the "wow" factor behind a device known as a "space-time crystal," a four-dimensional crystal ...
On-site fabrication process makes taller wind turbines more feasible
Wind turbines across the globe are being made taller to capture more energy from the stronger winds that blow at greater heights.
New theory suggests way to teleport energy long distances
Atoms at negative absolute temperature: The hottest systems in the world
(Phys.org)—In cold regions on earth, negative temperatures on the Fahrenheit or Celsius scale can often occur in winter; in physics, however, they were so far impossible. On the absolute temperature scale ...
Creating time crystals with a rotating ion ring
Physics team proposes a way to create an actual space-time crystal
Topological light: Living on the edge
(Phys.org) —Topology—the understanding of how things are connected—remains abstract, even with the popular example of doughnuts and coffee cups. This concept, esoteric as it appears, is also neat because ...
A promising light source for optoelectronic chips can be tuned to different frequencies
Chips that use light, rather than electricity, to move data would consume much less power—and energy efficiency is a growing concern as chips' transistor counts rise.