Physicists at the University of Zurich have developed an amazingly simple device that allows heat to flow temporarily from a cold to a warm object without an external power supply. Intriguingly, the process initially appears to contradict the fundamental laws of physics.
A team of researchers led by Berkeley Lab has observed chirality for the first time in polar skyrmions, in a material with reversible electrical properties -- a combination that could lead to more powerful data storage devices that continue to hold information, even after they've been turned off.
The world's most advanced particle accelerator for investigating the quark structure of the atom's nucleus has just charmed physicists with a new capability. The production of charm quarks in J/ψ (J/psi) particles by CEBAF at the Department of Energy's Thomas Jefferson National Accelerator Facility confirms that the facility has expanded the realm of precision nuclear physics research with electron beams to higher energies.
The optical laser has grown to a $10 billion global technology market since it was invented in 1960, and has led to Nobel prizes for Art Ashkin for developing optical tweezing and Gerard Mourou and Donna Strickland for work with pulsed lasers. Now a Rochester Institute of Technology researcher has teamed up with experts at the University of Rochester to create a different kind of laser -- a laser for sound, using the optical tweezer technique invented by Ashkin.
After watching YouTube videos of people supercooling water in a bottle and then triggering it to freeze by banging it, something about this concept solidified for Matthew M. Szydagis, especially when he saw it again during the Disney movie 'Frozen.' During the 2019 American Physical Society April Meeting in Denver, Szydagis will describe how this inspired him to explore whether a subatomic particle like dark matter can trigger the freezing of supercooled water.
In quantum mechanics, measuring both the position and speed of a particle at the same time is not possible. To identify a particle's characteristics, physicists introduced the notion of quasi-distribution of position and momentum. In a new study published in EPJ ST, Dr J.S. Ben-Benjamin and colleagues from Texas A&M University, USA, reverse this approach; starting with quantum mechanical rules, they explore how to derive an infinite number of quasi-distributions, to emulate the classical mechanics approach.
Article describes analytical confirmation that transient CHI, a novel device for starting up fusion plasmas, can achieve startup in future compact fusion facilities.
The research of samara scientists will help to explain how building material for planets appears in the universe.
This tip sheet highlights interesting presentations from the upcoming 2019 APS April Meeting in Denver -- a major international meeting that features talks and presentations about discoveries in astrophysics, particle physics, energy research and many other areas of modern physics. The meeting runs from Saturday, April 13 through Tuesday, April 16 at the Sheraton Denver Downtown Hotel, located at 1550 Court Place in downtown Denver.
University of Central Florida researchers have developed a way to control the speed of light. Not only can they speed up a pulse of light and slow it down, they can also make it travel backward.