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One of the biggest problems facing modern microelectronics is that computer chips can no longer be made arbitrarily smaller and more efficient. Materials used to date, such as copper, are reaching their limits because their resistivity increases dramatically when they become too small. Chiral materials could provide a solution here. These materials behave like left and right hands: they look almost identical and are mirror images of each other, but cannot be made to match.
Mid- and far-infrared birefringent crystals are key functional materials for polarization control, laser technologies, and infrared photonics. However, existing materials generally suffer from limited infrared transparency, an intrinsic trade-off between large birefringence and wide transmission windows, and challenges in optical characterization due to restricted crystal dimensions.
Sean Grayson, who has late stage colon cancer, apologized in court and said he froze during the encounter and made “terrible decisions”
For quantum computers to function, they must be kept at extremely low temperatures. However, today’s cooling systems also generate noise that interferes with the fragile quantum information they are meant to protect. Now, researchers at Chalmers University of Technology in Sweden have developed an entirely new type of quantum refrigerator, which is partly driven by the noise itself. This refrigerator enables very precise control over heat and energy flows and could play an important role in scaling up quantum technology.
For those who watch gravitational waves roll in from the universe, GW250114 is a big one. It’s the clearest gravitational wave signal from a binary black hole merger to date, and it gives researchers an opportunity to test Albert Einstein’s theory of gravity, known as general relativity.
Officers spoke with the man for several minutes, deploying TASERs multiple times before the man stepped toward them, wielding the shard, prompting them to fire shots
The recruit began the hiring process with NOPD in June 2025 and passed a background check, including screening through the FBI’s National Crime Information Center and E-Verify
The sky is getting crowded. In the last few years, the number of satellite launches has increased by an order of magnitude as mega-constellations of internet-powering hardware crowd into low Earth orbit. The pace of both launching and retiring these units is creating new kinds of pollution, potentially upsetting the climate system and the protective ozone layer.
Physical systems become inherently more complicated and difficult to produce in a lab as the number of dimensions they exist in increases—even more so in quantum systems. While discrete time crystals (DTCs) had been previously demonstrated in one dimension, two-dimensional DTCs were known to exist only theoretically. But now, a new study, published in Nature Communications, has demonstrated the existence of a DTC in a two-dimensional system using a 144-qubit quantum processor.
Time feels like the most basic feature of reality. Seconds tick, days pass and everything from planetary motion to human memory seems to unfold along a single, irreversible direction. We are born and we die, in exactly that order. We plan our lives around time, measure it obsessively and experience it as an unbroken flow from past to future. It feels so obvious that time moves forward that questioning it can seem almost pointless.
Scientists have long relied on tree rings to learn about ancient solar storms—rare bursts of high-energy particles from the sun that can disrupt satellites, power grids, and communication systems across the planet. When these particles hit Earth’s atmosphere, they create a radioactive form of carbon that trees absorb and store in their wood.
Researchers have created an optical device that can generate both electric and magnetic vortex-ring-like light patterns. These structured light vortices, known as skyrmions, are highly stable and resistant to disturbances, making them promising for reliably encoding information in wireless applications.
There is no measurement that can directly observe the wave function of a quantum mechanical system, but the wave function is still enormously useful as its (complex) square represents the probability density of the system or elements of the system. But for a confined system, the wave function can be inferred.
The Einstein–de Haas effect, which links the spin of electrons to macroscopic rotation, has now been demonstrated in a quantum fluid by researchers at Science Tokyo. The team observed this effect in a Bose–Einstein condensate of europium atoms, showing that a change in magnetization causes the coherent transfer of angular momentum from atomic spins to fluid motion, thereby experimentally demonstrating that angular momentum is conserved at the quantum level.
A British archaeologist recently made an incredible discovery in a forest: A 4.000-year-old stone circle, the first of its kind found in Gloucestershire, the Daily Mail reports:
![]() The discovery was made by Jon Hoyle, an archaeologist, who studied a light detection and ranging (LiDAR) scan of the woodlands and found something he wasn’t expecting. Hoyle recalls:
![]() Hoyle originally though the circle he saw on the scan might be a World War II gun emplacement, but when he went to the location of the object, he knew he had been wrong. Instead, he had just located a magnificent example of a stone circle. Purpose of Stone CirclesThough stone circles have been found all over the United Kingdom over the decades, they remain a mystery in many ways. For example: What purpose did they serve? Hoyle admits that’s not clear:
![]() Smaller Than StonehengeThe stone circle is much smaller than other more well-known cairns such as Stonehenge, but a description of it from The Sun and video of the site provide ample evidence that the site is indeed a major find when it comes to better understanding ancient history and the beliefs of those who came thousands of years before us:
![]() While Hoyle noted that he and many other researchers remain uncertain the full purpose of stone circles, others believe they may have played a more “cosmic” role:
![]() However, Kenneth Brophy of the University of Glasgow in Scotland disagrees with imparting the structures with such motives, noting:
And Gordon Noble of the University of Aberdeen calls stone circles houses for the departed:
Though we may never know the reason for these incredible structures, they continue to fascinate us centuries after they were first built. Here’s more on the stone circle found in Gloucestershire from the BBC: Featured Image Via BBC Screenshot |
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