Articles tagged with Angular Momentum
Healthy mice swing their tails actively to counterbalance tilts, producing significant angular momentum. This study provides a new experimental setup for assessing mouse balance and improves understanding of neurological mechanisms behind balance issues.
Researchers have identified a subcycle conservation law between angular momentum and energy during strong-field ionization, as revealed by the analysis of correlated spectrum of angular momentum and energy. This law remains applicable down to the subcycle level, offering new understanding of light-matter interactions.
A team of astronomers discovered new insights into the forces that shape protoplanetary disks using the James Webb Space Telescope. They traced disk winds in unprecedented detail, revealing an intricate structure and a pronounced central hole inside each cone-shaped envelope of winds.
Researchers at the Max Planck Institute have made a groundbreaking discovery in chiral materials, enabling the creation of orbital electronics. The study reveals that certain materials naturally possess orbital angular momentum monopoles, which can be harnessed for memory devices and other applications.
Researchers have introduced a novel particle encoding mechanism that addresses longstanding issues in particle identification, enabling precise digital representation of complex particles. This new method is adaptable for future discoveries and has the potential to unlock new frontiers in particle physics.
Astronomers Khyati Malhan and Hans-Walter Rix identified two proto-galactic fragments, Shakti and Shiva, that merged with an early Milky Way between 12-13 billion years ago. These remnants share low metal content and unusual energy and angular momentum values, making them potential ancestors of the galaxy.
A new technique using optical orbital angular momentum lattice (OAML) multiplexed holography boosts information storage capacity and offers novel approaches for implementing high-capacity holographic systems. The research unlocks supplementary encrypted dimensions, enhancing storage capacity and overcoming limitations of traditional me...
The development of a new photonic technique enables the precise control of photonic angular momentum, allowing for the efficient recognition and real-time control of total angular momentum modes. The technique, which involves the symmetrical cascading of two units, has been experimentally demonstrated to recognize up to 42 individual T...
Researchers at Ohio State University have detected a previously unknown physics phenomenon, the orbital Hall effect, which could revolutionize data storage in future computer devices. The study's findings suggest that utilizing orbital currents instead of spin currents could lead to lower energy consumption and higher speeds.
Researchers have generated nearly deterministic OAM-based entangled states using QDs, enabling hybrid entanglement states in high-dimensional Hilbert spaces. This breakthrough offers a bridge between photonic technologies for quantum advancements.
Researchers created an isolated turbulent blob by firing vortex rings into a tank of water, allowing precise tracking of its parameters. This breakthrough enables scientists to study real-world turbulence more effectively, exploring questions about dissipation, expansion, and energy spread across scales.
Chiral phonons convert waste heat into spin information, promising energy-efficient devices for computing and data storage. Researchers created a spin current at room temperature without magnetic materials, opening the door to cheaper, more accessible spintronic devices.
A team of scientists from the University of Exeter has made a key breakthrough in predicting fluctuations in the rotation of the Earth and the length of the day. They used mathematical modeling to show that changes in the atmosphere can be predicted more than a year in advance, linking geodesy with climate prediction.
Researchers discovered a new perspective on the tropical cyclone size-intensity relationship, finding that latitude and environmental vertical wind shear are primary influences. This reexamination sheds light on the physical mechanisms underlying coordinated changes within TCs, enabling better warning systems.
A new broadband near-field chiral source enables comparison of different edge states to advance applications in integrated photonics and wireless devices. The research advances the field of chiral photonics science, promoting applications of chiral-sorting technology for microwave metadevices.
Scientists create artificial lattice structure with infinite topological charge numbers by coupling photons' spin-orbit coupling to internal degrees of freedom. The setup allows direct measurement of physical quantities and paves the way for exploring high-dimension topological physics.
Researchers have successfully driven nanoparticles to orbit below light diffraction limit, achieving high orbital rotation speeds of over 1000 r/s and subdiffraction radii of 70 nm. This new mechanism enables efficient spin angular momentum conversion to orbital angular momentum.
Researchers have successfully probed electronic angular momentum to a chemical reaction at the quantum state-resolved level, offering a detailed understanding of molecular crossed beam experiments and theoretical simulations. This breakthrough reveals subtle influences of electronic angular momentum on chemical product distributions.
Researchers have developed a new method to detect anyons in fractional quantum Hall systems by binding impurity particles to them. This approach doesn't require particle exchange or interferometry and can be applied to various quantum simulators.
Electron spin waves can carry information, but their lifetime is limited. Researchers have found a way to extend this lifetime by adjusting crystal orientations, allowing the spin wave to persist for up to 30% longer.
A study examines angular momentum constraints on the Moon's formation, revealing that high obliquity scenarios are incompatible with the present-day system. In contrast, low obliquity scenarios could explain how a fast-rotating postimpact Earth slowed to its present rotation rate.
Researchers found a collective resonance in 11B that explains the mysterious β-delayed proton decay of the neutron halo ground state of 11Be. The resonance has features similar to a nearby proton emission channel, suggesting that it may be involved in a quasi-free decay process.
Researchers propose a scheme to realize selective directional coupling of near-field longitudinal waves based on inherent geometric properties and symmetry analysis. The work enables the creation of Janus and Huygens sources, which selectively couple with one side or two sides of the near-field pattern, respectively.
A physics professor and first-year physics major demonstrate how the center-of-mass of a nearly empty shampoo bottle affects its stability when placed on a tilted surface. The study reveals that the altitude of the center of mass is a nonlinear function of the liquid level, with lower levels resulting in higher altitudes.
A team of researchers has developed a method to generate mechanical vibration in microcantilever structures using spin current. The study demonstrates the potential for spin current to act as a driving force for micro machines without requiring electrical wiring.
Researchers have discovered a new property of light, self-torque, which can be naturally generated through high-harmonic generation. This property enables beams with changing angular momentum to modulate properties similar to frequency modulation in communications.
Researchers at ICFO have discovered a new type of optical singularity with the topology of a knot, which is topologically protected and robust against perturbations. This discovery expands light's degree of freedom and opens up new possibilities for applications in communication, microscopy, lithography, and spectroscopy.
Researchers from Georgia Institute of Technology found that perfecting an ideal 'invisibility' cloak for stress waves is impossible. However, limited cloaking technology could still provide a degree of protection against certain stress waves, particularly in earthquakes.
Researchers observe acoustic spin in airborne sound waves, leading to new physics and applications for emerging topics in fundamental physics and acoustics. The discovery enables the control of particle rotation with torque and holds promise for acoustic communication.
Researchers used ultrashort x-ray pulses to monitor absorption of circularly polarized x-rays by Fe and Gd atoms during ultrafast demagnetization. They found that the demagnetization process at Gd atoms is significantly faster than in pure Gd.
A novel experiment at PPPL has demonstrated the validity of magnetorotational instability (MRI) theory, which explains how stars and planets form from accretion disks. The study found that weakly tethered rotating balls gained angular momentum and shifted outward, consistent with MRI predictions.
Researchers at ETH Zurich found that most angular momentum is transferred to the lattice during ultrafast demagnetization, twisting the sample as magnetization rapidly decreases. The discovery offers guidance for technological applications of ultrafast optical switching.
Researchers used a rotating water-filled device to simulate the magnetorotational instability, which helps explain how matter falls inward to form planets in a reasonable time. The experiment confirmed the strong impact of magnetic forces on metal behavior, paving the way for a clearer understanding of accretion disk dynamics.
A new technique combines satellite galaxies' motions with computer simulations to estimate a galaxy's mass. The method yields more reliable results than previous methods, especially for large datasets generated by current and future surveys.
Researchers at Bielefeld University have created a molecule with the largest observed spin in a single molecule, equivalent to 120 electrons. The Fe10Gd10 molecule exhibits a quantum phase transition, where ten thousand states become degenerate and exhibit giant entropy values.
Researchers have discovered that quark-gluon plasma has the highest vorticity ever recorded, surpassing even the fastest spinning fluids. The findings provide new insights into the properties of this primordial soup and may help scientists understand the strongest force in nature.
Researchers Simon Lock and Sarah Stewart propose a new type of planetary object called a synestia, which forms through giant impacts. Synestias could be responsible for moon formation, particularly in our solar system where Earth's moon is similar to its parent planet.
Researchers observed a protostar and found that gas can shed angular momentum by being cast into the vertical direction, creating a 'traffic jam' near the centrifugal barrier. This behavior aligns with calculations using a ballistic model, shedding light on the dynamics of stellar formation.
A recent study by Caltech researchers Konstantin Batygin and Mike Brown suggests that the large, undiscovered planet Planet Nine is responsible for the sun's tilted orbit. The planet's massive size and unique orbit cause a multi-billion-year wobble in the solar system, resulting in a six-degree tilt.
A new type of laser enables the creation of twisted light with controlled spin, producing vector vortex beams and polarised light. This innovation has significant applications in optics, machining metals, and communication.
Researchers at the University of Toronto have discovered a new set of rules governing the formation of materials with unusual properties, including superconductivity and superfluidity. By studying ultracold atomic interactions, they found a new type of pressure that arises from p-wave interactions.
Researchers introduce technique to calculate and understand angular momentum in complex systems, simplifying the 'angulon problem'. The novel canonical transformation removes complex algebra, offering insights into atomic, condensed matter, and chemical physics.
Researchers discovered baby mantises deliberately create spin and harness it in mid-air to rotate their bodies for precise target landing. By controlling angular momentum, they achieve remarkable accuracy in a fraction of a second.
Astrophysicist Dr. Michael Kesden's research provides new insights into binary black hole mergers and their connection to gravitational wave detection. The solutions can significantly impact the study of black holes and the search for gravitational waves in the cosmos.
According to a new hypothesis, black holes may have distinct features, dubbed 'hair', which are influenced by the surrounding matter. This concept contradicts the traditional 'bald' model proposed by Roy Kerr in 1963.
Researchers at the Joint Quantum Institute create more complicated collisions between atoms using laser light, enabling the observation of high-angular-momentum scattering in long-lived atomic Bose-Einstein condensates. This innovation may facilitate the creation of exotic quantum states for practical applications like quantum computing.
Researchers have created a nano-sized light mill motor that can control rotational speed and direction by tuning incident light waves. The motor's power density is high, and it can be used to drive micro-scale objects, enabling new applications in nanotechnology and biology.
Changes in atmospheric pressure and wind patterns cause forces that act on the solid Earth, leading to slight slowdowns in Earth's rotation during El Niño years. This effect is tied to the law of conservation of angular momentum, which connects the Earth's rotation rate with its overall mass.
A new study finds that global warming will increase the length of the day by 0.11 seconds over the century due to changes in Earth's angular momentum. The effect is expected to be small and difficult to distinguish from natural variations, but measurable on a decade scale.