Seeing with radio waves
Scientists from the Division of Physics at the University of Tsukuba used the quantum effect called 'spin-locking' to significantly enhance the resolution when performing radio-frequency imaging of nitrogen-vacancy defects in diamond. This work may l.....»»
Team develops new method for communicating around arbitrary opaque walls
Information transfer in free space using ultraviolet, visible, or infrared waves has been gaining interest because of the availability of large bandwidth for high-data-rate communication. However, the presence of opaque occlusions or walls along the.....»»
Detecting hidden defects in materials using a single-pixel terahertz sensor
In the realm of engineering and material science, detecting hidden structures or defects within materials is crucial. Traditional terahertz imaging systems, which rely on the unique property of terahertz waves to penetrate visibly opaque materials, h.....»»
Most monstrous marsquake ever reveals where it came from
A seismic event that looked like an impact, but no craters to be seen. Enlarge / InSight captured seismic waves released when an impact formed this crater in 2021. But a similar event can't be tied to any craters. Earth.....»»
New-generation RO constellation "spire" challenges COSMIC-2 in atmospheric remote sensing
In a recent study, scientists from the Aerospace Information Research Institute (AIR) under the Chinese Academy of Sciences (CAS) investigated the performance of a commercial Global Navigation Satellite System (GNSS) Radio Occultation (RO) mission an.....»»
The Physics of Faraday Cages
You can't block electromagnetic waves, but there's still a way to keep electronic devices like cell phones in stealth mode......»»
Controlling waves in magnets with superconductors for the first time
Quantum physicists at Delft University of Technology have shown that it's possible to control and manipulate spin waves on a chip using superconductors for the first time. These tiny waves in magnets may offer an alternative to electronics in the fut.....»»
Astronomers capture formation of a powerful cosmic jet
Using a network of radio telescopes on Earth and in space, astronomers have captured the most detailed view ever of a jet of plasma from a supermassive black hole. The jet travels at nearly the speed of light and shows complex, twisted patterns near.....»»
VinFast signs up 27 potential U.S. dealers in shift to third-party sales
The Vietnamese EV maker is planning several waves of dealers across the U.S. as it launches models and builds a factory in North Carolina, a company adviser told Automotive News......»»
The Mystery of Cosmic Radio Bursts Gets Bright New Clues
New research from two teams shows that these fleeting blips can be faster and brighter, and come from much further away, than previously thought......»»
More heat waves and vanishing snow: The lake Tahoe basin"s future on a warming planet
Lake Tahoe is known for its crystal-clear blue water, scenic mountain backdrop, and world-class recreation opportunities. Unfortunately, the lake and surrounding basin aren't insulated from global climate change......»»
LIGO surpasses the quantum limit
In 2015, the Laser Interferometer Gravitational-Wave Observatory (LIGO), made history when it made the first direct detection of gravitational waves—ripples in space and time—produced by a pair of colliding black holes......»»
A solar "radio eclipse" ring of fire
On October 14, as most Californians were treated to a partial solar eclipse, researchers at the Owens Valley Radio Observatory (OVRO) took in a different view......»»
New exoplanet-informed research sets clearer bounds on the search for radio technosignatures
In a new study published in The Astronomical Journal, researchers used the known population of exoplanets and extrapolated to the much larger, unknown population of exoplanets to set better thresholds for planetary effects on signals from ETIs (extra.....»»
"Mind-blowing": Astronomers spot most distant radio burst yet
Eight billion years ago, something happened in a distant galaxy that sent an incredibly powerful blast of radio waves hurtling through the universe......»»
Revolutionizing radar: Integrated THz emitter for precise rotating target detection
You may not realize it, but the Doppler effect is everywhere in our lives, from tracking the speed of cars with radar to locating satellites in the sky. It's all about how waves change their frequency when a source (like a radar signal) and a detecto.....»»
A strategy for the spin-acoustic control of silicon vacancies in a 4H silicon carbide-based bulk acoustic resonator
Bulk acoustic resonators—stacked material structures inside which acoustic waves resonate—can be used to amplify sounds or filter out undesired noise. These resonators have found wide use in today's RF telecommunication, like Front-End Modules (F.....»»
Accelerating waves shed light on major problems in physics
Whenever light interacts with matter, light appears to slow down. This is not a new observation and standard wave mechanics can describe most of these daily phenomena......»»
Realizing vertical ultraviolet-B semiconductor laser diodes for high optical output
Ultraviolet (UV) rays are electromagnetic waves with wavelengths ranging from 100 to 380 nanometers (nm). These wavelengths can be classified into three regions: UV-A (315–380 nm), UV-B (280–315 nm), and UV-C (100–280 nm), with the latter two c.....»»
Waves of change: How sea-levels and climate altered the marine ecosystems at the South Pole 390–385 million years ago
During the Early-Middle Devonian period, a large landmass called Gondwana—which included parts of today's Africa, South America, and Antarctica—was located near the South Pole. Unlike today's icy conditions, the climate was warmer, and the sea le.....»»
Heat waves harm bird reproduction on agricultural lands, research suggests
Bird populations are in rapid decline across North America. While climate change is just one of the many factors influencing North American birds, its effects are significant and can interact with other stressors, such as habitat loss. A team of Univ.....»»