Articles tagged with Microwave Radiation
Hurricane Loke is moving north in the Central Pacific, producing rough surf and large swells that will affect reefs and shorelines. The storm is expected to weaken to a tropical storm by Wednesday, August 26, as it moves towards the northwest.
The new technology uses a continuous flow chemical reactor and microwave heating to produce nanoparticles that emit light with precise color control. This could lead to improved LED lighting systems with reduced waste and toxicity, cutting the nation's lighting bill in half.
Typhoon Goni, a powerful storm, was tracked by NASA's Global Precipitation Measurement (GPM) mission core satellite. The data revealed strong storms surrounding the eye dropping rain at over 65 mm/h and maximum sustained winds near 132.3 mph.
Researchers have designed a new device that can convert a DC electric field into a tunable source of terahertz radiation. The device exploits surface plasmon resonance in hybrid semiconductors to produce coherent terahertz emission, with potential applications in medical imaging and security.
Typhoon Chan-Hom continues to strengthen as it moves through the Northwestern Pacific Ocean. Powerful winds of up to 55.9 mph/90 kph were detected near 25 meters per second from north of the center.
Scientists have identified a way to manipulate nuclei using electrons' magnetic moments, enabling the transfer of quantum information between particles. The discovery could lead to more stable systems for quantum computing.
ANA formed as subtropical storm on May 9, 2015, then intensified into a tropical storm. By May 10, it dropped heavy rainfall as it made landfall in South Carolina.
GPM and Suomi-NPP satellites observed subtropical storm Ana's development, with rainfall intensifying near the center as it moved towards the Southeast coastline. The storms transformation is under observation as ANA moves northwest, according to NHC.
Heavy rainfall from cyclone Quang affected western Australia, while a non-tropical system pounded the east coast, resulting in over 454 mm of rain in the Indian Ocean. In the Coral Sea, southeast Australia received above 356 mm of rainfall, causing widespread flooding and at least four reported deaths.
Typhoon Maysak is weakening due to vertical wind shear as it approaches landfall in Luzon on April 4. The storm had peak intensity of over 130 knots but has weakened to about 115 knots, with heavy rain detected in its northwestern side.
Physicists at TUM and University of Cologne develop theoretical description of behavior for magnetic vortices in conductors, semiconductors, and insulators. The theory predicts properties for optimal device development, promising compact frequency devices with high efficiency.
Scientists have found a method to electrically read out the orientation of magnetic vortices in nanodisks using characteristic microwaves. This knowledge could be used in novel memory technology and wireless data transmission.
Tel Aviv University researchers have discovered a practical solution to fog detection using cellular communication networks. The study utilizes higher cellular frequencies to detect even light fog, providing high-resolution spatial measurements and potentially reducing accidents. Current fog monitoring tools are insufficient, but the n...
A new study by scientists from Bangladesh explores the viability of a novel structure for generating high-power microwaves, offering an alternative to traditional approaches. The proposed semi-circular slow wave structure is capable of producing high-power microwaves via ultra-high-frequency radio waves.
Tropical Storm Mekkhala's heaviest precipitation was found on its western side, with powerful convective thunderstorms dropping rain at over 2.8 inches per hour. The storm's maximum sustained winds were near 57.4 mph on January 16, with public storm warning signals raised in the Philippines.
The two satellites measured significant rainfall in Tropical Depression Mekkhala, indicating the storm's intensification on January 13. The depression strengthened as it headed towards the Philippines, with maximum sustained winds near 30 knots and a circulation that became slightly better defined.
Researchers have developed a microwave imaging system that can produce 3D images of the breast, including the location of cancerous tissue. The system uses dielectric properties to differentiate between normal and cancerous tissue, offering better specificity than current methods.
Tropical Storm Adjali formed on November 16, 2014, and started dissipating two days later. GPM data showed moderate rainfall rates near the storm center, with rain falling at over 69 mm/hour per hour. The storm dissipated in the Southern Indian Ocean by November 20.
A team of researchers from Euclid TechLabs and Argonne National Laboratory has demonstrated a plug-and-play field-emission solution based on ultrananocrystalline diamond (UNCD) for microwave electron guns. The solution produces high-quality electron beams with low angle divergence and energy spread, comparable to photocathodes.
Researchers at MIT and Draper Laboratory have developed a new atomic timekeeping approach that could enable more stable and accurate portable atomic clocks. The system suppresses the AC Stark shift effect, allowing for smaller, less expensive devices with improved accuracy compared to current fountain clocks.
Researchers at Chalmers University of Technology have demonstrated that noise in microwave amplifiers is limited by self-heating at very low temperatures. The study, published in Nature Materials, shows that phonon radiation in the transistor is responsible for limiting noise.
Typhoon Nuri passed close to Japan's Iwo To island with maximum sustained winds at 92 mph. The storm is expected to continue weakening and transitioning into an extra-tropical storm over the next day or two.
The POLARBEAR collaboration has made the most sensitive measurements yet of the cosmic microwave background's polarization, revealing telling twists called B-modes that indicate cosmic history imprints. These findings suggest a new regime in precision cosmology, paving the way for solving mysteries about matter and energy at the Big Bang.
The POLARBEAR experiment uses microwave detectors to measure B-mode polarization, allowing researchers to map the large-scale structure of the universe. The team also aims to determine neutrino masses and study dark matter and dark energy.
Tropical Cyclone Hudhud is consolidating and getting more organized, with a developing eye. Warnings have been issued for heavy rainfall, storm surges, and high winds along the northern Andhra Pradesh coast and south Odisha coastline of eastern India.
Tropical Storm Hudhud formed on Oct. 8 in the Northern Indian Ocean after a period of dormancy, with maximum sustained winds near 45 knots. The Joint Typhoon Warning Center predicts the storm will strengthen into a hurricane and make landfall near Visakhapatnam on Oct. 10.
NASA's GOES-West satellite captured Tropical Storm Rachel, the 18th tropical depression of the Eastern Pacific. The storm took an oval shape due to wind shear, indicating a disturbance in its circulation. Forecasters predict strengthening over the next couple of days before weakening into a depression.
Typhoon Kalmaegi's center was spotted by NASA's Aqua satellite near northern Hainan Island, China. The storm is making landfall in Northern Vietnam, generating very rough surf and ocean swells up to 22 feet.
Tropical Storm Fengshen, approximately as long as Japan's main island, skitters the east coast with strong thunderstorms. The storm is expected to intensify into a typhoon and undergo extra-tropical transitioning as it moves away from Japan.
NASA's Aqua satellite captured remnants of Tropical Depression Dolly over northeastern Mexico on Sept. 3, showing a band of thunderstorms spiraling over the Texas/Mexico border. The TRMM satellite detected moderate to heavy rainfall in southern Texas due to low-to-mid-level moisture from Dolly's remnants.
Hurricane Marie reached Category 4 status on August 24, with maximum sustained winds of near 135 mph and a minimum central pressure of 944 millibars. The storm continued to cause dangerous surf along the west coast of Mexico, with swells affecting the southwestern coast and potentially life-threatening conditions expected.
Scientists have successfully used a protection effect to enhance the stability of a promising quantum system, allowing for longer storage times. This breakthrough opens up new applications for hybrid quantum systems and could lead to ultrafast quantum computers.
The Planck Telescope's most detailed map of the cosmic microwave background contains features that challenge the standard model of cosmology. By processing the data differently and including other effects, scientists have found that several anomalies disappear, but others may still persist.
Tropical Storm Iselle has developed powerful thunderstorms, including one with cloud top temperatures as cold as -63F/-52C, according to NASA's Aqua satellite data. The storm is expected to strengthen over the next couple of days due to favorable environmental conditions.
The Hurricane Imaging Radiometer (HIRAD) will fly aboard a NASA Global Hawk aircraft during the HS3 mission, providing unique observations of sea surface wind speed, temperature, and rain. HIRAD's data will advance understanding and predictability of hurricane intensity, helping to determine maximum wind speed and structure of the vortex.
Researchers from NIST and Caltech have created an atomic clock using a microcomb, enabling precise frequency control and conversion to microwave frequencies. The new design has the potential to be integrated into portable tools for calibrating telecommunications systems and improving radar navigation and scientific instruments.
Researchers have developed a method to stabilize microwave signals using laser beams as references, potentially replacing quartz crystals. This new technique, called electro-optical frequency division, enables stabilization of high-frequency signals with smaller devices, outperforming current electronic technology in some cases.
Tropical Storm Fausto strengthened quickly after forming as Tropical Depression Six-E on July 7. Satellite imagery shows the storm being pursued by a developing area of low pressure to its east, with NOAA's GOES-West satellite capturing the scene.
Tropical Cyclone Neoguri strengthened from a tropical storm into a supertyphoon between July 4 and July 7, with maximum sustained winds near 130 knots (149.6 mph). NASA satellites provided forecasters with visible, infrared, and microwave data on the powerful storm.
The release of worldwide maps of soil moisture by NASA's Aquarius instrument showcases how wetness of the land changes with seasons and weather phenomena. This data is essential for understanding the climate system and has potential applications in advancing climate models, weather forecasts, drought monitoring, and water management.
The BICEP2 collaboration has published nuanced findings on microwave sky patterns, suggesting possible primordial gravitational waves. However, they acknowledge the presence of galactic dust as a potential explanation for the signals.
Researchers at Chalmers University of Technology have developed a new technology that uses microwaves to quickly and accurately diagnose stroke patients. The system, called Strokefinder, has been shown to differentiate between bleeding strokes and clot-induced strokes with great certainty in clinical studies.
Researchers at Oregon State University have successfully produced high-quality nanoparticles using microwave-assisted heating in a continuous flow reactor. This technology has the potential to revolutionize electronics manufacturing by reducing costs and improving performance.
A tropical low pressure area in the Bay of Campeche is showing signs of development, with cloud-top temperatures near -63F (-52C). The system has a 50% chance for formation, threatening southeastern Mexico with heavy rains and life-threatening flash floods.
Northwestern University scientists have developed a compact, room-temperature terahertz radiation source, six times more efficient than previous systems. This breakthrough enables easier harnessing of terahertz waves, potentially leading to advances in biosensing, homeland security, and space research.
Tropical System 92B has weakened due to persistent easterly vertical wind shear, according to NASA's infrared data. The Joint Typhoon Warning Center downgraded the potential for significant tropical cyclone development within the next 24 hours to medium.
NASA's TRMM satellite observed strong thunderstorms and heavy rainfall in System 92B, a developing tropical low pressure area in the Bay of Bengal. The storm showed organized clouds and tall storms reaching heights of over 8.7 miles.
Researchers at Caltech found a way to sidestep quantum 'noise' that limits precision of ultrasensitive position measurements, enabling detection and avoidance of quantum fluctuations. The study provides a solution for rerouting some of the noise away from the measurement, allowing for increased sensitivity without compromising accuracy.
Researchers found weak gravitational lensing in CMB polarization data, allowing detailed maps of the universe and constraining neutrino mass estimates. The discovery provides a firm test for general relativity on cosmological scales.
Tropical Depression Peipah is expected to make landfall in eastern Visayas on April 12. The storm appeared disorganized, with a broad low-level circulation center and weakening deep convection.
The National Institute of Standards and Technology (NIST) has launched NIST-F2, an atomic clock that is three times more accurate than its predecessor, NIST-F1. The new clock will help improve technology innovations in fields like cellular telephones, GPS satellite receivers, and the electric power grid.
The Arctic melt season is growing longer by several days each decade, with an earlier start allowing the ocean to absorb more solar radiation. This trend is causing the sea ice cover to weaken, as thinner, younger ice becomes more prevalent.
A new approach converts weak microwave signals into visible light for clean detection and reduces noise by a thousand times. This all-optical detection method is the first to achieve this at room temperature.
The TRMM satellite observed heavy rainfall and towering thunderstorms around Tropical Storm Faxai, with rain falling at a rate of over 89 mm/hour. The storm is expected to move north and intensify before becoming extra-tropical.
NASA's TRMM satellite detected rising rainfall rates on February 27, indicating the birth of Tropical Storm Faxai. The storm formed over System 93W in the Northwestern Pacific, with maximum sustained winds near 35 knots.
Scientists from Moscow State University have made significant breakthroughs in generating stable femtosecond pulses and microwave signals using microresonators. These discoveries hold promise for compact and affordable optical pulse generators, critical for applications such as broadband spectroscopy, telecommunications, and astronomy.
Researchers at Duke University designed a power-harvesting device that efficiently captures microwave signals and converts them into electrical current. The device has an energy conversion rate of 37%, comparable to solar cells.
The team uses a powerful magnet and supercooled microwave receiver to detect faint interactions between axions and electromagnetic radiation. They aim to find cold dark matter axions in the Milky Way galaxy, which could make up 1/4 of the universe's mass.
Tropical Storm Krosa is intensifying as it approaches the northern Philippines, prompting warnings from PAGASA. The storm is expected to make a brief landfall over extreme northern Luzon on Oct. 31 before moving west into the South China Sea.
Physicists at NIST have successfully entangled a microscopic mechanical drum with electrical signals, confirming its potential as a quantum memory in future quantum computers. The experiment also marks the first-ever entanglement of a macroscopic oscillator, opening up new practical uses for the drum.