waves
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Science
Lawn on the Waves: Isotope analysis reveals prehistoric Greek diet
PCA of humans and related animals from Franchthi. Credit: PLOS ONE (2025). DOI: 10.1371/journal.pone.0310834 Simon Fraser University, the Hellenic Ministry of Culture and the University of Bologna conducted an isotopic study of the dietary patterns of Mesolithic and Neolithic humans at the Franhiti Cave in Greece. The report confirms a land-based diet with negligible consumption of marine resources during these…
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Environment
One person killed in Ecuador, ports closed in Peru due to huge waves
Huge waves are crashing onto the coasts of Ecuador and Peru. Huge waves of up to 13 feet (4 meters) pounded the coasts of Ecuador and Peru, closing numerous ports and killing at least one person on Saturday, authorities said. Piers and public squares were submerged in some parts of Peru, and residents were evacuated to higher ground, footage from…
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Physics
Twisted Edison: A nanoscale curled filament produces light waves that rotate as they travel.
The light bulb’s Edison-style filament is twisted on a microscale, similar to the strands Jun Lu holds next to the demonstration. When the length of each twist matches the wavelength of the light emitted by the filament, the light waves rotate as they travel through space. Credit: Brenda Ahearn/Michigan Engineering Bright, twisted light can be produced using technology similar to…
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Environment
Decoding the effects of gravitational waves on the atmosphere using high-resolution climate simulations
As seen from the International Space Station, when humid air encounters an imbalance in air density, gravitational waves appear over Lake Superior, causing the airflow to oscillate up and down. Credit: NASA/ISS Researchers from Stanford University, the European Center for Medium-Range Weather Forecasts (ECMWF), and Oak Ridge National Laboratory are conducting a summit at the institute’s Summit to better understand…
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Physics
Scientists use matter waves to reveal new collective behavior in quantum optics
View of an array of matter wave emitters held in an optical lattice tube (atomic excitation in red, emitted matter waves in blue, effective vacuum coupling in green) and directional superradiation data. Credit: Alfonso Lanuza A research team led by Dr. Dominique Schnaebel, professor in the Department of Physics and Astronomy, has discovered a new regime for cooperative radiation phenomena,…
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Physics
Kinetic Alfvén waves may be the key to the mystery of solar coronal heating
Geometry of obliquely propagating Alfvén waves. This schematic diagram shows the fitted geometry of a KAW in a circular cross-section solar flux tube loop of height h and radius a. Credit: Scientific Reports (2024). DOI: 10.1038/s41598-024-77975-6 Saeed Ayaz, a researcher at the University of Alabama in Huntsville (UAH), published a paper in Scientific Reports based on a first-of-its-kind study examining…
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Nanotechnology
Control of sound waves through Klein tunnels improves filtering of acoustic signals
Artistic representation of Klein tunnels in phononic crystals. The snowflake pattern represents an etched aluminum nitride membrane that guides sound waves, and the probe symbolizes TMIM technology, which visualizes the movement of waves. Red and blue Dirac cones highlight the transmission of waves through energy barriers without loss. Credit: Yue Jiang In the context of sensory modalities, the eyes function…
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Environment
Studies have shown that South America is facing an increased risk of heat waves, droughts and fires.
Credit: CC0 Public Domain In parts of South America, the number of extremely hot, dry and fire-prone days per year has tripled since 1970. South America is warming at a similar rate to the global average. However, some parts of the subcontinent are at increased risk of multiple simultaneous extreme weather events. These compound extreme weather events could have amplified…
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