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Tag Archives: waves

Earth’s inner core is solid, ‘J waves’ suggest

A new study by researchers at The Australian National University (ANU) could help us understand how our planet was formed. Associate Professor Hrvoje Tkalčić and PhD Scholar Than-Son Phạm are confident they now have direct proof that Earth’s inner core is solid. They came up with a way to detect ...

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Space sound waves around Earth: Electrons whistle while they work?

Space is not empty, nor is it silent. While technically a vacuum, space nonetheless contains energetic charged particles, governed by magnetic and electric fields, and it behaves unlike anything we experience on Earth. In regions laced with magnetic fields, such as the space environment surrounding our planet, particles are continually ...

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Ancient humans arrived in South America in multiple waves

Analysis of ancient human skulls found in southeastern Brazil are providing new insights into the complex narrative of human migration from our origins in sub-Saharan Africa to the peopling of the Americas tens of thousands of years later. The many differences in cranial morphology, the study of skull shape, seen ...

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Gravity Waves Might Be Lighting Up Venus’ Atmosphere

Look, Venus is just a weird planet. “With Venus and Earth, it’s like you had two chocolate cake mixes and ended up with one chocolate cake and one lemon cake,” says Ellen Stofan, NASA’s former chief scientist. Venus’ lemony nonsense includes a runaway greenhouse effect, crazy-high surface temperature and pressure, ...

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A Year in Dark Energy, Antimatter, and Gravitational Waves

2016 held some wonderful physics moments—hello gravitational waves! Other moments were experimentally impressive, like shining a laser beam through antimatter, but don’t have the same oomph as colliding black holes. And some were just downright deflating: Dark matter still won’t show itself. Still, every experimental let-down opens up new avenues ...

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Dances with waves: Breakthrough in moving small objects using acoustics

Researchers of Aalto University have made a breakthrough in controlling the motion of multiple objects on a vibrating plate with a single acoustic source. By playing carefully constructed melodies, the scientists can simultaneously and independently move multiple objects on the plate towards desired targets. This has enabled scientists, for instance, ...

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‘Sticky waves: ‘ molecular interactions at the nanoscale

Like the gravitational forces that are responsible for the attraction between the Earth and the moon, as well as the dynamics of the entire solar system, there exist attractive forces between objects at the nanoscale. These are the so-called van der Waals forces, which are ubiquitous in nature and thought ...

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Even Einstein Didn’t Think Gravitational Waves Existed

“There are no gravitational waves … ” … “Plane gravitational waves, traveling along the positive X-axis, can therefore be found … ” … “ … gravitational waves do not exist … ” … “Do gravitational waves exist?” … “It turns out that rigorous solutions exist … ” Quanta Magazine About ...

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