On Sunday, February 28, 3 astronauts will perform the first in a pair of International Space Station spacewalks to ready the station for solar array upgrades. How to watch live. Source: https://earthsky.org/space/watch-iss-spacewalk-feb-mar-2021…
Tag: Magnet
Magnetic effect without a magnet
Electric current is deflected by a magnetic field—in conducting materials, this leads to the so-called Hall effect. This effect is often used to measure magnetic fields. A surprising discovery has now been made at TU Wien, in collaboration with scientists from the Paul Scherrer Institute (Switzerland), McMater University (Canada), and Rice University (U.S.): an exotic metal made of cerium, bismuth and…
Geomagnetic reversal linked to mass extinction
Scientists believe that a historic reversal of the Earth’s magnetic field may have proven catastrophic. The current orientation of our planet’s magnet… Source: https://www.unexplained-mysteries.com/news/344093/geomagnetic-reversal-linked-to-mass-extinction…
Galaxies have magnetic fields, too! Images here
Until recently, magnetic fields in the outskirts of galaxies were too faint to be detected. Although it’s still not clear what causes them or how they’re maintained, astronomers have started to create images of their observations of galaxies’ magnetic fields producing beautiful aurora-like effects. See them here. Source: https://earthsky.org/space/images-of-magnetic-fields-in-galaxies…
Astronomers find signature of magnetar outbursts in nearby galaxies
Apart from black holes, magnetars may be the most extreme stars in the universe. With a diameter less than the length of Manhattan, they pack more mass than that of our sun, wield the largest magnetic field of any known object—more than 10 trillion times stronger than a refrigerator magnet—and spin on their axes every few seconds. Source: https://phys.org/news/2021-01-astronomers-signature-magnetar-outbursts-nearby.html…
Spin wave detective story redux: Researchers find more surprising behavior in a 2-D magnet
A few months ago, a team of scientists from the National Institute of Standards and Technology (NIST) reported something surprising about a 2-D magnetic material: Behavior that had long been presumed to be due to vibrations in the lattice—the internal structure of the atoms in the material itself—is actually due to a wave of spin oscillations. …
Scientists discover a topological magnet that exhibits exotic quantum effects
An international team led by researchers at Princeton University has uncovered a new class of magnet that exhibits novel quantum effects that extend to room temperature. …
New Free Speech Site Gets in a Tangle Over … Free Speech
The social network bills itself as a ‘no censorship’ bastion — but it’s already had to remind users what is and isn’t allowed. From a report: In recent weeks, Donald Trump has started having his tweets factchecked and published with disclaimers when they contain misleading information. Katie Hopkins, the woman who once compared migrants to cockroaches and called for a “final…
New ‘whirling’ state of matter discovered in an element of the periodic table
The strongest permanent magnets today contain a mix of the elements neodymium and iron. However, neodymium on its own does not behave like any known magnet, confounding researchers for more than a half-century. Physicists at Radboud University and Uppsala University have shown that neodymium behaves like a self-induced spin glass, meaning that it is composed of a rippled sea of many…
Mysterious inscribed cubes discovered in river
A magnet fisherman in England has reeled in a haul of 60 lead cubes inscribed with strange symbols. Will Read had been magnet fishing with his two you… Source: https://www.unexplained-mysteries.com/news/336989/mysterious-inscribed-cubes-discovered-in-river…