A detailed experimental analysis explains the forces by which a spinning magnet can cause another magnet to levitate in midair.

Magnetic levitation is common in floating trains and high-speed machinery, but two years ago, a new type of levitation was discovered that uses a rapidly rotating magnet to suspend a second magnet in the air. Researchers have now clarified that this phenomenon originates from slight tilts in the magnetic axes of the magnets relative to their rotational axes [1]. The research team’s experimental and theoretical work reveals surprises about how magnetic levitation works. The new technique could one day be used as a contact-free tool for manipulating objects.

If you bring together two toy magnets with their north poles facing each other, they will repel each other. You might be tempted to try and use that repulsion to counter the force of gravity by placing one magnet beneath the other. However, common experience shows that this balancing act is unstable.

Lab experiments and theoretical models elucidate how chains of light-harvesting bacteria assemble into various density-dependent structures.

Lawrence Livermore National Laboratory researchers have adapted their novel metasurface process to create an all-glass metasurface with birefringence, or dual refraction, properties. Learn how this achievement could transform waveplate technology for high-power laser systems such as the National Ignition Facility:

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Tesla’s Cybertruck shows off its off-road capabilities on a notoriously tough Baja track.

Wide distribution of findings shows how analytical choices drive conclusions.

Saturday’s annular ‘ring of fire’ eclipse will be visible in 50 states, but only nine will get the full show. Use these tips to watch in person or online.

🚨 Malicious NuGet package distributing SeroXen RAT targets. NET developers. The malicious user behind this package has released 6 other suspicious packages, with 2.1 million downloads.

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David Baillot.

Aiming to make the process more efficient and convenient, a team of researchers at the University of California San Diego have developed electronic “stickers” that help to measure this phenomenon.