Balancing an egg: How scientists built a floating magnet to hunt dark matter

Balancing an egg: How scientists built a floating magnet to hunt dark matter Key takeaways Powered by Yahoo Scout. Yahoo is using AI to generate key points from this article. This means the info may not always match what’s in the article. Reporting mistakes helps us improve the experience. Researchers from Peking University and Germany's Johannes Gutenberg University Mainz have developed a Levitated Magnet Magnetometer that can detect magnetic signals a billion times weaker than Earth's field, potentially widening the search for dark matter and revolutionizing brain activity monitoring. The Levitated Magnet Magnetometer, or LeMaMa, works by suspending a tiny sensing magnet in mid-air with the help of a second magnet to counteract gravity, allowing for stable measurements of magnetic fields down to the femtotesla level without the need for cryogenic temperatures or heavy shielding.