Story thread · 2 reports / 2 sources

Tiny floating magnet detects ultrafaint magnetic fields at room temperature

phys.org · 4dShare

Measuring faint magnetic fields is useful in a number of areas, including mapping brain activity, monitoring hearts and probing fundamental physics. Typically, picking up such weak signals requires expensive or bulky equipment, such as liquid-helium cooling tanks or specially shielded rooms that block out Earth's magnetic field.

First report: Levitating sensor for magnetic fields could detect ultrafaint brain activity — nature.com, 5d