In a recent breakthrough, researchers have discovered a way to control magnetic fields with light. This technique is capable of generating magnetic fields with an accuracy of just one part in a trillion. This ability to control magnetic fields optically could have a wide range of applications, from improved imaging to creating next-generation electronics. This new technique, developed by a team of researchers from the University of Cambridge, could revolutionize the way we interact with magnetic fields.

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source: Phys.org