En route to better transformers

Researchers have found a way of looking inside the iron core of transformers. Transformers are indispensable in regulating electricity both in industry and in domestic households. The better their iron cores are magnetized, the less energy they lose and the more efficiently they work. The groundbreaking investigatory method of neutron grating interferometry developed at the PSI has opened up the possibility of observing magnetic domains at work as they establish magnetic fields inside the iron core. This is a significant step towards understanding how transformers work.

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