Barkhausen effect

1919

Barkhausen effect

The book of science

Tom Sharp

Heinrich Barkhausen electromagnetism

Barkhausen effect

Before Barkhausen

Explaining

Magnetic domains are too small and too much alike to see without a Kerr microscope, and domains are not the same as crystalline grains in a metal, but wouldn’t ancient makers of sword blades have had ideas about the alignments of iron crystals?

See also in The book of science:

Readings on wikipedia: