Oh yes, I well remember the "degauss" button on CRT monitors. We had one where it was basically a mini EMP and would make the images on nearby monitors quiver a

Oh yes, I well remember the "degauss" button on CRT monitors. We had one where it was basically a mini EMP and would make the images on nearby monitors quiver as well. Fun times. I know a magnetic field was being retained somewhere, just wasn't sure which component it was.