![[magnetic fields from elevators.jpg]] Source: [[Restoring resolution of electron microscopy]] by Robert Christy of [[Spicer Consulting]] ![[EMI-Interference-Graphic-1.jpg]] Source: [Vibration Engineering Consultants](https://www.vibeng.com/blog/emi-interference-understanding-and-mitigate-the-ac-and-dc-emi-interference)