What is electromagnetic interference?
Electromagnetic interference (EMI) is a common problem which occurs with electronic devices when the performance of a device is disturbed or interrupted by electromagnetic radiation or electromagnetic conduction. The source of EMI can be natural or artificial in origin, and it can become a very serious problem in some situations. In addition to appearing accidentally, electromagnetic radiation can also be created deliberately, as is done by military aircraft which wish to jam the electronic signals of enemy forces. Solar flares and the Northern Lights are two common natural causes of electromagnetic interference. Both of these phenomena cause radiation which can interfere with electronic devices. Many people with radios have noted that sometimes the signal experiences a profound decline in quality as the result of increased solar activity, making it difficult to hear radio stations through static and other signal interruptions. Solar activity can also disrupt the function of satellites
