How do aluminum coils protect against electromagnetic interference?

Aluminum coils protect against electromagnetic interference (EMI) through a process known as electromagnetic shielding. Aluminum, being a conductive material, can reflect and absorb EMI, preventing it from penetrating the protected area. When an aluminum coil is used as a shield, it creates an electric field that interacts with the EMI, either reflecting the interference back or absorbing it, thus reducing its impact on sensitive electronic equipment. The high conductivity of aluminum also allows it to distribute the EMI evenly across its surface, minimizing the effect of any single point of entry. This shielding is crucial in various applications, such as in electronic devices and communication systems, to ensure reliable performance and data integrity.