Electromagnetic Shielding (EM Shielding)
Definition - What does Electromagnetic Shielding (EM Shielding) mean?
Techopedia explains Electromagnetic Shielding (EM Shielding)
Many different types of electromagnetic shielding can be made from simple items like aluminum foil. Common examples of electromagnetic shielding include the interior of a microwave oven, which keeps radiation in, and shielded cabling, which also contains electromagnetic fields. Other kinds of electromagnetic shielding are sometimes called Faraday cages. These systems, such as the RFID-blocking tool mentioned above, block out electromagnetic fields from an interior space.