I am aware the an EMP is an Electro Magnet Pulse and that it disables electronics, but I am unaware how it messes with electronic objects.
In: Technology
Magnetism and electricity are closely related and a magnetic pulse can generate an electric current in a wire, the longer the wire the more electricity. So electricity flowing strongly through a wire can cause a device to fail. https://youtu.be/fMaAr9Febl8
It’s a pulse of magnetism. This induces currents in wires it moves past, using the dynamo effect. These currents are not what the circuit is designed for, and high currents can easily harm delicate electronics.
On bicycles, there’s often a small device attached to the pedals or wheels. Everytime you pedal, it lights up a light, but there’s no battery involved. It’s because the pedal is attached to a magnet, and you spin that magnet near an electrical wire coil.
So we learn that every time a magnet, or a magnetic field, moves around a wire, there will be electricity moved inside that wire too. Moving magnetic fields generates electricity.
So an EMP just blast a huge wave of magnetic field to generate electricity in every single wire or metal component near it, which you can already guess, can cause horrible things. Electricity in the wrong place can shut down entire cities, cause explosions, trigger fatal reactions, and so on.
When planning for EMP, there is a device called a Faraday cage, which is super simple and cheap, just a simple metal box of cage, but it blocks all the electromagnetic wave that the EMP is emitting.
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