Electromagnetism: Feynman's Physics Explained
Matter is held together by enormous electrical forces, but they are so perfectly balanced between positive protons and negative electrons that we never feel them. Magnetism is a subtler effect — in fact a relativistic consequence of electricity. When charges move, their electric fields as seen by a moving observer are altered into what we call a magnetic field. Electricity and magnetism are not two things but two aspects of a single, unified electromagnetic field.
The big idea
Electricity and magnetism are one unified force.
Think about it
If matter is full of huge electric forces, why don't you feel them in everyday objects?
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