Ask HN: What is a nature of a magnetic field
There are no magnets only electricity.<p>When electricity moves fast (close to the speed of light) <i>relativistic</i> effects occur which cause electric force to appear like (what we call) magnetic force.<p>So the real question is &quot;Why do electrons use to react to each other?&quot;<p>And the answer is, no one knows, no one can know, the best we can do is describe the behavior.