Maxwell's Equations: Crash Course Physics #37
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By the 19th century, we were pretty sure there was something was going on between electricity and magnetism. First, in the early 1800s, Michael Faraday showed us how a changing magnetic field induces an electromotive force, or emf, resulting in an electric current. He also found that electric fields sometimes act like magnetic fields, and developed equations to calculate the forces exerted by both. In the mid-1800s, Scottish physicist James Maxwell thought something interesting was going on there, too. So he decided to assemble a set of equations that held true for all electromagnetic interactions. And he did a great job of it, compiling a set of equations as critical to physics as Newton’s laws of motion. And while he was coming up with his all-encompassing equations, Maxwell predicted the existence of electroma...
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By the 19th century, we were pretty sure there was something was going on between electricity and magnetism. First, in the early 1800s, Michael Faraday showed us how a changing magnetic field induces an electromotive force, or emf, resulting in an electric current. He also found that electric fields sometimes act like magnetic fields, and developed equations to calculate the forces exerted by both. In the mid-1800s, Scottish physicist James Maxwell thought something interesting was going on there, too. So he decided to assemble a set of equations that held true for all electromagnetic interactions. And he did a great job of it, compiling a set of equations as critical to physics as Newton’s laws of motion. And while he was coming up with his all-encompassing equations, Maxwell predicted the existence of electroma...
