For the Love of Physics by Walter Lewin & Warren Goldstein

Author:Walter Lewin & Warren Goldstein
Language: eng
Format: epub, mobi
Publisher: Pocket Books
Published: 2011-03-25T16:00:00+00:00

CHAPTER 8

The Mysteries of Magnetism

For most of us magnets are just fun, partly because they exert forces that we can feel and play with, and at the same time those forces are completely invisible. When we bring two magnets close together, they will either attract or repel each other, much as electrically charged objects do. Most of us have a sense that magnetism is deeply connected to electricity—nearly everyone interested in science knows the word electromagnetic, for instance—but by the same token we can’t exactly explain why or how they’re related. It’s a huge subject, and I spend an entire introductory course on it, so we’re just going to scratch the surface here. Even so, the physics of magnetism can lead us pretty quickly to some eye-popping effects and profound understandings.

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