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Electromagnetism introduction

Photo © Exploratorium
Photo © Exploratorium
Prepare to be shocked at how strong your attraction to these activities might be. They all explore electromagnetism, the area of physics concerned with the interaction of electricity and magnetism—also known as the science of electromagnetic fields. It’s a push me–pull you kind of relationship, where a magnetic field is produced by the motion of electric charges, and electricity is produced by changes in a magnetic field. You can’t have one without the other.
Radio waves, infrared waves, ultraviolet waves, and x-rays all exist on the electromagnetic spectrum, with their own unique wavelength and frequency. In our day-to-day lives, electromagnetism powers things like motors, CT scans—even the human brain.
Try the interactive science "snacks" that follow and discover the pull of electromagnetism.

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