CHAPTER 2
Light and Other Waves
When someone says “waves,” the first thing that may come to mind is the kind of waves that crash onto a beach. Water waves (and waves in air) are actually pretty complicated, because the waves are moving over complex terrrain, experiencing friction and effects of the water’s viscosity and a lot of other things. The equations that govern water waves and the interactions among them require that you know about a type of math called partial differential equations, which even scientists and engineers might not work with much until graduate school.
Fortunately, though, light waves and other electromagnetic radiation ...
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