HOW DID WE FIND OUT ABOUT LASERS?

Lasers, once over lightly—from wavelengths, colors, energy, and excited atoms to CD players and optical fiber. Mostly coherent, though sometimes too terse to be clear (e.g., in describing the interaction between photons and atoms). Odd phonetics (waves = "wavez"—rhymes with Chavez?); indifferent illustrations, some miscaptioned. Serviceable; current. Index.