Organic spectroscopy bridges both physics and chemistry, but Ning (chemistry, Tsinghua U., Beijing) finds that books by physicists are hard for chemists to understand, and those by chemists neglect the physical basis of the technology. So he offers a text that includes both, using simple terms for the physics that are comprehensible to graduate students and researchers in chemistry. Both of the two editions of the Chinese original from which this is translated won awards as teaching material.