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เนื้อหาย่อ : beyond the wildest dreams of a mere decade ago. The progress has been so rapid in e electrical age. Electrical and electronic technology has some fields that projects still on the drawing boards have had to be discarded because e new development comes to light, making them obsolete before the completed. Those developments which have come to pass read like the "Science Fiction" of a few years back: Solar batteries power transmitters in orbiting satellites, elec- computers perform mathematical miracles in seconds, nuclear enery been successfully converted directly to electrical energy without the customary inter- mediate steam-turbine steps. But these advanced applications are not the only things subject to change. These new uses of electrical energy have made a new approach to electrical instruction all the more necessary. Not long ago, the direction of electrical current was taught in accordance with Franklin's notion that electricity moved from the positive to the negative terminal. Fifty years ago, teachers could have replaced this notion with the more accurate electron theory. Confirmed by basic experimentation, and reconfirmed in the success of practical devices built in accordance with the concept, this electron-flow idea is essential to a straightforward explanation of electronic devices. Since the electron theory is a concept basic to all electrical and electronic study, Alternating Current Fundamentals like its companion text, Direct Current Fundamentals by O. E. Loper, is based upon a sound grasp of the role of the electron. A prerequisite to this comprehensive presentation of alternating current is a thorough understanding of direct current circuits, instruments, machines, and control equip- ment. It is presumed that the student shall have had such basic groundwork before ceeding to the more complex and involved principles of atternating erial should bring the student to the threshold of electronics, eq Study ose principles essential to successful advanced study in th represents the second of a three-volume series intended to pr intensive background of fundamentals of direct current, alternating current, and s. Each shall have an accompanying manual of selected laborat ments. gether they provide basic instructional material for those who und, intensive, technical foundation in electricity and ele