This must-have third revised and newly expanded edition of the only single reference source for information about state symbols features over 300 information updates plus three new chapters, updated license plate illustrations, and a newly formatted design for ease of use. Libraries that hold earlier editions of this work need this edition to keep their information on the states and territories current. With the addition of new chapters on state and territory universities, state and territory governors throughout U.S. history, state professional sports teams, and a complete revision of the chapter on state and territory fairs and festivals, the work now totals 17 chapters of essential information that is a treasure trove for students. This completed redesigned reference work features chapters on state and territory names and nicknames, mottoes, seals, flags, capitals, flowers, trees, birds, songs, legal holidays and observances, license plates, postage stamps, miscellaneous designations, fairs and festivals, universities, governors, professional sports teams, and a bibliography of state and territory histories. The work features full-color illustrations of every state and territory seal, flag, flower, tree, bird, commemorative postage stamp, and license plate (updated for this edition).
Linear electric actuators (LEAs) and linear electric generators (LEGs) are widely used electromagnetic devices. This book deals with LEAs that convert electric energy into controlled mechanical motion of limited travel and LEGs that transform mechanical energy into electric energy. Examples range from loudspeakers and microphones to magnetically levitated material transfer in ultraclean rooms. Much of the literature on linear actuators and generators covers the principles of operation and performance calculations of these devices. Little has been published on their control or on detailed design methodologies. This book presents the first unified treatment of the subject, including the construction, operation, control and design of LEAs and LEGs. Chapters describe linear induction, permanent-magnet, linear reluctance, switched reluctance, and linear stepper actuators, as well as various types of linear electric generators. The text is amply illustrated with numerous design examples.
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