In What's In A Name? Ian Murray Tough examines the roots of etymology, with particular focus on surnames and their socio-geographical context. A fascinating and incisive study which may inspire others to conduct detective work into family history. This book explains the importance of names in our everyday lives, and their complexity, with regard to social and family history. It conveys subject matter associated with research into family history and its genealogy.
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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