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Este libro expone la Historia de la Ingeniería Eléctrica cronológicamente para reflejar la relación temporal entre las diferentes teorías, los descubrimientos y las invenciones de la tecnología y dar al conjunto un sentido evolutivo. La obra contiene alrededor de 1.300 entradas con las que se pretende mostrar el progreso de la Ingeniería Eléctrica en todo su conjunto; es decir, también incluye todas las especialidades de la Electricidad, como el Electromagnetismo, la Electrónica, las Comunicaciones, la Informática, etc. Es de destacar que, cuando las entradas ingresadas en el libro se refieren a inventos, se ha incluido el nombre del autor, el número de la patente, la fecha de solicitud, la fecha de concesión y la denominación correspondiente. Esta forma de proceder facilita la comprobación de la prioridad de los inventos. También hay que señalar que cuando se reseña algún descubrimiento o invención, se suele dar una explicación somera de su significado para facilitar al lector la comprensión y utilidad del mismo. En algunos casos, también se ha incluido una breve reseña de la vida del científico o inventor, para comprender el contexto en el que desarrollaron sus investigaciones. El libro pretende servir de estímulo a los científicos, ingenieros, técnicos, estudiantes de Ciencias e Ingeniería y apasionados por la cultura, para profundizar en la historia de los progresos científicos de la Ingeniería Eléctrica y para que conozcan el origen de muchos dispositivos que utilizan en su vida cotidiana, lo que les ayudará a encender la llama de la pasión por el conocimiento.