An indispensable reference book for anyone beginning their study in physics. The clear definitions of all the key terms and concepts makes understanding complex concepts a breeze. The brightly illustrated pages filled with useful diagrams make the topics easy to grasp. The book includes comprehensive cross-referencing to link related areas and a detailed index to guarantee easy reference. This reference book also includes rich media content with internet links to recommended websites. This great study aids contain topics arranged thematically so that words are explained in context. This is the ideal reference companion for students of physics and an essential study guide for school tests and standardized testing and examinations.