Have you ever wondered why levers and pulleys make it easy to lift heavy objects? Or thought about what it is that makes a combustion engine work?The Book of Basic Machines will give you the information you need to understand key concepts, techniques, components, and much more. Designed and prepared by the Naval Education and Training Program Development Center for naval training, and taught widely in technical school across the country, the manual covers the theory and application of many of the most important mechanical ideas. Concepts build effortlessly from one chapter to the next. Clear explanations, illuminating examples, and over 200 skillfully rendered diagrams, cross-sections, and illustrations make it remarkably easy for readers of any level to understand the fascinating inner-workings of basic machines. The Book of Basic Machines is an invaluable resource for mechanical engineering students looking to learn the basics, working engineers wanting to brush up on some theory, or hobbyists who simply want to know how things work. Simply put, this book is required reading for anyone interested in machines. From the basics of simple levers to the principles of the internal combustion engine, The Book of Basic Machines covers every aspect of basic machinery.
The United States Department of the Navy (DoN) was established by an Act of Congress on April 30, 1798, to provide a government organizational structure to the United States Navy, the United States Marine Corps and, when directed by the President (or Congress during time of war), the United States Coast Guard, as a service within the Navy, though each remain independent service branches. The Department of the Navy was an Executive Department and the Secretary of the Navy was a member of the President's cabinet until 1949, when amendments to the National Security Act of 1947 changed the name of the National Military Establishment to the Department of Defense and made it an Executive Department. The Department of the Navy then became, along with the Department of the Army and Department of the Air Force, a Military Department within the Department of Defense: subject to the authority, direction and control of the Secretary of Defense.