"There are various ways in which skeins of tendon rope can be used in weaponry, but by far the best was the device known.to the Romans as the ballista." (like a Spanish windlass - which is neither Spanish, nor a windlass). To build the catapult, the bent arms of the bow were replaced with beams thrust through twisted skeins of tendon. The bow is the most efficient method of converting stored energy into the energy of the projectile. In it he covers energy storage as strain energy.
"synopsis" may belong to another edition of this title.There is a very good book you may find helpful. Without jargon or over-simplification, Structures surveys the nature of materials and gives sophisticated answers to the most naive questions, opening up the marvels of technology to anyone interested in the foundations of our everyday lives. If you are building a house, a sailboat, or a catapult, here is a handy tool for understanding the mechanics of joinery, floors, ceilings, hulls, masts or flying buttresses.
For architects and engineers there are cogent explanations of the concepts of stress, shear, torsion, fracture, and compression, and chapters on safety design and the relationship of efficiency to aesthetics.
Gordon strips engineering of its technical mathematics and communicates the theory behind the structures of a wide variety of materials.Chapters on ”How to Design a Worm” and ”The Advantage of Being a Beam” offer humorous insights into human and natural creation. In a style that combines wit, a masterful command of his subject, and an encyclopedic range of reference, J. Structures: Or Why Things Don't Fall Down is an informal explanation of the basic forces that hold together the ordinary and essential things of this world from buildings and bodies to flying aircraft and eggshells. For anyone who has ever wondered why suspension bridges don't collapse under eight lanes of traffic, how dams hold back or give way under thousands of gallons of water, or what principles guide the design of a skyscraper, a nightgown, or a kangaroo, this book will ease your anxiety and answer your questions.
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