Tag: Waves

Free Download Chinese Hordes and Human Waves: A Personal Perspective of the Korean War 1950-1953 By Brigadier Brian Parritt
2011 | 224 Pages | ISBN: 1848846495 | EPUB | 4 MB
The North Koreans’ attack on their Southern neighbors shocked and surprised the World. The conflict rapidly escalated with China soon heavily involved on one side and the United States and United Nations on the other.The author, then a young Gunner officer, found himself in the midst of this very nasty war. He describes first hand what it was like to be at the infamous Battle of the Hook, where UN troops held off massed attacks by the Communists. Few outside the war zone realized just how horrific conditions were.As a qualified Chinese interpreter and, later, a senior military intelligence officer, Parritt is well placed to analyze why the Commonwealth got involved, the mistakes and successes and the extreme risk that the war represented.This is not only a fine memoir but a unique insight into a forgotten War.

Free Download Electroacoustic Waves in Piezoelectric Layered Composites
English | 2023 | ISBN: 3031267303 | 363 Pages | PDF EPUB (True) | 32 MB
This book deals concisely and coherently with various issues related to electroacoustic waves in piezoelectric layered composites.Starting with the basic linear equations and relations of electromagnet elasticity of homogeneous anisotropic piezoelectric media, the book considers the conditions for possible field or partial conjugation of physical and mechanical fields at the junction of two homogeneous media with geometrically homogeneous surfaces. The variety of electromechanical boundary conditions and the separation of plane and anti-plane fields of elastic deformation in homogeneous piezoelectric crystals are discussed.Then, the statements of the electroacoustic problem in piezo textures are studied and a layered piecewise-homogeneous piezoelectric waveguide is introduced, with non-acoustic contact between different piezoelectric layers.Non-acoustic contact between different piezoelectric layers can lead to the propagation of a hybrid of electroactive waves of plane and anti-plane elastic deformations.In the last part of the book, the problem of controlling electroacoustic waves in a waveguide is formulated. A method for solving problems of control of electroacoustic waves by non-contact surface action is proposed.

Free Download To Rule the Waves: How Control of the World’s Oceans Shapes the Fate of the Superpowers by Bruce Jones
English | September 14, 2021 | ISBN: 1982127252 | 400 pages | PDF | 5.97 Mb
From a brilliant Brookings Institution expert, an "important" (The Wall Street Journal) and "penetrating historical and political study" (Nature) of the critical role that oceans play in the daily struggle for global power, in the bestselling tradition of Robert Kaplan’s The Revenge of Geography.

Free Download Gravitational Waves Explained (The Mysteries of Space) by Richard Gaughan
English | December 15th, 2018 | ISBN: 197850456X, 1978505574 | 80 pages | True EPUB | 10.54 MB
In September of 2015, the scientific world was buzzing: gravitational waves had been detected. It was a dramatic and conclusive demonstration of Einstein’s theory of general relativity, the most complex and far-reaching theory in the history of physics. Through detailed diagrams, relatable analogies, and informative sidebars, this text cuts through the complexity and sophistication, providing an accessible introduction to the physics of waves, the implications of general relativity, and the ways in which gravitational waves can bring new understanding of the universe around us.