This introduction to heat transfer offers advanced undergraduate and graduate engineering students a solid foundation in the subjects of conduction, convection, radiation, and phase-change, in addition to the related topic of mass transfer. A staple of engineering courses around the world for more than three decades, it has been revised and updated regularly by the authors, a pair of recognized experts in the field. The text addresses the implications, limitations, and meanings of many aspects of heat transfer, connecting the subject to its real-world applications and developing students' insight into related phenomena.
Three introductory chapters form a minicourse in heat transfer, covering all of the subjects discussed in detail in subsequent chapters. This unique and effective feature introduces heat exchangers early in the development, rather than at the end. The authors also present a novel and simplified method for dimensional analysis, and they capitalize on the similarity of natural convection and film condensation to develop these two topics in a parallel manner. Worked examples and end-of-chapter exercises appear throughout the book, along with well-drawn, illuminating figures.

Invention -that single leap of a human mind that gives us all we create. Yet we make a mistake when we call a telephone or a light bulb an invention, says John Lienhard. In truth, light bulbs, airplanes, steam engines-these objects are the end results, the fruits, of vast aggregates of invention. They are not invention itself. In How Invention Begins, Lienhard reconciles the ends of invention with the individual leaps upon which they are built, illuminating the vast web of individual inspirations that lie behind whole technologies. He traces, for instance, the way in which thousands of people applied their combined inventive genius to airplanes, railroad engines, and automobiles. As he does so, it becomes clear that a collective desire, an upwelling of fascination, a spirit of the times-a Zeitgeist -laid its hold upon inventors. The thing they all sought to create was speed itself. Likewise, Lienhard shows that when we trace the astonishingly complex technology of printing books, we come at last to that which we desire from books-the knowledge, the learning, that they provide. Can we speak of speed or education as inventions? To do so, he concludes, is certainly no greater a stretch than it is to call radio or the telephone an "invention." Throughout this marvelous volume, Lienhard illuminates these processes, these webs of insight or inspiration, by weaving a fabric of anecdote, history, and technical detail-all of which come together to provide a full and satisfying portrait of the true nature of invention.

Modern is a word much used, but hard to pin down. In Inventing Modern, John H. Lienhard uses that word to capture the furious rush of newness in the first half of 20th-century America. An unexpected world emerges from under the more familiar Modern. Beyond the airplanes, radios, art deco, skyscrapers, Fritz Lang's Metropolis, Buck Rogers, the culture of the open road--Burma Shave, Kerouac, and White Castles--lie driving forces that set this account of Modern apart.
One force, says Lienhard, was a new concept of boyhood--the risk-taking, hands-on savage inventor. Driven by an admiration of recklessness, America developed its technological empire with stunning speed. Bringing the airplane to fruition in so short a time, for example, were people such as Katherine Stinson, Lincoln Beachey, Amelia Earhart, and Charles Lindbergh. The rediscovery of mystery powerfully drove Modern as well. X-Rays, quantum mechanics, and relativity theory had followed electricity and radium. Here we read how, with reality seemingly altered, hope seemed limitless.
Lienhard blends these forces with his childhood in the brave new world. The result is perceptive, engaging, and filled with surprise. Whether he talks about Alexander Calder (an engineer whose sculptures were exercises in materials science) or that wacky paean to flight, Flying Down to Rio, unexpected detail emerges from every tile of this large mosaic.
Inventing Modern is a personal book that displays, rather than defines, an age that ended before most of us were born. It is an engineer's homage to a time before the bomb and our terrible loss of confidence--a time that might yet rise again out of its own postmodern ashes.

Millions of people have listened to John H. Lienhard's radio program "The Engines of Our Ingenuity." In this fascinating book, Lienhard gathers his reflections on the nature of technology, culture, and human inventiveness. The book brims with insightful observations. Lienhard writes that the history of technology is a history of us--we are the machines we create. Thus farming dramatically changed the rhythms of human life and redirected history. War seldom fuels invention--radar, jets, and the digital computer all emerged before World War II began. And the medieval Church was a driving force behind the growth of Western technology--Cistercian monasteries were virtual factories, whose water wheels cut wood, forged iron, and crushed olives. Lienhard illustrates his themes through inventors, mathematicians, and engineers--with stories of the canoe, the DC-3, the Hoover Dam, the diode, and the sewing machine. We gain new insight as to who we are, through the familiar machines and technologies that are central to our lives.