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The wind is a fickle source of power. Windspeeds are frequently too low to be of any practical use, so that windpower has generally remained a marginal resource. Since the inception of windpower around 1000 AD, technology has been deployed to obtain the most economical power from wind. The author traces its technical evolution, concentrating on the growth in understanding of wind and charting crucial developments in windmill design. The history of the windmill is focused on North Western Europe, drawing on the origins of the first horizontal windmills in Persia, Tibet and China. Industrial applications such as in textiles, papermaking and mining are examined. Gradually, windmills were improved but were finally eclipsed by steam engines in the nineteenth century due to increased levels of industrialisation. The book concludes with a look at the recent re-emergence of windpower as a viable source of power in the wake of the energy crisis.
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Dr. Bennett traces the growing awareness of the importance and significance of the concept of feedback in engineering and details the technical developments that contributed to this awareness. There follows an account of the development of steam and hydraulic servomechanisms and their application to the control of ships and aircraft.
The book highlights especially the Marines' roles as guards against mutiny and desertion and as an imperial 'rapid reaction force' and provides details of the many and varied actions in which they were involved, worldwide.
“Say what they will, this war has been the biggest job of its sort that has been done in this world—nothing like it has gone before.” So stated Ulysses S. Grant to an English visitor after the American Civil War. The fall of Richmond was the final key to the demise of the Confederacy. This history and analysis of that campaign was written just a few years after the war but is still of great interest to the student of the Civil War. For less than you'd spend on gas going to the library, this long out-of-print volume is available as an affordable, well-formatted book for e-readers and smartphones. Be sure to LOOK INSIDE by clicking the cover above or download a sample.
Like her more famous brother William, Dorothy Wordsworth was also an important writer. Yet her work has found a wide readership only in recent years. Appearing in 1987, the first edition of this book was the first full-length scholarly study of the author and was also the first to collect her poems, discovered at Dove cottage and in other libraries. This new edition adds critical readings based on the latest research into Wordsworth's life and work and will further the argument for her place among the important writers of Romanticism.