A History of Inventions, Discoveries, and Origins
Title | A History of Inventions, Discoveries, and Origins PDF eBook |
Author | Johann Beckmann |
Publisher | |
Pages | 574 |
Release | 1846 |
Genre | |
ISBN |
History of Inventions, Discoveries, and Origins, Vol. 2 (Classic Reprint)
Title | History of Inventions, Discoveries, and Origins, Vol. 2 (Classic Reprint) PDF eBook |
Author | John Beckmann |
Publisher | |
Pages | 576 |
Release | 2015-07-03 |
Genre | History |
ISBN | 9781330644164 |
Excerpt from History of Inventions, Discoveries, and Origins, Vol. 2 Although the plan of this new edition of Beckmann's 'History of Inventions and Discoveries' was to confine it to the subjects treated of in the original work, yet we feel it imperative to make an exception in favour of the Steam-Engine, the most important of all modern inventions. The power of steam was not entirely unknown to the ancients, but before the aera rendered memorable by the discoveries of James Watt, the steam-engine, which has since become the object of such universal interest, was a machine of extremely limited power, inferior in importance and usefulness to most other mechanical agents used as prime movers. Hero of Alexandria, who lived about 120 years before the birth of Christ, has left us the description of a machine, in which a continued rotatory motion was imparted to an axis by a blast of steam issuing from lateral orifices in arms placed at right angles to it. About the beginning of the seventeenth century, a French engineer, De Caus, invented a machine by which a column of water might be raised by the pressure of steam confined in the vessel, above the water to be elevated; and in 1629, Branca, an Italian philosopher, contrived a plan of working several mills by a blast of steam against the vanes; from the descriptions, however, which have been left us of these contrivances, it does not appear that their projectors were acquainted with those physical properties of elasticity and condensation on which the power of steam as a mechanical agent depends. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."
The Invention of the White Race, Volume 2
Title | The Invention of the White Race, Volume 2 PDF eBook |
Author | Theodore W. Allen |
Publisher | Verso Books |
Pages | 404 |
Release | 2014-04-29 |
Genre | Social Science |
ISBN | 1781689709 |
On the steps of the Lincoln Memorial in 1963, Martin Luther King outlined a dream of an America where people would not be judged by the color of their skin. That dream has yet to be realized, but some three centuries ago it was a reality. Back then, neither social practice nor law recognized any special privileges in connection with being white. But by the early decades of the eighteenth century, that had all changed. Racial oppression became the norm in the plantation colonies, and African Americans suffered under its yoke for more than two hundred years. In Volume II of The Invention of the White Race, Theodore Allen explores the transformation that turned African bond-laborers into slaves and segregated them from their fellow proletarians of European origin. In response to labor unrest, where solidarities were not determined by skin color, the plantation bourgeoisie sought to construct a buffer of poor whites, whose new racial identity would protect them from the enslavement visited upon African Americans. This was the invention of the white race, an act of cruel ingenuity that haunts America to this day. Allen's acclaimed study has become indispensable in debates on the origins of racial oppression in America. In this updated edition, scholar Jeffrey B. Perry provides a new introduction, a select bibliography and a study guide.
History of Physics
Title | History of Physics PDF eBook |
Author | Stephen G. Brush |
Publisher | |
Pages | 248 |
Release | 1988 |
Genre | Science |
ISBN |
Book Catalogue
Title | Book Catalogue PDF eBook |
Author | |
Publisher | |
Pages | 796 |
Release | 1854 |
Genre | |
ISBN |
Origins
Title | Origins PDF eBook |
Author | Jim Baggott |
Publisher | Oxford University Press |
Pages | 400 |
Release | 2018-06-06 |
Genre | Science |
ISBN | 0192561979 |
What is life? Where do we come from and how did we evolve? What is the universe and how was it formed? What is the nature of the material world? How does it work? How and why do we think? What does it mean to be human? How do we know? There are many different versions of our creation story. This book tells the version according to modern science. It is a unique account, starting at the Big Bang and travelling right up to the emergence of humans as conscious intelligent beings, 13.8 billion years later. Chapter by chapter, it sets out the current state of scientific knowledge: the origins of space and time; energy, mass, and light; galaxies, stars, and our sun; the habitable earth, and complex life itself. Drawing together the physical and biological sciences, Baggott recounts what we currently know of our history, highlighting the questions science has yet to answer.
A Companion to British Literature, Volume 2
Title | A Companion to British Literature, Volume 2 PDF eBook |
Author | Robert DeMaria, Jr. |
Publisher | John Wiley & Sons |
Pages | 482 |
Release | 2013-12-13 |
Genre | Literary Criticism |
ISBN | 1118731832 |