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Author: Newcomen Society (Great Britain)
Publisher:
Published: 1926
Total Pages: 190
ISBN-13:
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Author: Newcomen Society (Great Britain)
Publisher:
Published: 1926
Total Pages: 190
ISBN-13:
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Publisher:
Published: 1965
Total Pages: 508
ISBN-13:
DOWNLOAD EBOOKAuthor: Newcomen Society for the Study of the History of Engineering and Technology
Publisher:
Published: 1965
Total Pages: 896
ISBN-13:
DOWNLOAD EBOOKAuthor: John Dewey
Publisher: Createspace Independent Publishing Platform
Published: 1916
Total Pages: 456
ISBN-13:
DOWNLOAD EBOOK. Renewal of Life by Transmission. The most notable distinction between living and inanimate things is that the former maintain themselves by renewal. A stone when struck resists. If its resistance is greater than the force of the blow struck, it remains outwardly unchanged. Otherwise, it is shattered into smaller bits. Never does the stone attempt to react in such a way that it may maintain itself against the blow, much less so as to render the blow a contributing factor to its own continued action. While the living thing may easily be crushed by superior force, it none the less tries to turn the energies which act upon it into means of its own further existence. If it cannot do so, it does not just split into smaller pieces (at least in the higher forms of life), but loses its identity as a living thing. As long as it endures, it struggles to use surrounding energies in its own behalf. It uses light, air, moisture, and the material of soil. To say that it uses them is to say that it turns them into means of its own conservation. As long as it is growing, the energy it expends in thus turning the environment to account is more than compensated for by the return it gets: it grows. Understanding the word "control" in this sense, it may be said that a living being is one that subjugates and controls for its own continued activity the energies that would otherwise use it up. Life is a self-renewing process through action upon the environment.
Author:
Publisher:
Published: 1925
Total Pages: 832
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DOWNLOAD EBOOKAuthor: Otto Neurath
Publisher:
Published: 1938
Total Pages: 144
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DOWNLOAD EBOOKAuthor: Charles Bazerman
Publisher:
Published: 1988
Total Pages: 0
ISBN-13: 9780299116941
DOWNLOAD EBOOKThe forms taken by scientific writing help to determine the very nature of science itself. In this closely reasoned study, Charles Bazerman views the changing forms of scientific writing as solutions to rhetorical problems faced by scientists arguing for their findings. Examining such works as the early Philosophical Transactions and Newton's optical writings as well as Physical Review, Bazerman views the changing forms of scientific writing as solutions to rhetorical problems faced by scientists. The rhetoric of science is, Bazerman demonstrates, an embedded part of scientific activity that interacts with other parts of scientific activity, including social structure and empirical experience. This book presents a comprehensive historical account of the rise and development of the genre, and views these forms in relation to empirical experience.
Author: Dan M. Goebel
Publisher: John Wiley & Sons
Published: 2008-12-22
Total Pages: 528
ISBN-13: 0470436263
DOWNLOAD EBOOKThroughout most of the twentieth century, electric propulsion was considered the technology of the future. Now, the future has arrived. This important new book explains the fundamentals of electric propulsion for spacecraft and describes in detail the physics and characteristics of the two major electric thrusters in use today, ion and Hall thrusters. The authors provide an introduction to plasma physics in order to allow readers to understand the models and derivations used in determining electric thruster performance. They then go on to present detailed explanations of: Thruster principles Ion thruster plasma generators and accelerator grids Hollow cathodes Hall thrusters Ion and Hall thruster plumes Flight ion and Hall thrusters Based largely on research and development performed at the Jet Propulsion Laboratory (JPL) and complemented with scores of tables, figures, homework problems, and references, Fundamentals of Electric Propulsion: Ion and Hall Thrusters is an indispensable textbook for advanced undergraduate and graduate students who are preparing to enter the aerospace industry. It also serves as an equally valuable resource for professional engineers already at work in the field.
Author: Derek John de Solla Price
Publisher:
Published: 1963
Total Pages: 136
ISBN-13:
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