The Equilibrium Controversy

Guidobaldo Del Monte’s Critical Notes on the Mechanics of Jordanus and Benedetti and Their Historical and Conceptual Backgrounds

Author: Peter Damerow,Jürgen Renn

Publisher: epubli

ISBN: 3869319593

Category: Philosophy

Page: 388

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The Equilibrium Controversy sheds new light on an age-old debate about mechanics
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Modern Vacuum Physics

Author: Austin Chambers

Publisher: CRC Press

ISBN: 0203492404

Category: Science

Page: 360

View: 8724

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Modern Vacuum Physics presents the principles and practices of vacuum science and technology along with a number of applications in research and industrial production. The first half of the book builds a foundation in gases and vapors under rarefied conditions, The second half presents examples of the analysis of representative systems and describes some of the exciting developments in which vacuum plays an important role. The final chapter addresses practical matters, such as materials, components, and leak detection. Throughout the book, the author's explanations are presented in terms of first principles and basic physics, augmented by illustrative worked examples and numerous figures.
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Industrial Process Sensors

Author: David M. Scott

Publisher: CRC Press

ISBN: 135183584X

Category: Technology & Engineering

Page: 256

View: 5851

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As manufacturing processes become increasingly complex, industry must rely on advanced sensor technology and process control to improve efficiency and product quality. Processes now need a variety of on-line measurements, such as film thickness, particle size, solids concentrations, and contamination detection. Industrial Process Sensors provides a coherent review of the physical principles, design, and implementation of a wide variety of in-process sensors used to control manufacturing operations. Real data from commercial installations illustrates the operation and limitations of these devices. The book begins with a review of the basic physics of sound, light, electricity, and radiation, with a focus on their role in sensor devices. The author introduces the generic sensor model and discusses the propagation of measurement errors. He goes on to describe conventional process sensors that measure temperature, pressure, level, and flow. The second half of the book focuses on more advanced topics, such as particle size measurement in slurries and emulsions, tomography and process imaging of manufacturing operations, on-line measurement of film thickness, identification of polymer type for recycling, and characterization of reinforced polymers and composites. By exploring both theory and final implementation of sensors used to control industrial manufacturing processes, Industrial Process Sensors provides the information you need to develop solutions to a wide range of industrial measurement needs.
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Boundaries of Evolution

What Would Darwin Think Now About Dna, the Big Bang, and Finite Time?

Author: Theodore R. Johnstone M.D.

Publisher: Trafford Publishing

ISBN: 149074567X

Category: Science

Page: 202

View: 3161

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Boundaries of Evolution describes the unlikelihood of evolutionary theory to explain how it is supposed to scale three major biological cliffs. The first cliff is the need for a logical explanation of how random chemical reactions could produce the first living cell from the primordial soup. The second is the problem of explaining how the first single-celled eukaryote evolved from a prokaryote. Mathematical improbabilities of evolutionary theory to scale the first two cliffs, in the time available, are demonstrated. The third insurmountable cliff is the necessity for a reasonable explanation of how millions of different kinds of multi-celled eukaryotes could have quickly evolved from single-celled eukaryotes. Random mutations occurring in DNA, accepted or rejected by natural selection, are hailed as the source of advancement for the increase in biotic complexity. The most common time for mutations to occur in the DNA is during replication. Therefore, evolutionary advancement should occur faster in biota with the most frequent replication cycles. If both evolutionary theory and the fossil record are correct, prokaryotes, which replicate in as little as 20 minutes took 2 billion years to evolve the first single-celled eukaryote. Single-celled eukaryotes, generally having shorter reproductive times than multi-celled eukaryotes, took another billion years to evolve the first multi-celled eukaryote. Then during Cambrian times, the multi-celled eukaryotes with the longest reproductive cycles literally exploded in diversity in a comparatively short time. How could this be? Other inadequacies of Darwin's theory are presented for everyone to see.
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