Christian Doppler
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The Search for Christian Doppler
Author | : Alec Eden |
Publsiher | : Springer Science & Business Media |
Total Pages | : 143 |
Release | : 2012-12-06 |
Genre | : Medical |
ISBN | : 9783709166772 |
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It is now 150 years ago, on 25th May 1842, that the son of a Salzburg ston emason presented a scientific work "On the coloured light of the double stars and certain other heavenly bodies" at a meeting of the Royal Bo hemian Society of Sciences held in Prague. Christian Andreas Doppler, then professor at the Prague Technical Institute, set a milestone in scien tific history in the meeting room of the Royal Society in the Charles Uni versity, just a few meters from the National Theatre where another genius from Salzburg, Wolfgang Amadeus Mozart, had celebrated his musical triumph with the premiere of his opera Don Giovanni fifty-five years earlier. Doppler's lecture set out in brilliant simplicity what we now call the Doppler principle, which since has found numerous uses in astronomy, which was of primary interest to Christian Doppler. In addition, it has found countless practical applications in physics, navigation, aeronautics, geodesy, medicine, science and technology. In medicine alone, Doppler sonography is now an established diagnostic procedure in the fields of childbirth, cardiology and diseases of the blood vessels, neurology, neuro surgery and vascular surgery, and is continually finding new medical appli cations in today's world of high technology.
Christian Doppler
Author | : Ewald Hiebl,Maurizio Musso |
Publsiher | : Living Edition, STARNA Ges.m.b.H. |
Total Pages | : 216 |
Release | : 2007 |
Genre | : Doppler effect |
ISBN | : 3901585095 |
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Moving the Stars
Author | : Peter Maria Schuster |
Publsiher | : Living Edition, STARNA Ges.m.b.H. |
Total Pages | : 236 |
Release | : 2005 |
Genre | : Biography & Autobiography |
ISBN | : 3901585052 |
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Galileo Unbound
Author | : David D. Nolte |
Publsiher | : Oxford University Press |
Total Pages | : 384 |
Release | : 2018-07-12 |
Genre | : Science |
ISBN | : 9780192528506 |
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Galileo Unbound traces the journey that brought us from Galileo's law of free fall to today's geneticists measuring evolutionary drift, entangled quantum particles moving among many worlds, and our lives as trajectories traversing a health space with thousands of dimensions. Remarkably, common themes persist that predict the evolution of species as readily as the orbits of planets or the collapse of stars into black holes. This book tells the history of spaces of expanding dimension and increasing abstraction and how they continue today to give new insight into the physics of complex systems. Galileo published the first modern law of motion, the Law of Fall, that was ideal and simple, laying the foundation upon which Newton built the first theory of dynamics. Early in the twentieth century, geometry became the cause of motion rather than the result when Einstein envisioned the fabric of space-time warped by mass and energy, forcing light rays to bend past the Sun. Possibly more radical was Feynman's dilemma of quantum particles taking all paths at once — setting the stage for the modern fields of quantum field theory and quantum computing. Yet as concepts of motion have evolved, one thing has remained constant, the need to track ever more complex changes and to capture their essence, to find patterns in the chaos as we try to predict and control our world.
Christian Doppler thinker and benefactor
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Author | : Alec Eden |
Publsiher | : Davies Incorporated |
Total Pages | : 118 |
Release | : 1988 |
Genre | : Doppler effect |
ISBN | : 3900905002 |
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Chemical and Biological Properties of Food Allergens
Author | : Lucjan Jedrychowski,Harry J. Wichers |
Publsiher | : CRC Press |
Total Pages | : 452 |
Release | : 2009-09-28 |
Genre | : Medical |
ISBN | : 9781420058574 |
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In the U.S. alone, severe food-related allergic reactions account for an estimated 30,000 emergency room visits and 150 deaths per year - unsettling statistics for food product developers and manufacturers who are charged with ensuring food safety and quality throughout the entire farm-to-table production chain. Providing the clear-cut information
A New Doppler Effect
Author | : Florian Ion Petrescu |
Publsiher | : BoD – Books on Demand |
Total Pages | : 82 |
Release | : 2012 |
Genre | : Science |
ISBN | : 9783848229901 |
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The Doppler effect (or Doppler shift), named after Austrian physicist Christian Doppler who proposed it in 1842 in Prague, is the change in frequency of a wave for an observer moving relative to the source of the wave. It is commonly heard when a vehicle sounding a siren or horn approaches, passes, and recedes from an observer. The received frequency is higher (compared to the emitted frequency) during the approach, it is identical at the instant of passing by, and it is lower during the recession. The relative changes in frequency can be explained as follows. When the source of the waves is moving toward the observer, each successive wave crest is emitted from a position closer to the observer than the previous wave. Therefore each wave takes slightly less time to reach the observer than the previous wave. Therefore the time between the arrival of successive wave crests at the observer is reduced, causing an increase in the frequency. While they are travelling, the distance between successive wave fronts is reduced; so the waves \\\\\\\"bunch together\\\\\\\". Conversely, if the source of waves is moving away from the observer, each wave is emitted from a position farther from the observer than the previous wave, so the arrival time between successive waves is increased, reducing the frequency. The distance between successive wave fronts is increased, so the waves "spread out". For waves that propagate in a medium, such as sound waves, the velocity of the observer and of the source is relative to the medium in which the waves are transmitted. The total Doppler Effect may therefore result from motion of the source, motion of the observer, or motion of the medium. Each of these effects is analyzed separately. For waves which do not require a medium, such as light or gravity in general relativity, only the relative difference in velocity between the observer and the source needs to be considered.
Security and Quality in Cyber Physical Systems Engineering
Author | : Stefan Biffl,Matthias Eckhart,Arndt Lüder,Edgar Weippl |
Publsiher | : Springer Nature |
Total Pages | : 507 |
Release | : 2019-11-09 |
Genre | : Computers |
ISBN | : 9783030253127 |
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This book examines the requirements, risks, and solutions to improve the security and quality of complex cyber-physical systems (C-CPS), such as production systems, power plants, and airplanes, in order to ascertain whether it is possible to protect engineering organizations against cyber threats and to ensure engineering project quality. The book consists of three parts that logically build upon each other. Part I "Product Engineering of Complex Cyber-Physical Systems" discusses the structure and behavior of engineering organizations producing complex cyber-physical systems, providing insights into processes and engineering activities, and highlighting the requirements and border conditions for secure and high-quality engineering. Part II "Engineering Quality Improvement" addresses quality improvements with a focus on engineering data generation, exchange, aggregation, and use within an engineering organization, and the need for proper data modeling and engineering-result validation. Lastly, Part III "Engineering Security Improvement" considers security aspects concerning C-CPS engineering, including engineering organizations’ security assessments and engineering data management, security concepts and technologies that may be leveraged to mitigate the manipulation of engineering data, as well as design and run-time aspects of secure complex cyber-physical systems. The book is intended for several target groups: it enables computer scientists to identify research issues related to the development of new methods, architectures, and technologies for improving quality and security in multi-disciplinary engineering, pushing forward the current state of the art. It also allows researchers involved in the engineering of C-CPS to gain a better understanding of the challenges and requirements of multi-disciplinary engineering that will guide them in their future research and development activities. Lastly, it offers practicing engineers and managers with engineering backgrounds insights into the benefits and limitations of applicable methods, architectures, and technologies for selected use cases.