Xem 1-20 trên 364 kết quả Nature physics
  • Physics is as well as basic science because the physical laws governing all other natural sciences. This means that the natural sciences as biology, chemistry, geography ... study only specific parts of nature and must comply with the laws of physics. For example, the chemistry of these substances are governed by the physical laws of quantum mechanics, thermodynamics and electromagnetism.

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  • Rather than focusing on earlier treatments, based largely on the simplifications of geometrical acoustics, Physical Principles of Medical Ultrasonics examines concepts of wave acoustics, introducing them in the very first chapter. Practical implications of these concepts are explored, first the generation and nature of acoustic fields, and then their formal descriptions and measurement. Real tissues attenuate and scatter ultrasound in ways that have interesting relationships to their physical chemistry, and the book includes coverage of these topics.

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  • Some people make physical chemistry sound more confusing than it really is. One of their best tricks is to define it inaccurately, saying it is ‘the physics of chemicals’. This definition is sometimes quite good, since it suggests we look at a chemical system and ascertain how it follows the laws of nature. This is true, but it suggests that chemistry is merely a sub-branch of physics; and the notoriously mathematical nature of physics impels us to avoid this otherwise useful way of looking at physical chemistry....

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  • Seven years have passed since the publication of the previous edition of this book. During that time, sensor technologies have made a remarkable leap forward. The sensitivity of the sensors became higher, the dimensions became smaller, the selectivity became better, and the prices became lower. What have not changed are the fundamental principles of the sensor design. They are still governed by the laws of Nature. Arguably one of the greatest geniuses who ever lived, Leonardo Da Vinci, had his own peculiar way of praying.

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  • (BQ) Achieve success in your physics course by making the most of what Ebook Physics for Scientists and Engineers has to offer. From a host of in-text features to a range of outstanding technology resources, you'll have everything you need to understand the natural forces and principles of physics. Throughout every chapter, the authors have built in a wide range of examples, exercises, and illustrations that will help you understand the laws of physics AND succeed in your course.

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  • Part 1 book "Check Your English Vocabulary for natural collocations" gives the reader the lessons: Everyday Activities, physical appearance, food and drink, health and sickness, driving, holidays, families, ... Invite you to refer.

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  • This introduction to nuclear physics provides an excellent basis for a core undergraduate course in this area. The authors show how simple models can provide an understanding of the properties of nuclei, both in their ground and excited states, and of the nature of nuclear reactions. They include chapters on nuclear fission, its application in nuclear power reactors, the role of nuclear physics in energy production and nucleosynthesis in stars.

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  • Like most people, you have probably been taught to see money as a tangible resource that resides in your wallet and bank account until you need to spend it. You use it to pay bills, buy products and services, and support worthwhile causes. When you need more money, you probably do what most people would do: take physical action that will bring in more money, such as working extra hours, asking your boss for a raise, or even selling a few of your material possessions.

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  • Tham khảo sách 'physical metallurgy 4e volume3', kỹ thuật - công nghệ, tự động hoá phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • The end of the 1970s saw the idea of fractal geometry spread into numerous areas of physics. Indeed, the concept of fractal geometry, introduced by B. Mandelbrot, provides a solid framework for the analysis of natural phenomena in various scientific domains. As Roger Pynn wrote in Nature, “If this opinion continues to spread, we won’t have to wait long before the study of fractals becomes an obligatory part of the university curriculum.”

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  • The principal charge to the Committee on Elementary Particle Physics in the 21st Century was to recommend priorities for the U.S. particle physics program for the next 15 years. Described in the Executive Summary and more fully presented in the Overview, the committee’s considered response is laid out in detail in the main text of this report, which begins by discussing the scientific challenges in particle physics and conveying the current status of the U.S. program and then presents the committee’s consensus on the best way to sustain a competitive and globally relevant U.S.

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  • Physics has an important role in our life. Without physics and the work of physicists, our modern life would not exist. Using physics, people created machines, instruments and some different divices from the crudest to the most modern aspect. Techology is developed more rapidly, more modern day by day. Moreover, all other natural sciences- example chemistry, biology, medicinedepend upon physics for the foundations of their knowledge.

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  • After gaining his PhD in 1953, Professor Smallman spent five years at the Atomic Energy Research Establishment at Harwell, before returning to the University of Birmingham where he became Professor of Physical Metallurgy in 1964 and Feeney Professor and Head of the Department of Physical Metallurgy and Science of Materials in 1969. He subsequently became Head of the amalgamated Department of Metallurgy and Materials (1981), Dean of the Faculty of Science and Engineering, and the first Dean of the newly-created Engineering Faculty in 1985.

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  • THE first two books of Aristotle's Physics do not deal with problems in what we today call physics: Aristotle's own titles for them were probably ,Qoncirjujjg_prindpks' and 'Concerning nature' (Ross,pp. 1-6), andhe^ntesjsaphilosopher, not as a scientist. Nevertheless, Phys. II, at least, seems to be addressed to the sdentifi^jtudjntjof_nature_(the phusikos: 194*16, bio, i98a2a), and both books may, perhaps, most aptly be classified as philosophy of science.

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  • Researches were carried out on 916 male students and 910 female Korean students at the age of from 20 to 25 in Seoul National University, South Korea. The results show that in general, the basic morphological and physical indexes of students of South Korea are approximately equal to the average standard of the world’s youth now and the Korean students have anthropometric indexes better than Vietnamese students. For reasons that effect to anthropometry index of South Korean students, except for the influences of genetic, endocrine and race. ...

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  • Ecosystem accounts are being developed as part of the System of Environmental-Economic Accounts which aims at supplementing the UN System of National Accounts with information on the environment and natural capital. The purpose is to broaden the scope of the variables taken into account in policymaking in order to improve understanding of the interdependence and interactions between the economy and the environment.

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  • Computational linguistics is generally considered to be the branch of engineering that uses computers to do useful things with linguistic signals, but it can also be viewed as an extended test of computational theories of human cognition; it is this latter perspective that psychologists find most interesting. Language provides a critical test for the hypothesis that physical symbol systems are adequate to perform all human cognitive functions.

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  • Tham khảo sách 'nature cure', y tế - sức khoẻ, y học thường thức phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • The Layered Domain Class system (LDC) is an experimental natural language processor being developed at Duke University which reached the prototype stage in M a y of 1983. Its primary goals are (I) to provide English-language retrieval capabilities for structured but unnormaUzed data files created by the user, (2) to allow very complex semantics, in terms of the information directly available from the physical data file; and (3) to enable users to customize the system to operate with new types of data. In this paper we shall discuss (a) the types of modifiers LDC provides for; (b) h o...

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  • We demonstrate an open-source natural language generation engine that produces descriptions of entities and classes in English and Greek from OWL ontologies that have been annotated with linguistic and user modeling information expressed in RDF . We also demonstrate an accompanying plug-in for the Prot´ g´ ontology editor, e e which can be used to create the ontology’s annotations and generate previews of the resulting texts by invoking the generation engine.

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