Физика

Различные книги в жанре Физика

Конвективный теплообмен: линейная и нелинейная теории

М. И. Давидзон

Предлагаемое издание – это книга, разрушающая сложившиеся представления о явлении конвективного теплообмена. Первый закон термодинамики записан не только в привычной скалярной форме, но и векторной. Такой подход позволяет показать, что основополагающий для современной теории и практики закон охлаждения И. Ньютона не согласуется с первым законом термодинамики. Изложен оригинальный вывод нелинейных уравнений Навье – Стокса и энергии. Получено выражение для поверхностной плотности теплового потока как функции параметров процесса и геометрии системы, позволяющее вести расчёты в условиях ламинарных, переходных и турбулентных течений без использования коэффициента теплообмена. Решение некоторых задач сопоставлено с экспериментальными данными различных исследователей. Издание предназначено исследователям теплообмена, инженерно-техническим работникам, конструкторам теплоиспользующих устройств, преподавателям вузов, студентам энергетических, химико-технологических, технических вузов. Полезную и новую информацию обнаружат преподаватели и студенты физических факультетов университетов.

Hypotheses. Solar system and atoms

А. Т. Серков

The planetary systems of the micro- and macrocosm considered as two nodal points in the structure of matter, the author proposes hypotheses in which the laws of one system are transferred to another. The quantization of orbits in the solar and satellite systems is proved. An explanation is given of the reasons for the deceleration of artificial satellites, secular changes in orbital elements, and rotational speeds of bodies. The analysis of various theories of the origin of the solar system is given. The transfer of the laws of the macrocosm to the micro world allows us to interpret the entropy term in the equation of thermodynamic potential as the orbital kinetic energy of molecules gravitating relative to each other. A chemical bond is considered as a result of micro gravitation between the masses of nuclei. A gravitational equation is proposed for the micro world the calculations of the binding energy on which coincide with the experimental data. Additional chapters discuss the energy of the hydrogen cycle, the reasons for the multiplicity of masses and the periodicity of the properties of chemical elements, as well as the orbital mechanism of aggregate transitions, the new concept of Earth's magnetism and оn the strong interaction in matter. Author: AT Serkov, chapters 22-27 together with AA Serkov and MB Radishevsky

Фейнмановские лекции по физике. Т. IV (6)

Ричард Фейнман

Американский физик Ричард Фейнман – один из величайших ученых ХХ века, лауреат Нобелевской премии по физике. В свое время преподаватели Калифорнийского технологического университета задумались о том, как можно было бы перестроить курс физики, чтобы сделать его более занимательным и современным. Ричард Фейнман с энтузиазмом подхватил эту идею и согласился прочитать авторский двухгодичный курс лекций по общей физике, но только один раз. Университет, для которого это событие стало историческим, организовал запись лекций, и затем команда физиков подготовила издание в нескольких томах, которое и поныне считается одним из лучших вводных курсов по физике. В настоящий том вошли лекции по электродинамике.

Programmable Logic Controllers

Su Chen Jonathon Lin

The result of the author’s 30 years of teaching PLCs at two universities, Programmable Logic Controllers covers important and essential topics and skills a new PLC learner has to know and practice. Assuming the student knows nothing about the subject, it defines everything and features ample examples and breakdowns of important topics. Students taking PLC courses at two and four-year institutions will find this text especially useful. Additionally, it can be used by professionals in the fields of electrical control, automated systems, and manufacturing. FeaturesCovers PLC programming for three popular PLC brands: Allen-Bradley PLCs, Siemens PLCs, and Mitsubishi PLCs.Includes all essential PLC topics including: Electrical control basics, Numbers , Logic basics and simplification, PLC program design, PLC systems, Basic programming instructions, Advanced programming instructions, Analog control, PID control, PLC programming languages (Ladder Diagram and Function Block Diagram),Provides many programming examples in each chapter.Features review questions at the end of each chapter.Offers PowerPoint slides for instructors.

The ''Maintenance Insanity'' Cure: Practical Solutions to Improve Maintenance Work

Roger D. Lee

 Einstein said that insanity is “doing the same thing over and over again and expecting different results.”  Yet that is exactly what is happening in maintenance organizations.How many times have clients told consultants, “But we’ve always done it this way?!”This work will guide any size plant or organization to improve how they do maintenance, how to keep their equipment running longer, and create a more efficient and streamlined structure so they can be competitive in today’s market.  In many companies, especially the large ones, we fail to talk to each other enough to know what needs to change to drive continual improvements and reduce waste. This work will guide any size plant or organization to improve how they do maintenance, how to keep their equipment running longer, and create a more efficient and streamlined structure so they can be competitive in today’s market. The practical solutions offered in this work present the perfect antidote for maintenance insanity. The book is chock-full of useful checklists, flowcharts, templates and other helpful documents that readers can customize for their own needs. These are available in black and white in the book, and in full-color versions on an affiliated website, http://www.maintenanceinsanity.com.  

Case Studies in Maintenance and Reliability: A Wealth of Best Practices

V. Narayan

This unique and practical book describes 42 real-life events and/or situations in the careers of the three authors from which they gained insights into the applicable best practices in maintenance and reliability. The authors explain the underlying philosophies where relevant, drawing on the teachings of the leading thinkers in leadership and management. Designed to share knowledge and experience with the readers, in a readily accessible fashion, this resource does not tell the readers what to do or how to do it; it merely explains the event or situation the authors faced, and how they dealt with it. Readers can choose whether they wish to adopt or adapt the authors’ examples. These stories are dynamic illustrations of real life situations which readers will recognize in their own work situations. With a vast potential for improvements in reliability and maintenance performance in industry, these well proven approaches and best practices are sure to help stimulate improved performance on all fronts–safety and environmental, production, maintenance costs, and reputation!Provides a logical organization with chapters grouped into six broad headings, enabling readers to choose the order in which they wish to absorb the lessons, which are based on the Shewhart-Deming Continuous Improvement cycle.In addition to the Plan-Schedule-Execute-Analyze elements, the authors have added Leadership and People to complete the suite.Each chapter has broadly similar sections, beginning with a Background to the events, going on to describe the key elements of the approach, and ending with Lessons and Principles.Underlying theories, philosophies or even detailed descriptions of methods are stripped out of the main chapters and described in Appendices, so that only those readers who wish to delve into details may do so.Contains a Book Summary which draws all the principles and lessons together, and gives references to the relevant chapters.Copiously illustrated, with charts, diagrams and tables which relate closely to the text.

Атлас звездного неба

А. А. Шимбалев

В данном атласе вы найдете карты 88 созвездий Северного и Южного полушарий. Книга знакомит с легендами и историей появления названий различных созвездий. Здесь же вы найдете карту ближайшего спутника Земли – Луны, а также хронологию ее исследования. Издание предназначено широкому кругу читателей.

Let's Move It! What Makes Things Move (For Kiddie Learners)

Baby Professor

Discover why things move through this picture book. Composed of well-thought of pictures in clean formats, this picture book will teach your child to love learning and science too. This is perfect for early learners, whose imagination is more advanced than their reading skills and sentence comprehension. Order your copy today!