Your Search Results(showing 81)

    • Physicsx
    • Science & Mathematics
      September 2018

      Quantum Mechanics (First Volume, Second Edition)

      by ZHANG Yongde et al.

      “The Grand Dictionary of Physics problems and solutions” is a set of large-scale instrumental and comprehensive physics question solving series. The series cover the contents of comprehensive undergraduate physics courses from mechanics, heat, optics, electricity, modern physics to “four mechanics”, as well as nuclear physics, particle physics, condensed matter physics, plasma physics, astrophysics, laser physics, quantum information and so on with novel in content, focusing on physics, multi-disciplinary crossing research and the integration of research. The first volume of quantum mechanics (Second Edition) consists of six chapters, including the physical basis of quantum mechanics, one-dimensional steady state problem, bound state problem of central field, operator, representation and implementation, orbital and spin angular momentum, and motion of charged particles in electromagnetic field.

    • Science & Mathematics
      April 2021

      Cosmic Zoom

      Scale, Knowledge, and Mediation

      by Horton, Zachary

      Many of us have encountered a version of what Zachary Horton calls the “cosmic zoom”—a visual journey through the many scales of the universe, from the microscopic to the cosmic. Most of our daily perception operates at a level of scale somewhere between that of quarks and galaxies, and it is this comfort with the immediately visible everyday world that the cosmic zoom unsettles. Horton uses the history of the cosmic zoom to explore how that scale itself has been constructed over the past seventy years. How has cosmic zoom media influenced scientific and popular understanding of the unseen world and how it may be known, accessed, and exploited? Horton insists that scale is the key to understanding and addressing major contemporary issues including climate change and big data, but people working on issues of scale in various disciplines often talk past each other. Horton starts by sketching four common ways of thinking about scale derived from cartography, physics, engineering/biology, and mathematics. He then shows how these concepts operate in various disciplines, explains why they don’t fit together, and puts forth a new, transdisciplinary theory and vocabulary of scale, one that links the natural sciences, humanities, and social sciences. In this ambitious work, scale becomes a foundation for rethinking the relationships between knowledge, mediation, and environment.

    • Science: general issues

      Science of Illusion

      by Mohamed Yahia

      How were people forced to believe in the rotation of planets around the Sun? What if Newton's theory was a mathematical miracle and a physical disaster? Do you know anything about relativity and the texture of spacetime? How did the battle between relativity and quantum take place, and how did attempts to reconcile them take place? Do you consider INTERSTELLAR a pure fantasy? Do you see in the series DARK unreasonable oddities? What if these dramas were based on some theories of modern physics?! This book tells you the story of science from birth, the attempts to depart science from imaginary myths and superstitions in explaining phenomena and the mechanism of action of the universe, and how it ended up authorizing to nature facts stranger than the imagination from which it was fleeing! Time may stop, the past, the present and the future are all present, your outlook is what creates reality around you, gravity may be a means of communication between us and aliens, and you and I may be just a three-dimensional projection of a caricature story with only two dimensions! This is the tale of science, preceded by imagination, preceded by it.

    • Astronomy, space & time

      Zonnestelselmodel (Solar System Scale Model) 1:100 billion (Dutch)

      The perfect tool to learn all about our Solar System

      by Rob Walrecht

      This unique product is both a scale model and concise encyclopaedia of the Solar System in one! It consists of sixteen information-packed cards (10x12 cm or 4x5 inch), all pertaining to the Sun, the planets, the Moon, asteroids, comets and the new class to which Pluto now belongs, the dwarf planets. These cards are a quick way to learn all there is to know about these objects, as well as being ideal for youngsters, papers and talks! Primarily, however, it is an exquisite scale model (scale 1:100 billion) of our fascinating Solar System, presenting the best possible representation of the distances within our Solar System as well as the unimaginable emptiness of the universe. In this scale model, the Sun is the size of a marble (14 mm), Jupiter, which is at 8 m/26 ft from the Sun, as large as a plastic pin-head, the Earth (at 1.5 m/5 ft) as large a grain of coarse sand, Mars (at 2.3 m/7.5 ft) as large a grain of fine sand and Pluto, which would now be at 47 m/155 ft from the Sun, as large as a dust particle... The scale model, when completely placed, is 64 m (210 ft) long. The closest next star is at 400 km (250 miles) from the Sun! The cards show the sizes of the Heavenly bodies at scale, as well as these sizes one hundred times ‘enlarged’, for better comparison of the members of our Solar System. Special standards to place them are included and the cards contain holes to be hung on the wall or from sticks. Available are an English version (with metric units), a US version (with inches, miles, Fahrenheit etc.) and a Dutch version.

    • Astronomy, space & time

      Solar System Scale Model 1:100 billion (US edition)

      The perfect tool to learn all about our Solar System

      by Rob Walrecht

      This unique product is both a scale model and concise encyclopaedia of the Solar System in one! It consists of sixteen information-packed cards (10x12 cm or 4x5 inch), all pertaining to the Sun, the planets, the Moon, asteroids, comets and the new class to which Pluto now belongs, the dwarf planets. These cards are a quick way to learn all there is to know about these objects, as well as being ideal for youngsters, papers and talks! Primarily, however, it is an exquisite scale model (scale 1:100 billion) of our fascinating Solar System, presenting the best possible representation of the distances within our Solar System as well as the unimaginable emptiness of the universe. This version is made for US customers, as the units used are inches, miles, Fahrenheit etc. In this scale model, the Sun is the size of a marble (14 mm), Jupiter, which is at 8 m/26 ft from the Sun, as large as a plastic pin-head, the Earth (at 1.5 m/5 ft) as large a grain of coarse sand, Mars (at 2.3 m/7.5 ft) as large a grain of fine sand and Pluto, which would now be at 47 m/155 ft from the Sun, as large as a dust particle... The scale model, when completely placed, is 64 m (210 ft) long. The closest next star is at 400 km (250 miles) from the Sun! The cards show the sizes of the Heavenly bodies at scale, as well as these sizes one hundred times ‘enlarged’, for better comparison of the members of our Solar System. Special standards to place them are included and the cards contain holes to be hung on the wall or from sticks. Available are an English version (with metric units), a US version (with inches, miles, Fahrenheit etc.) and a Dutch version.

    • Astronomy, space & time

      Solar System Scale Model 1:100 billion (metric)

      The perfect tool to learn all about our Solar System

      by Rob Walrecht

      The perfect tool to learn all about our Solar System This unique product is both a scale model and concise encyclopaedia of the Solar System in one! It consists of sixteen information-packed cards (10x12 cm or 4x5 inch), all pertaining to the Sun, the planets, the Moon, asteroids, comets and the new class to which Pluto now belongs, the dwarf planets. These cards are a quick way to learn all there is to know about these objects, as well as being ideal for youngsters, papers and talks! Primarily, however, it is an exquisite scale model (scale 1:100 billion) of our fascinating Solar System, presenting the best possible representation of the distances within our Solar System as well as the unimaginable emptiness of the universe. In this scale model, the Sun is the size of a marble (14 mm), Jupiter, which is at 8 m/26 ft from the Sun, as large as a plastic pin-head, the Earth (at 1.5 m/5 ft) as large a grain of coarse sand, Mars (at 2.3 m/7.5 ft) as large a grain of fine sand and Pluto, which would now be at 47 m/155 ft from the Sun, as large as a dust particle... The scale model, when completely placed, is 64 m (210 ft) long. The closest next star is at 400 km (250 miles) from the Sun! The cards show the sizes of the Heavenly bodies at scale, as well as these sizes one hundred times ‘enlarged’, for better comparison of the members of our Solar System. Special standards to place them are included and the cards contain holes to be hung on the wall or from sticks. Available are an English version (with metric units), a US version (with inches, miles, Fahrenheit etc.) and a Dutch version.

    • Astronomy, space & time

      Astroset 'Sterrenkunde is fun!'

      A set of three wonderful astronomical instruments for youngsters

      by Rob Walrecht

      This is a special set made for youngsters, and consisting of three products: the Solar System Scale Model (scale 1:100 billion), the build-it-yourself Star Wheel and the BIY Sundial. The Solar System Scale Model is a ready made product; the two BIY products are made of high quality 400 gram cardboard. It is a very instructive set, consisting of three veru special products.

    • Astronomy, space & time
      May 2013

      Genieten van de sterrenhemel

      ('Enjoying the Night Sky')

      by Rob Walrecht

      Covering everything that everyone should know about astronomy as it influences our daily lives: the day, the year, the seasons, the changing of the Moon’s ‘shape’, how the planets we see in the sky move, about the time we use, our calendar, the tides. There are chapters about the Solar System, and stars and the Milky Way, subjects that are much more extensively treated in parts 2 and 3. Including much background information about constellations and star charts, and planispheres in particular. Also contains a wonderful observation programme per season, for the layman. It basically covers the heavens as we can observe it from Earth. First part of series of three, about astronomy (Enjoying Astronomy), for the general public. They are also useful as books for astronomy courses, and written for 12-14 years and up. About 100 wonderful pictures and 90 illustrations.

    • Chemistry
      June 2013

      Higgs gevonden

      Complete overview of the building blocks of matter (tr.)

      by Rob Walrecht & Luc Hendriks

      Code B04 - English translation of title: Higgs found In July 2012 scientists announced that they had found the Higgs particle, with almost 100% certainty. This booklet, published a few months later, is a complete overview of matter, from atoms and molecules, via protons, neutrons and electrons, to the elementary particles that make up all matter and energy that we know. This book is useful for everyone who is interested in the basics of matter. The first chapter is about atoms, molecules, protons, neutrons and electrons; the Periodic Table, atom mass and atom number; chemical reactions; ions and ionisation; isotopes and radioactivity and more. It is for ages 14 years and up. The second chapter is an introduction to particle physics: elementary particles and the Standard Model; and particle-wave duality – so for older youngsters. The third chapter is about the Higgs particle, the theory, particle accelerators and the 50 years long and quite expensive search for this elusive particle. And do you measure the Higgs particle? With many illustrations (including an adapted Standard Model) and pictures.

    • Astronomy, space & time
      July 2013

      Astronomy Posters

      Set of 6 posters about astronomy

      by Rob Walrecht

      The many illustrations in the three astronomy books of our 'Enjoying Astronomy' series are a real treasure and were used to publish a set of six astronomy posters (for now in Dutch only). The posters are coupled to the books: 2 posters made from illustrations of one book. The posters are: 1a. Alles beweegt! De bewegingen van Zon en Maan (Everything moves! The movements of the Sun and Moon). It is an overview of the major celestial movements, causing the ‘day’, the ýear’, the seasons, the phases of the Moon, eclipses and more. Size 50 x 70 cm. 1b. The Stars. Everything about stars: their sizes, colours and temperatures, brightness and more. . Size 50 x 70 cm. 2a. Overview of the Solar System. The Solar System in five steps, with the Inner Solar System (up to the Asteroid Belt; the Outer Solar System (the realm of the giant planets); the Kuiper Belt, the Inner Oort Cloud to the Outer Oort Cloud. Size 50 x 70 cm. 2b. The members of the Solar System; comparisons of groups of Solar System objects: the rocky planets, giants, dwarf planets (and candidate dwarf planets!) and satellites (‘moons’). Also a large ‘familie portrait’ with all the members of the Solar System of 1000 km diameter and larger. Finally the Solar System to scale (up to Neptune). Size 50 x 70 cm. 3a – The Universe. An overview of the Universe, in nine step, from the Inner Solar System to a distance of 1 billion light-years and then to the complete Universe. Size 45 x 95 cm, portrait. 3b. Radiation from the Universe. A complete Electromagnetic Spectrum, almost 1 metre wide. Also contains a lot of interesting information about the astronomical importance of different wavelengths, with pictures of the great galaxy M 81 (Ursa Major) in radio wavelengths, infrared, visible light, UV, X-rays, gamma rays and combinations. Size 45 x 95 cm, landscape.

    • Astronomy, space & time
      June 2013

      Genieten van het zonnestelsel

      ('Enjoying the Solar System')

      by Rob Walrecht

      This book is like a ‘Grand Tour’ through the Solar System, with a very clear and logical build-up of the subjects, and the use of many specially made illustrations and (written or drawn) scale models. The most important processes that shaped our Solar System are described. This second part of the series takes the reader away from Earth, to discover our ‘neighbourhood’, the Solar System. Second part of series of three, about astronomy (Enjoying Astronomy), for the general public. They are also useful as books for astronomy courses, and written for 12-14 years and up. About 150 wonderful pictures and 60 illustrations

    • Astronomy, space & time
      June 2013

      Genieten van het heelal

      ('Enjoying the Universe')

      by Rob Walrecht

      This book is all about stars and galaxies. After describing the history of astronomy, the writer first explains electromagnetic radiation and matter. Than there is a chapter about distances and how we can measure them. Stars are described in two chapters: ‘from the outside’ (colours, brightness, size, etc.); and ‘their interior’ (how they work). Chapter 7 is about the Milky Way, chapter 8 about all other galaxies (‘The Universe’). The last chapter is about how it all began, 13.7 billion years ago. This third part of the series takes as away from our Solar System, to go deeper into space, and into the matter! Third part of series of three, about astronomy (Enjoying Astronomy), for the general public. They are also useful as books for astronomy courses, and written for 12-14 years and up. About 125 wonderful pictures and 50 illustrations

    • Science: general issues
      September 2007

      De sublieme eenvoud van relativiteit

      Een visuele inleiding

      by Sander Bais

      Bais wrote a cute pictorial monograph that smoothly takes you to the very heart of the theory that shook the foundations of science a century ago. Einstein’s 1905 papers on special relativity marked a turning point in our understanding of such fundamental notions a space, time, mass and energy. In an elegant sequence of easy to follow steps through a splendid series of spacetime diagrams Sander Bais gives you the thrill of discovering Einstein’s sublime but extremely counter intuitive reality yourself. The chapters cover subjects like , the postulates, simultaneity, causality, contractions and dilations, and energy and momentum. Discover in a pictorial way why moving clocks run slow, why things cannot move faster then the speed of light, or why mass and energy are equivalent… A delightful journey for the curious mind, the critical student, and the teacher who wants to inspire, but also for all those who want to recapture this beautiful body of knowledge. This book is not as much a philosophical or historical reflection on special relativity, as a manual that with a few words brings you the essential contents of this unique theory. A guided tour full of thought provoking riddles, paradoxes and brainteasers that might keep you awake, fortunately their many back-of- the-envelope resolutions are also included. This book is as close to a do-it-yourself relativity kit as you can get. The author nicely exploits the fact that one image can say a lot more than a full page of algebra, and where algebra is hard to remember some of Bais’ diagrams are hard to forget.

    • Physics
      January 1993

      Issues in Risk Assessment

      by Committee on Risk Assessment Methodology, National Research Council

      The scientific basis, inference assumptions, regulatory uses, and research needs in risk assessment are considered in this two-part volume. The first part, Use of Maximum Tolerated Dose in Animal Bioassays for Carcinogenicity, focuses on whether the maximum tolerated dose should continue to be used in carcinogenesis bioassays. The committee considers several options for modifying current bioassay procedures. The second part, Two-Stage Models of Carcinogenesis, stems from efforts to identify improved means of cancer risk assessment that have resulted in the development of a mathematical dose-response model based on a paradigm for the biologic phenomena thought to be associated with carcinogenesis.

    • Physics
      January 1994

      Atomic, Molecular, and Optical Science

      An Investment in the Future

      by Committee on Atomic, Molecular, and Optical Sciences, National Research Council

      This book responds to the call for a clear description of the role of basic science in meeting societal needs. It gives examples of societal benefits of atomic, molecular, and optical (AMO) science in a number of key areas, including industrial technology, information technology, energy, global change, defense, health and medical technology, space technology, and transportation. This volume highlights the role of lasers in trapping, cooling, and manipulating individual atoms and molecules to make possible ultraprecise atomic clocks, structural engineering at the atomic level (nanotechnology), and new approaches to the study of deoxyribonucleic acid (DNA). AMO science is shown to be a field that is both an intellectually important basic science and a powerful enabling science that supports many other areas of science and technology.

    • Children's & young adult fiction & true stories
      April 2014

      The Heaviness

      by Sam Hawksmoor

      The Heaviness is the final volume in The Repossession Trilogy and the Genie Magee story. It’s been a year since Rian, Renée and Genie survived ‘The Hunting’ burned down Whistler, fled Cobble Hill and the evil Reverend Schneider. Now they’re back with Marshall and the safety of the Apple Farm. However rest assured Schneider hasn’t forgotten Genie Magee. Rian has been forced to live at home. He can only see Genie on weekends, but Genie is fine with that, at least she knows he still loves her, as she does him. She's happy being back on the farm with Moucher, learning new skills and taking care of Marshall - who is tinkering in the new barn - trying to replicate Cary's anti-gravity experiment. So far without any success. Ri has made Genie study and together they took their SAT’s, Rian getting offers for College places. But the more they talk about college, the more Genie worries whether their teen romance can survive? Once Rian gets to where he wants to study he’ll be distracted by other girls. As her Grandma once said: ‘Love is like smoke, the scent of it lingers long after the fire is out.’ All this is about to change – radically. Did you think Genie and Ri could be left alone forever? Cary died experimenting with anti-gravity. Someone somewhere wants that data urgently and is prepared to do something very desperate to get it. Somewhere in the city, a meaner, vengeful Reverend Schneider is thinking of revenge. Genie is about to wake up to a whole lot of trouble and discover that some people will do anything to get what they want. It won’t be nice or pretty. What do you do when you break the law of gravity? Genie and Renée have just 36 hours to save Rian or he dies.

    • Biography: general

      Simply Dirac

      by Helge Kragh

      Paul Dirac (1902–1984) was a brilliant mathematician and a 1933 Nobel laureate whose work ranks alongside that of Albert Einstein and Sir Isaac Newton. Although not as well known as his famous contemporaries Werner Heisenberg and Richard Feynman, his influence on the course of physics was immense. His landmark book, The Principles of Quantum Mechanics, introduced that new science to the world and his “Dirac equation” was the first theory to reconcile special relativity and quantum mechanics. Dirac held the Lucasian Chair of Mathematics at Cambridge University, a position also occupied by such luminaries as Isaac Newton and Stephen Hawking. Yet, during his 40-year career as a professor, he had only a few doctoral students due to his peculiar personality, which bordered on the bizarre. Taciturn and introverted, with virtually no social skills, he once turned down a knighthood because he didn’t want to be addressed by his first name. Einstein described him as “balancing on the dizzying path between genius and madness.” In Simply Dirac, author Helge Kragh blends the scientific and the personal, and invites the reader to get to know both Dirac the quantum genius and Dirac the social misfit. Featuring cameo appearances by some of the greatest scientists of the 20th century and highlighting the dramatic changes that occurred in the field of physics during Dirac’s lifetime, this fascinating biography is an invaluable introduction to a truly singular man.

    • Philosophy of mind
      March 2014

      The Pauli-Jung Conjecture

      And its impact today

      by Atmanspacher, Harald, B01; Fuchs, Christopher A., B01

      Related to the key areas of Pauli's and Jung's joint interests, the book covers overlapping issues from the perspectives of physics, philosophy, and psychology. Of primary significance are epistemological questions connected to issues such as realism...

    • Physics
      April 2000

      An Assessment of Naval Hydromechanics Science and Technology

      by Committee for Naval Hydromechanics Science and Technology, Naval Studies Board, National Research Council

      The Department of the Navy maintains a vigorous science and technology (S&T) research program in those areas that are critically important to ensuring U.S. naval superiority in the maritime environment. A number of these areas depend largely on sustained Navy Department investments for their health, strength, and growth. One such area is naval hydromechanics, that is, the study of the hydrodynamic and hydroacoustic performance of Navy ships, submarines, underwater vehicles, and weapons. A fundamental understanding of naval hydromechanics provides direct benefits to naval warfighting capabilities through improvements in the speed, maneuverability, and stealth of naval platforms and weapons. An Assessment of Naval Hydromechanics Science and Technology is an assessment of S&T research in the area of naval hydromechanics. This report assesses the Navy's research effort in the area of hydromechanics, identifies non-Navy-sponsored research and development efforts that might facilitate progress in the area, and provides recommendations on how the scope of the Navy's research program should be focused to meet future objectives.

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