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Articles 1 à 20 sur 781
Par Arthur I Miller. 2005
Examines the history of astrophysics in the early twentieth century when the concept of black holes was hotly debated by…
a young graduate student from India and a leading British scientist. Discusses their professional rivalry and its repercussions on their personal lives and the scientific community. 2005Par Robyn Arianrhod. 2005
Combines history, biography, and science to portray the ways in which Einstein's respect for Isaac Newton, Michael Faraday, and James…
Clerk Maxwell helped formulate his theories of relativity. Discusses Maxwell's equations for electricity and magnetism and the relevance of mathematics in building models of physical discovery. 2005Par Stephen Hawking. 2005
An updated and more accessible version of A Brief History of Time (RC 26996). Emphasizes the concept of a dynamic…
cosmos, incorporating scientific knowledge from research and space exploration--by the Hubble Space telescope and satellites--not available in the previous, 1988 publication. 2005Par Hubert Reeves. 2011
" Dans cette suite de conversations avec lune de mes petites-filles, un été, sous le ciel étoilé que nous contemplons…
ensemble, je revis ces soirées du mois daoût avec mes enfants qui me bombardaient de questions, pendant que nous attendions les étoiles filantes. La contemplation de la voûte céleste et le sentiment de notre présence parmi les astres sont la source dun désir partagé den savoir plus sur ce mystérieux cosmos que nous habitons. " Hubert Reeves -- 4e de couvPar Peter D Ward. 2000
Paleontologist/geologist Ward and astronomer Brownlee outline their hypothesis that complex multicellular life--animals and higher plants--"is less pervasive in the universe…
than is...commonly assumed." The two scientists reexamine Earth's history to identify crucial attributes that have allowed the planet's rare, and perhaps unique, evolutionary achievements. 2000Par Hubert Reeves. 2007
"[...] Textes brefs [qui] constituent un véritable tour de force par la simplicité avec laquelle l'auteur présente notre compréhension du…
cosmos sans pour autant masquer la subtilité des notions évoquées : le Big Bang, la courbure de l'Univers, la matière et l'énergie " sombres ", les univers parallèles, le principe anthropique, les trous noirs, etc. Une remarquable mise à jour des plus récentes découvertes de l'astrophysique et de la cosmologie". -- 4e de couvAstronomy professor identifies common misconceptions about the cosmos. Topics range from false notions regarding distant galaxies to erroneous theories about…
what causes tides and seasons and which planet is the hottest. He emphasizes the origins of incorrect ideas, how to avoid them, and how to change them. 2001Par Richard Wolfson. 2003
Physicist explains for nonscientists the underlying principles of Einstein's theory of relativity. Explores the history of ideas that culminated in…
Einstein's vision of a four-dimensional universe of relativistic space-time. The author anticipates frequently asked questions, discussing time travel, curved space, black holes, and new meanings for past and future. 2003Ce volume aborde un domaine controversé à propos de l'effet des ondes électromagnétiques dans notre vie quotidienne. L'essentiel de l'ouvrage…
détaille l'aspect délétère: le quart de celui-ci est consacré à une nouvelle discipline nommée bio-électromagnétisme (effets bénéfiques). L'auteur livre les résultats d'une enquête qui a duré au-delà d'une quinzaine d'annéesPar Stephen Hawking. 2008
"C'est exactement ce que propose ce recueil de sept conférences sur le cosmos et la place que nous y tenons,…
avec cette idée que " la science devrait être compréhensible par tous et pas seulement par quelques spécialistes. " De la théorie de l'expansion de l'Univers à celle du Big Bang en passant par les trous noirs, la direction du temps ou les découvertes de Hubble, Hawking nous convie à un passionnant voyage." -- 4e de couvPar Hervé Ponchelet. 2007
"Si l'on rembobine le film de l'histoire du monde, de l'homme au Big Bang, tout s'enchaîne parfaitement bien. Par le…
jeu de l'évolution biologique, chimique et physique, l'homme apparaît comme l'ultime et imparable aboutissement d'un "projet" en germe dans l'explosion primordiale voici 13,7 milliards d'années. Illusion d'optique ! En réalité, du Big Bang à Homo sapiens, ce ne fut qu'une suite de hasards et de nécessités qui fait de nous, et du monde tel qu'il est, plutôt une incongruité, ou si l'on préfère, un "miracle". De l'explosion originelle, qui manqua de faire "pschitt" comme un pétard mouillé, jusqu'à l'éruption cataclysmique d'un volcan géant à Sumatra, voilà 80 000 ans, qui faillit bien nous rayer de la saga du vivant, Hervé Ponchelet a identifié sept catastrophes principales grâce auxquelles, paradoxalement, nous devons, en dépit de tout, d'être là. C'est cette histoire vraie qui est ici contée, débarrassée des croyances mais intégrant les convergences entre science et mythes, replaçant les découvertes et les découvreurs dans leur contexte et l'évolution des idées, précisément informée mais conçue et rédigée à l'intention du public le plus large. À défaut de savoir où nous allons, sachons mieux d'où nous venons." -- 4e de couvPar Samuel Graydon. 2023
Walter Isaacson's Einstein meets Craig Brown's 99 Glimpses of Princess Margaret , in this innovative biography of the famous physicist…
told in ninety-nine dazzling vignettes. Most of us would agree that Albert Einstein's name is synonymous with "genius" and that his likeness is often used as a shorthand for all scientists, appearing everywhere from cartoons to textbooks. He has become more myth than man. That being the case, how best to capture his essence? In Einstein in Time and Space , talented young science journalist Samuel Graydon answers that question with an illuminating mosaic—99 intriguingly different particles that cumulatively reveal Einstein's contradictory and multitudinous nature. Glimpsed among these shards: a slacker who failed every subject but math, a job seeker who couldn't get hired, a lothario who courted many women, and a charmer who was the life of the party. As brilliant as he was inconsistent, Einstein was simultaneously an avid supporter of the NAACP and the fight for civil rights and someone capable of great prejudice. He was loved by many, known by few, and inspirational to a generation of young physicists. Graydon reveals every corner of Einstein's world: the false reporting that rocketed Einstein to fame nearly overnight, his effect on people he met merely in passing, even the remarkable posthumous journey of the famed physicist's brain. Entertaining, comforting, bolstering, and shocking, Einstein in Time and Space is the unique story of a man who redefined how we view our universe and our place within itPar Barbara Cartland. 1991
Par Georges Charpak. 2002
Par Sidney Yip. 2023
A student-oriented introduction to understanding mechanisms at the atomistic level controlling macroscopic materials phenomena through molecular dynamics simulations.Machine-learning-based computation in…
materials innovation, performance optimization, and sustainability offers exciting opportunities at the mesoscale research frontier. Molecular Mechanisms in Materials presents research findings and insights about material behavior at the molecular level and its impact on macroscopic properties. The book&’s fifteen essays represent author Sidney Yip&’s work in atomistic modeling and materials simulation over more than five decades. The phenomena are grouped into five basic types: fluctuations in simple fluids, crystal melting, plasticity and fracture, glassy relaxations, and amorphous rheology, all focused on molecular mechanisms in base materials.The organizing principle of Molecular Mechanisms in Materials is multiscale modeling and simulation, where conceptual models and simulation techniques are linked across the micro-to-macro length and time scales to control the outcome of specific materials processes. Each essay addresses a specific standalone topic of materials phenomena while also recognizing the larger context of materials science and technology. Individual case studies serve both as standalone essays and companion pieces to each other. Indeed, the global transformation of science and technology is well underway: in his epilogue, Yip discusses the potential of artificial intelligence and machine learning to enhance future materials for societal benefits in the face of global challenges such as climate change, energy sustainability, infrastructure renewal, and nuclear arms control.Par Vijay Kumar, Vishal Sharma, Hendrik C. Swart, Irfan Ayoub. 2023
This book highlights the optical properties of metal oxides at both the fundamental and applied level and their use in…
various applications. The book offers a basic understanding of the optical properties and related spectroscopic techniques essential for anyone interested in learning about metal oxide nanostructures. This is partly due to the fact that optical properties are closely associated with other properties and functionalities (e.g., electronic, magnetic, and thermal), which are of essential significance to many technological applications, such as optical data communications, imaging, lighting, and displays, life sciences, health care, security, and safety. The book also highlights the fundamentals and systematic developments in various optical techniques to achieve better characterization, cost-effective, user-friendly approaches, and most importantly, state-of-the-art developing methodologies for various scientific and technological applications. It provides an adequate understanding of the imposed limitations and highlights the prospects and challenges associated with optical analytical methods to achieve the desired performance in targeted applications.This book introduces a complete quantitative evaluation system of the Whole Petroleum System (WPS) on theory and expounds the correlation…
and difference between conventional and unconventional oil and gas reservoirs and resources, with large number of well-prepared charts and novel expressions. It has important guiding significance for the exploration and development of conventional and unconventional oil and gas all over the world and provides valuable insights for reader with an interest in petroleum geology.Phases of Matter and their Transitions An all-in-one, comprehensive take on matter and its phase properties In Phases of Matter…
and their Transitions, accomplished materials scientist Dr. Gijsbertus de With delivers an accessible textbook for advanced students in the molecular sciences. It offers a balanced and self-contained treatment of the thermodynamic and structural aspects of phases and the transitions between them, covering solids, liquids, gases, and their interfaces. The book lays the groundwork to describe particles and their interactions from the perspective of classical and quantum mechanics and compares phenomenological and statistical thermodynamics. It also examines materials with special properties, like glasses, liquid crystals, and ferroelectrics. The author has included an extensive appendix with a guide to the mathematics and theoretical models employed in this resource. Readers will also find: Thorough introductions to classical and quantum mechanics, intermolecular interactions, and continuum mechanics Comprehensive explorations of thermodynamics, gases, liquids, and solids Practical discussions of surfaces, including their general aspects for solids and liquids Fulsome treatments of discontinuous and continuous transitions, including discussions of irreversibility and the return to equilibrium Perfect for advanced students in chemistry and physics, Phases of Matter and their Transitions will also earn a place in the libraries of students of materials science.Par Niklas Litzenberger. 2023
Teaching is characterized by complex interactions. Therefore, it is difficult to make global statements about a teaching sequence. However, methods…
that aim at a global assessment of teaching have often been used in indicator-based lesson observation. It remains unclear how reliable global assessments of entire lesson sequences are since no statements can be made about dynamic processes taking place. One approach is the State Space Grids (SSG) developed by Hollenstein (2013). These make it possible to relate the development of two teaching characteristics to each other over time to visualize dynamic processes. However, there is no suitable way to numerically capture the relationship between indicators, e.g. to compare such moment-to-moment assessments with global assessments. The aim of this work is therefore to extend the SSG approach to Advanced State Space Grids with mathematically based parameters, to test their practicability, to compare them with global assessments of entire teaching sequences, and to investigate their applicability to physics teaching. Numerical and graphical elements are added to the SSG plot. These include new relation types between the recorded indicators, chi-square tests, and parameters for densities and deviations.This book introduces characterizations of hyperordered structures using latest quantum beam technologies, the advanced theoretical methods for understanding the roles of the…
structures, and the state-of-the-arts materials containing the structures. In this book, the authors focus on the importance of defect complexes to improve functionality of crystals and that of orders of network structures to improve functionality of glass materials. These features can be regarded as interphases between perfect crystals and perfect amorphous, and they are the key factor for the evolution of materials science to a new dimension. The authors call such interphases "hyperordered structures" in this book. This is the first book that comprehensively summarizes glass science, defect science, and quantum beam science. It is valuable not only for active researchers in industry and academia but also graduate students.