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Edge Of The Universe

Author: Paul Halpern
Publisher: John Wiley & Sons
ISBN: 111822082X
Size: 49.51 MB
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An accessible look at the mysteries that lurk at the edge of the known universe and beyond The observable universe, the part we can see with telescopes, is incredibly vast. Yet recent theories suggest that there is far more to the universe than what our instruments record—in fact, it could be infinite. Colossal flows of galaxies, large empty regions called voids, and other unexplained phenomena offer clues that our own "bubble universe" could be part of a greater realm called the multiverse. How big is the observable universe? What it is made of? What lies beyond it? Was there a time before the Big Bang? Could space have unseen dimensions? In this book, physicist and science writer Paul Halpern explains what we know—and what we hope to soon find out—about our extraordinary cosmos. Explains what we know about the Big Bang, the accelerating universe, dark energy, dark flow, and dark matter to examine some of the theories about the content of the universe and why its edge is getting farther away from us faster Explores the idea that the observable universe could be a hologram and that everything that happens within it might be written on its edge Written by physicist and popular science writer Paul Halpern, whose other books include Collider: The Search for the World's Smallest Particles, and What's Science Ever Done For Us: What the Simpsons Can Teach Us About Physics, Robots, Life, and the Universe

Einstein Relatively Simple

Author: Ira Mark Egdall
Publisher: World Scientific
ISBN: 9814525618
Size: 63.38 MB
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"Outstanding Academic Title for 2014" by CHOICE Einstein Relatively Simple brings together for the first time an exceptionally clear explanation of both special and general relativity. It is for people who always wanted to understand Einstein's ideas but never thought they could. Told with humor, enthusiasm, and rare clarity, this entertaining book reveals how a former high school drop-out revolutionized our understanding of space and time. From E=mc2 and everyday time travel to black holes and the big bang, Einstein Relatively Simple takes us all, regardless of our scientific backgrounds, on a mind-boggling journey through the depths of Einstein's universe. Along the way, we track Einstein through the perils and triumphs of his life — follow his thinking, his logic, and his insights — and chronicle the audacity, imagination, and sheer genius of the man recognized as the greatest scientist of the modern era. In Part I on special relativity we learn how time slows and space shrinks with motion, and how mass and energy are equivalent. Part II on general relativity reveals a cosmos where black holes trap light and stop time, where wormholes form gravitational time machines, where space itself is continually expanding, and where some 13.7 billion years ago our universe was born in the ultimate cosmic event — the Big Bang. Contents:Einstein Discovered: Special Relativity, E = mc2,and Spacetime:From Unknown to RevolutionaryThe Great ConflictThe Two PostulatesA New RealityThe Shrinking of TimeSimultaneity and the Squeezing of SpaceThe World's Most Famous EquationSpacetimeEinstein Revealed: General Relativity, Gravity, and the Cosmos:Einstein's Dream“The Happiest Thought of My Life”The Warping of Space and TimeStitching SpacetimeWhat is Spacetime Curvature?Einstein's MasterpieceThe Universe RevealedIn the Beginning Readership: Adults and young people all over the world who are curious about Einstein and how the universe works. Keywords:Einstein;Relativity;Special Relativity;General Relativity;Spacetime;Big Bang;Black Holes;Expansion of Space;Time Travel;E=mc2;Universe;Cosmos;Time Dilation;Length Contraction;Wormholes;Light Postulate;Length Contraction;Gravitational Time Dilation;Time Warp;Space Warp;Relativity Postulate;Lorentz Transformation;Light Clock;Relativity of Simultaneity;Twins Paradox;Equivalence Principle;Gravity;Spacetime Curvature;Spacetime Interval;Gaussian Co-Ordinates;Geodesic;Momenergy;The Einstein Equation;Schwarzschild Geometry;Bending of Starlight;Frame Dragging;Cosmic Microwave Background;Geometry of Universe;Flat Universe;Critical Density;Dark Matter;Dark Energy;Future of UniverseKey Features:Einstein Relatively Simple is the definitive book on Einstein's theories for the lay reader — one that is fun to read, comprehensive, and most important, understandableEinstein's ideas are explained in everyday languageThe book devotes eight chapters to special and a full eight chapters to general relativity. Most popular science books give general relativity only a brief mention or ignore it altogetherReviews: “This general relativity theory changed our views on the origin and on the ending (if any) of the universe … all topics that tickle the imagination of a general public and Egdall, bringing the reader to the point beyond general relativity, does not miss the opportunity to end his guided tour with a sparkling firework of these issues … it is an entertaining introduction for the layman, that brings the reader a very long way.” The European Mathematical Society “He covers the main topics of special and general relativity in a refreshing, personal way. This is a well-crafted, well-documented text with extensive endnotes, in which a bibliography is embedded. He introduces readers to his own unique entry into this very populous genre. Valuable for inquisitive nonscientists.” CHOICE “I'm crazy about it. It's the best presentation of relativity for non-scientists that I've seen.” Art Hobson Professor Emeritus of Physics University of Arkansas "The writing is jovial and energetic and holds the reader's attention. This book is a nice introduction to modern physics, with a great biography of Einstein included. This book is recommended for a lay reader with basic algebra skills; high school and beginning college physics students would find it easily accessible." Zentralblatt MATH

Einstein S Dice And Schr Dinger S Cat

Author: Paul Halpern
Publisher: Hachette UK
ISBN: 0465040659
Size: 17.55 MB
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"A fascinating and thought-provoking story, one that sheds light on the origins of... the current challenging situation in physics."--Wall Street Journal When the fuzzy indeterminacy of quantum mechanics overthrew the orderly world of Isaac Newton, Albert Einstein and Erwin Schrödinger were at the forefront of the revolution. Neither man was ever satisfied with the standard interpretation of quantum mechanics, however, and both rebelled against what they considered the most preposterous aspect of quantum mechanics: its randomness. Einstein famously quipped that God does not play dice with the universe, and Schrödinger constructed his famous fable of a cat that was neither alive nor dead not to explain quantum mechanics but to highlight the apparent absurdity of a theory gone wrong. But these two giants did more than just criticize: they fought back, seeking a Theory of Everything that would make the universe seem sensible again. In Einstein's Dice and Schrödinger's Cat, physicist Paul Halpern tells the little-known story of how Einstein and Schrödinger searched, first as collaborators and then as competitors, for a theory that transcended quantum weirdness. This story of their quest-which ultimately failed-provides readers with new insights into the history of physics and the lives and work of two scientists whose obsessions drove its progress. Today, much of modern physics remains focused on the search for a Theory of Everything. As Halpern explains, the recent discovery of the Higgs Boson makes the Standard Model-the closest thing we have to a unified theory- nearly complete. And while Einstein and Schrödinger failed in their attempt to explain everything in the cosmos through pure geometry, the development of string theory has, in its own quantum way, brought this idea back into vogue. As in so many things, even when they were wrong, Einstein and Schrödinger couldn't help but get a great deal right.

Other Worlds

Author: Christopher G. White
Publisher: Harvard University Press
ISBN: 0674984293
Size: 31.49 MB
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Christopher White points to ways that both spiritual practices and scientific speculation about multiverses and invisible dimensions are efforts to peer into the hidden elements and even existential meaning of the universe. Creatively appropriated, these ideas can restore a spiritual sense that the world is greater than anything our eyes can see.

The Quantum Labyrinth

Author: Paul Halpern
Publisher: Hachette UK
ISBN: 0465097596
Size: 46.17 MB
Format: PDF
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The story of the unlikely friendship between the two physicists who fundamentally recast the notion of time and history In 1939, Richard Feynman, a brilliant graduate of MIT, arrived in John Wheeler's Princeton office to report for duty as his teaching assistant. A lifelong friendship and enormously productive collaboration was born, despite sharp differences in personality. The soft-spoken Wheeler, though conservative in appearance, was a raging nonconformist full of wild ideas about the universe. The boisterous Feynman was a cautious physicist who believed only what could be tested. Yet they were complementary spirits. Their collaboration led to a complete rethinking of the nature of time and reality. It enabled Feynman to show how quantum reality is a combination of alternative, contradictory possibilities, and inspired Wheeler to develop his landmark concept of wormholes, portals to the future and past. Together, Feynman and Wheeler made sure that quantum physics would never be the same again.

God Probability And Life After Death

Author: William Hunt
Publisher: Lexington Books
ISBN: 1498526071
Size: 77.51 MB
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This book explores the probability of human resurrection based upon the existence of God and a set of evidential elements, namely, the Resurrection of Jesus, near-death experiences, and apparitions. William Hunt's argument employs subjective probability theory using Bayes' theorem in a cumulative process.

Das Unbekannte Universum

Author: Stuart Clark
Publisher: Springer-Verlag
ISBN: 3662548968
Size: 30.52 MB
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Eine Tour d'horizon bis an die Grenzen des Kosmos In zehn Kapiteln präsentiert Stuart Clark eine aktuelle Einführung in die Wissenschaft der Kosmologie: wie sie sich entwickelt hat, welche Konzepte und Personen sie maßgeblich geprägt haben, wo wir heute stehen – und wie es weitergehen könnte. Am 21. März 2013 veröffentlichte die Europäische Weltraumorganisation ESA eine neue Karte vom Echo des Urknalls. Diese – im Zuge der Planck-Mission erstellte – erste vollständige Karte der kosmischen Hintergrundstrahlung war ein wissenschaftlicher Paukenschlag. Über eine Zeit von 13,8 Milliarden Jahren hinweg und über einen Raum von 440 Trillionen Kilometern kann es physikalisch keine bessere Darstellung geben – das heißt, wir werden das frühe Universum kaum je detaillierter sehen. Einerseits erscheint eine solche Ansicht wie die Krönung der modernen Kosmologie, andererseits rüttelt sie an viele ihrer Grundfesten. Denn die Karte enthält Anomalien, die unser bisheriges Verständnis des Universums herausfordern. Sie zwingt uns, das, was bekannt ist, und das, was noch unbekannt ist, in neuem Licht zu betrachten. Wir werden ein verändertes Modell unseres Universums entwickeln müssen. Dies ist das erste Buch, das diesen epochalen wissenschaftlichen Paradigmenwechsel beleuchtet - und in einen breiteren Kontext stellt. Stuart Clark beschäftigt sich darin unter anderem mit der Frage, ob Newtons berühmte Gravitationsgesetze umgeschrieben werden müssen - oder ob die dunkle Materie und die dunkle Energie, die heute Schlagzeilen machen, etwa nur kosmische Phantome sind. Können wir jemals wissen, was vor dem Urknall passiert ist? Was befindet sich am Ende eines Schwarzen Loches? Gibt es Universen jenseits unseres eigenen? Existiert die Zeit? Wandeln sich die einst unveränderlich erscheinenden Gesetze der Physik?


Author: Jay M. Pasachoff
Publisher: Harcourt Brace College Publishers
ISBN: 9780030059070
Size: 40.26 MB
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