G. Wells' 1895 classic The Time Machine, readers of science fiction have puzzled over the paradoxes of time travel. What would happen if a time traveler tried to change history? Would some force or law of nature prevent him? Or would his action produce a "new" history, branching away from the original?In the last decade of the twentieth century a group of theoretical physicists at the California Institute of Technology undertook a serious investigation of the possibility of pastward time travel, inspiring a serious and sustained study that engaged more than thirty physicists working at universities and institutes around the world.Many of the figures involved are familiar: Einstein, Stephen Hawking and Kip Thorne; others are names known mostly to physicists. These are the new time travelers, and this is the story of their work--a profoundly human endeavor marked by advances, retreats, and no small share of surprises. It is a fantastic journey to the frontiers of physics.

    Others send it straight to hell... Grab all four books in the thrilling CYBER SEED QUADRILOGY for one low price, in this great value 1200-page sci-fi box set! When Kurt Jacobs imagines the ultimate gadget — one capable of replacing phones, credit cards, keys and TVs — the idea consumes his every waking moment. When the Sycamore corporation buys into Kurt's creation and The Seed becomes a reality, his every dream comes true. Power like this has never existed. The launch of The Seed, a powerful microchip implant that turns each user's palm into a fully functioning trackpad and effectively turns them into walking computers, breaks all sales records. Alongside the augmented reality UltraLenses which act as the system's display, it immediately renders all handheld devices obsolete. But amid all of the awe and optimism, there is far more going on behind the curtain than Kurt or anyone else could ever have predicted... Cyber Seed Quadrilogy imaginatively chronicles The Seed's colossal impact on a society unprepared to handle it, from the high hopes of launch day to the breakneck descent into corporate dystopia. Remarkable apps and groundbreaking features that make life easier and more enjoyable... unprecedented surveillance and privacy abuses in a world where your eyes can no longer be trusted... both sides of a timely story unfold in this 1200-page complete series box set. And Kurt Jacobs, the guilt-wracked genius responsible for it all, may well be the only man who can do anything to put things right... This box set contains all four books in the CYBER SEED QUADRILOGY, previously published individually as: 1) Sycamore 2) Sycamore 2 3) Sycamore X (10-story collection) 4) Sycamore XL (12-story collection) Imaginative new technologies, devious conspiracies, and a whole lot of action-packed drama... dive in to the thrilling CYBER SEED QUADRILOGY today! (From the author of the blockbuster international bestseller, Not Alone)

    FROM GRIT TO GREAT is a delightful treat for aspiring students, millenial workers, and budding entrepreneurs of all ages looking for inspiration and motivation on how to "make it big." It's the book where business meets wit. Join Jonathan as he discusses the following topics:FUEL YOUR SUCCESS FROM GRIT: What is Grit? How do you develop grit? Jonathan explains that you don't need to become Einstein, a Richie Rich, or a royalty to succeed in life--what you need is grit.BEHIND THE SCENES SPILLED: From bedroom to boardroom, Jonathan shares never-before-revealed thoughts and life lessons taken from Mr. Tony Fernandes and fellow candidates.HACK THE CORPORATE WORLD: From working hard to working smart, get practical tips on how to climb the corporate ladder faster!BE THE NEXT APPRENTICE: Aspiring to join The Apprentice Asia? Learn tips and tactics from the winner himself!

    EarthCent's diplomats are learning on the job - but the galaxy doesn't come with instructions. Get a running start on the funny and heartwarming Union Station series with a three book bundle at the special introductory price. Kelly Frank is EarthCent's top diplomat on Union Station, but her job description has always been a bit vague. The pay is horrible and she's in hock up to her ears for her furniture, which is likely to end up in a corridor because she's behind on rent for her room. Sometimes she has to wonder if the career she has put ahead of her personal life for fifteen years is worth it. When Kelly receives a gift subscription to the dating service that's rumored to be powered by the same benevolent artificial intelligence that runs the huge station, she decides to swallow her pride and give it a shot. But as her dates go from bad to worse, she can only hope that the supposedly omniscient AI is planning a happy ending.

    Their quest: to be the first to detect gravitational waves, infinitesimal quakes that stretch and compress space-time and could add a brand-new dimension to our universal knowledge-allowing us to hear a sun going supernova, black holes colliding, and perhaps one day, the remnant rumble of the Big Bang itself...

    After decades of global primacy, NASA has ended the space-shuttle program, cutting off its access to space. No astronauts will be launched in an American craft, from American soil, until the 2020s, and NASA may soon find itself eclipsed by other countries’ space programs.With his signature wit and thought-provoking insights, Neil deGrasse Tyson—one of our foremost thinkers on all things space—illuminates the past, present, and future of space exploration and brilliantly reminds us why NASA matters now as much as ever. As Tyson reveals, exploring the space frontier can profoundly enrich many aspects of our daily lives, from education systems and the economy to national security and morale. For America to maintain its status as a global leader and a technological innovator, he explains, we must regain our enthusiasm and curiosity about what lies beyond our world.Provocative, humorous, and wonderfully readable, Space Chronicles represents the best of Tyson’s recent commentary, including a must-read prologue on NASA and partisan politics. Reflecting on topics that range from scientific literacy to space-travel missteps, Tyson gives us an urgent, clear-eyed, and ultimately inspiring vision for the future.

    The book is also ideal for university and third-level physics or engineering courses on solar photovoltaics, with exercises to check students' understanding and reinforce learning. It is the perfect companion to the Massive Open Online Course (MOOC) on Solar Energy (DelftX, ET.3034TU) presented by co-author Arno Smets. The course is available in English on the nonprofit open source edX.org platform, and in Arabic on edraak.org. Over 100,000 students have already registered for these MOOCs.

    Could she use quantum tunnelling to get through the neighbour's fence and chase bunnies? What about quantum teleportation to catch squirrels before they climb out of reach? In this witty and informative book, Orzel and Emmy - the talking dog - discuss the key theories of Quantum Physics and its fascinating history. From quarks and gluons to Heisenberg's uncertainty principle, this is the perfect introduction to the fundamental laws which govern the universe.

    What happened during those years and what has happened since to refine the understanding of this phenomenon is the fascinating story told here.We move from a coffee shop in Zurich, where Einstein and Max von Laue discuss the madness of quantum theory, to a bar in Brazil, as David Bohm and Richard Feynman chat over cervejas. We travel to the campuses of American universities—from J. Robert Oppenheimer’s Berkeley to the Princeton of Einstein and Bohm to Bell’s Stanford sabbatical—and we visit centers of European physics: Copenhagen, home to Bohr’s famous institute, and Munich, where Werner Heisenberg and Wolfgang Pauli picnic on cheese and heady discussions of electron orbits.Drawing on the papers, letters, and memoirs of the twentieth century’s greatest physicists, Louisa Gilder both humanizes and dramatizes the story by employing their own words in imagined face-to-face dialogues. Here are Bohr and Einstein clashing, and Heisenberg and Pauli deciding which mysteries to pursue. We see Schrödinger and Louis de Broglie pave the way for Bell, whose work is here given a long-overdue revisiting. And with his characteristic matter-of-fact eloquence, Richard Feynman challenges his contemporaries to make something of this entanglement.

    Salient Features: 1.Very short answer type questions (including true-false type questions and fill in the blanks type questions). 2.Short answer type questions. 3. Long answer type questions (or Essay type questions). 4. Multiple choice questions (MCQs) based on theory. 5. Questions based on high order thinking skills (HOTS). 6. Multiple choice questions (MCQs) based on practical skills in science.. 7. NCERT book questions and exercises (with answers). 8. Value based questions (with answers).

    Nor do you need to be a great scientist to appreciate the exciting discoveries and intriguing mysteries of our universe. Dr. Robert piccioni brings the excitement of modern scientific discoveries to general audiences. He makes the key facts and concepts understandable without "dumbing" them down. He presents them in a friendly, conversational manner and includes many personal anecdotes about the people behind the science. With 33 images and over 100 graphics, this book explains the real science behind the headlines and sound bites. Learn all about:our universe: how big? how old? what came before?the big bang, black holes and supernovaequantum mechanics and uncertaintyhow the immense and the minute are connectedwhat is special about general relativityhow mankind can become earth's best friend

    And you'll also learn the "rules of the game" - the forces that drive those particles and the ways in which they interact - that underlie the workings of the universe.The lectures have been designed to be enriching for everyone, regardless of scientific background or mathematical ability. Virtually all you'll need as you enter this fascinating world are your curiosity, common sense, and, as Professor Pollock notes, "an open mind for the occasional quantum weirdness." As you move through the lectures, you'll also gain a knowledge of how those particles fit into perhaps the greatest scientific theory of all time: the Standard Model of particle physics; a grasp of key terms like "gauge symmetry," "quantum chromodynamics," and "unified quantum field Theory;" and an appreciation of how particle physics fits in with other branches of physics - including cosmology and quantum mechanics - to create our overall understanding of nature.

    He looks at the difficult dialogue between science and religion; the conflict between our human desire for permanence and the impermanence of nature; the possibility that our universe is simply an accident; the manner in which modern technology has separated us from direct experience of the world; and our resistance to the view that our bodies and minds can be explained by scientific logic and laws. And behind all of these considerations is the suggestion—at once haunting and exhilarating—that what we see and understand of the world is only a tiny piece of the extraordinary, perhaps unfathomable whole.

    Some of the objects are described by future historians; others through found materials, short stories, or dialogues. All come from a very real future.

    It has been developed in response to the need for a text that supports the mastery of this difficult subject. Therefore, in addition to presenting electromagnetics in a concise and logical manner, the text includes end-of-section review questions, worked examples, boxed remarks that alert students to key ideas and tricky points, margin notes, and point-by-point chapter summaries. Examples and applications invite students to solve problems and build their knowledge of electromagnetics. Application topics include: electric motors, transmission lines, waveguides, antenna arrays and radar systems.