Download or read book What Holds Us to Earth written by Jennifer Boothroyd and published by Lerner Publications ™. This book was released on 2017-08-01 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: A ball drops to the ground. Leaves fall from a tree. Gravity is at work all around you. But what exactly is gravity? And how does it affect different objects? Read this book to find out! Learn all about matter, energy, and forces in the Exploring Physical Science series—part of the Lightning Bolt BooksTM collection. With high-energy designs, exciting photos, and fun text, Lightning Bolt BooksTM bring nonfiction topics to life!
Download or read book Quantum Space written by Jim Baggott and published by Oxford University Press. This book was released on 2018-11-08 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today we are blessed with two extraordinarily successful theories of physics. The first is Albert Einstein's general theory of relativity, which describes the large-scale behaviour of matter in a curved spacetime. This theory is the basis for the standard model of big bang cosmology. The discovery of gravitational waves at the LIGO observatory in the US (and then Virgo, in Italy) is only the most recent of this theory's many triumphs. The second is quantum mechanics. This theory describes the properties and behaviour of matter and radiation at their smallest scales. It is the basis for the standard model of particle physics, which builds up all the visible constituents of the universe out of collections of quarks, electrons and force-carrying particles such as photons. The discovery of the Higgs boson at CERN in Geneva is only the most recent of this theory's many triumphs. But, while they are both highly successful, these two structures leave a lot of important questions unanswered. They are also based on two different interpretations of space and time, and are therefore fundamentally incompatible. We have two descriptions but, as far as we know, we've only ever had one universe. What we need is a quantum theory of gravity. Approaches to formulating such a theory have primarily followed two paths. One leads to String Theory, which has for long been fashionable, and about which much has been written. But String Theory has become mired in problems. In this book, Jim Baggott describes
Download or read book On Gravity written by Anthony Zee and published by Princeton University Press. This book was released on 2020-03-10 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Of the four fundamental forces of nature, gravity might be the least understood and yet the one with which we are most intimate. From the months each of us spent suspended in the womb anticipating birth to the moments when we wait for sleep to transport us to other realities, we are always aware of gravity. In On Gravity, physicist A. Zee combines profound depth with incisive accessibility to take us on an original and compelling tour of Einstein's general theory of relativity. Inspired by Einstein's audacious suggestion that spacetime could ripple, Zee begins with the stunning discovery of gravity waves. He goes on to explain how gravity can be understood in comparison to other classical field theories, presents the idea of curved spacetime and the action principle, and explores cutting-edge topics, including black holes and Hawking radiation. Zee travels as far as the theory reaches, leaving us with tantalizing hints of the utterly unknown, from the intransigence of quantum gravity to the mysteries of dark matter and energy. Concise and precise, and infused with Zee's signature warmth and freshness of style, On Gravity opens a unique pathway to comprehending relativity and gaining deep insight into gravity, spacetime, and the workings of the universe"--Publisher's website.
Download or read book The Ascent of Gravity written by Marcus Chown and published by Simon and Schuster. This book was released on 2017-11-07 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why the force that keeps our feet on the ground holds the key to understanding the nature of time and the origin of the universe. Gravity is the weakest force in the everyday world yet it is the strongest force in the universe. It was the first force to be recognized and described yet it is the least understood. It is a "force" that keeps your feet on the ground yet no such force actually exists. Gravity, to steal the words of Winston Churchill, is "a riddle, wrapped in a mystery, inside an enigma." And penetrating that enigma promises to answer the biggest questions in science: what is space? What is time? What is the universe? And where did it all come from? Award-winning writer Marcus Chown takes us on an unforgettable journey from the recognition of the "force" of gravity in 1666 to the discovery of gravitational waves in 2015. And, as we stand on the brink of a seismic revolution in our worldview, he brings us up to speed on the greatest challenge ever to confront physics.
Download or read book Gravity s Century written by Ron Cowen and published by Harvard University Press. This book was released on 2019-05-06 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: A sweeping account of the century of experimentation that confirmed Einstein’s general theory of relativity, bringing to life the science and scientists at the origins of relativity, the development of radio telescopes, the discovery of black holes and quasars, and the still unresolved place of gravity in quantum theory. Albert Einstein did nothing of note on May 29, 1919, yet that is when he became immortal. On that day, astronomer Arthur Eddington and his team observed a solar eclipse and found something extraordinary: gravity bends light, just as Einstein predicted. The finding confirmed the theory of general relativity, fundamentally changing our understanding of space and time. A century later, another group of astronomers is performing a similar experiment on a much larger scale. The Event Horizon Telescope, a globe-spanning array of radio dishes, is examining space surrounding Sagittarius A*, the supermassive black hole at the center of the Milky Way. As Ron Cowen recounts, the foremost goal of the experiment is to determine whether Einstein was right on the details. Gravity lies at the heart of what we don’t know about quantum mechanics, but tantalizing possibilities for deeper insight are offered by black holes. By observing starlight wrapping around Sagittarius A*, the telescope will not only provide the first direct view of an event horizon—a black hole’s point of no return—but will also enable scientists to test Einstein’s theory under the most extreme conditions. Gravity’s Century shows how we got from the pivotal observations of the 1919 eclipse to the Event Horizon Telescope, and what is at stake today. Breaking down the physics in clear and approachable language, Cowen makes vivid how the quest to understand gravity is really the quest to comprehend the universe.
Download or read book Greenglow written by Ronald Evans and published by Troubador Publishing Ltd. This book was released on 2015-04-28 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes an exciting, but unfinished scientific adventure story. It tells of the epic struggle by scientists to wrest the secrets from nature of how to control the force of electromagnetism and how to control aerodynamic forces. Control of the force of gravity has yet to be achieved. Analogies suggest where a breakthrough might be made. Greenglow & the search for gravity control follows the attempts mankind has made over the years to understand gravity as well as looking at more recent experiments to control it. The book is written by an engineer, who worked in the aerospace industry, and who persuaded BAE Systems to sponsor Project Greenglow, a small research programme aimed at investigating some ideas for controlling gravity. Based on analogies in nature, the book provides a road map for scientists, engineers and the general public who want to know more about gravity and our search to control it. Discovering nature’s secrets is an exciting, but unfinished story – there is much we still don’t know. The book describes the quest by scientists to gain control of gravity and electromagnetism, the two long-range forces of nature. Faraday discovered the secret of electromagnetic control. Newton began the search for gravity control, later continued by Einstein, but it eluded them. One day the secret will be discovered either by careful experimentation or, as is often the case, by stumbling across it by chance. In the future it is expected that gravity control will underpin a new method of propulsion and this book concludes with a look at some possible forms. Greenglow is a fascinating read for any aerospace engineers, physicists, experimental research scientists, science journalists, science historians, futurologists, UFO enthusiasts, Star Trekkies and general public interested in the breakthrough in understanding of how to control gravity.
Download or read book Isaac Newton s Scientific Method written by William L. Harper and published by Oxford University Press. This book was released on 2011-12-08 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes bibliographical references (p. [397]-410) and index.
Download or read book What Remains to Be Discovered written by John Maddox and published by Free Press. This book was released on 1999-11-05 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: What wonders of science will the 21st century bring? John Maddox takes up this challenge by describing precisely what remains to be discovered. Building on twenty-three years' experience at the helm of the world's preeminent science magazine, Nature, Maddox identifies new areas of discovery in physics, biology, health, intelligence, and global catastrophe. As Maddox shows, the rate of scientific discovery will continue to accelerate, hurtling us toward ever more exciting discoveries in the next century.
Download or read book Gravity s Shadow written by Harry Collins and published by University of Chicago Press. This book was released on 2010-08-15 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt: According to the theory of relativity, we are constantly bathed in gravitational radiation. When stars explode or collide, a portion of their mass becomes energy that disturbs the very fabric of the space-time continuum like ripples in a pond. But proving the existence of these waves has been difficult; the cosmic shudders are so weak that only the most sensitive instruments can be expected to observe them directly. Fifteen times during the last thirty years scientists have claimed to have detected gravitational waves, but so far none of those claims have survived the scrutiny of the scientific community. Gravity's Shadow chronicles the forty-year effort to detect gravitational waves, while exploring the meaning of scientific knowledge and the nature of expertise. Gravitational wave detection involves recording the collisions, explosions, and trembling of stars and black holes by evaluating the smallest changes ever measured. Because gravitational waves are so faint, their detection will come not in an exuberant moment of discovery but through a chain of inference; for forty years, scientists have debated whether there is anything to detect and whether it has yet been detected. Sociologist Harry Collins has been tracking the progress of this research since 1972, interviewing key scientists and delineating the social process of the science of gravitational waves. Engagingly written and authoritatively comprehensive, Gravity's Shadow explores the people, institutions, and government organizations involved in the detection of gravitational waves. This sociological history will prove essential not only to sociologists and historians of science but to scientists themselves.
Download or read book Quantum Mechanics and Gravity written by Mendel Sachs and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes a paradigm change in modern physics from the philosophy and mathematical expression of the quantum theory to those of general relativity. The approach applies to all domains - from elementary particles to cosmology. The change is from the positivistic views in which atomism, nondeterminism and measurement are fundamental, to a holistic view in realism, wherein matter - electrons, galaxies, - are correlated modes of a single continuum, the universe. A field that unifies electromagnetism, gravity and inertia is demonstrated explicitly, with new predictions, in terms of quaternion and spinor field equations in a curved spacetime. Quantum mechanics emerges as a linear, flatspace approximation for the equations of inertia in general relativity.
Download or read book Conversations on Quantum Gravity written by Jácome Armas and published by Cambridge University Press. This book was released on 2021-08-26 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading theorists share their important insights into the ongoing quest of theoretical physics to find a quantum theory of gravity.
Download or read book Connecting Quarks with the Cosmos written by National Research Council and published by National Academies Press. This book was released on 2003-03-12 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances made by physicists in understanding matter, space, and time and by astronomers in understanding the universe as a whole have closely intertwined the question being asked about the universe at its two extremesâ€"the very large and the very small. This report identifies 11 key questions that have a good chance to be answered in the next decade. It urges that a new research strategy be created that brings to bear the techniques of both astronomy and sub-atomic physics in a cross-disciplinary way to address these questions. The report presents seven recommendations to facilitate the necessary research and development coordination. These recommendations identify key priorities for future scientific projects critical for realizing these scientific opportunities.
Download or read book Gravity s Arc written by David Darling and published by Turner Publishing Company. This book was released on 2007-07-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advance Praise for Gravity's Arc "A beautifully written exposition of the still mysterious force that holds our universe together--and the even more mysterious dark twin that may blow it apart." --Joshua Gilder, coauthor of Heavenly Intrigue "A lucid book as up-to-date as the effect of gravity on the bones of astronauts." --Denis Brian, author of The Unexpected Einstein How did they do it? How did one of the greatest geniuses who ever lived retard the study of gravity for 2,000 years? How did a gluttonous tyrant with a gold nose revolutionize our view of the solar system? How could an eccentric professor shake the foundations of an entire belief system by dropping two objects from a tower? How did a falling apple turn the thoughts of a reclusive genius toward the moon? And how could a simple patent clerk change our entire view of the universe by imagining himself riding on a beam of light? In Gravity's Arc, you'll discover how some of the most colorful, eccentric, and brilliant people in history first locked, then unlocked the door to understanding one of nature's most essential forces. You'll find out why Aristotle's misguided conclusions about gravity became an unassailable part of Christian dogma, how Galileo slowed down time to determine how fast objects fall, and why Isaac Newton erased every mention of one man's name from his magnum opus Principia. You'll also figure out what Einstein meant when he insisted that space is curved, whether there is really such a thing as antigravity, and why some scientists think that the best way to get to outer space is by taking an elevator.
Download or read book Discovering Nature s Laws written by Laura Purdie Salas and published by Millbrook Press. This book was released on 2011-08-01 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sir Isaac Newton changed the world with his many discoveries and inventions about mathematics, science, optics, and physics. Although he was brilliant, Newton felt no need to publish his ideas or to inform his fellow scientists of the amazing discoveries he made. Because of this, his discoveries were often disputed. Despite the controversy that often surrounded him, Newton made astounding advances in his efforts to understand how nature worked. His legacy lives on through inventions such as microscopes, eyeglasses, telescopes, and cameras.
Download or read book A Computable Universe written by Hector Zenil and published by World Scientific. This book was released on 2013 with total page 855 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume discusses the foundations of computation in relation to nature. It focuses on two main questions: What is computation? and How does nature compute?
Download or read book Discovering The Nature Of Light The Science And The Story written by Norval Fortson and published by World Scientific. This book was released on 2022-04-11 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a science text about light for the general reader; it is also an adventure story and a detective story revealing how the secrets of light were uncovered. Readers can share in the thrill of each discovery and learn about some of the myriad applications opened up by these fascinating discoveries, including the telescope, fiber optics, the laser, and even the recent optical detection of gravitational waves from space.With Professor Fortson, distinguished experimental physicist, as your tour guide, follow the journey from the 17th century — when Descartes first calculated the size of the rainbow — to the 20th century, when the quantum theory of light was born. Learn how Huygens, Newton, Planck, Einstein and many other great scientists solved one mystery after another, from the reason underlying the law of refraction to the puzzle of the photoelectric effect. The journey ends with the solution to the most challenging mystery of all: that light is both a wave and a particle — a fascinating finale.
Download or read book The Discovery of Nature written by Albert W. Bettex and published by . This book was released on 1965 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Illustrated account of man's striving for scientific knowledge.
