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.
This book introduces readers to the science behind gravity, explaining the physics behind the phenomenon through graphs and activities. Easy-to-understand summaries following each chapter highlights the most important points for review.
This book discusses gravitational force and presents experiments in balancing fruit and making a ramp racer, a water clock, a balloon rocket, and a ring wing glider.
An ideal introduction to Einstein's general theory of relativity This unique textbook provides an accessible introduction to Einstein's general theory of relativity, a subject of breathtaking beauty and supreme importance in physics. With his trademark blend of wit and incisiveness, A. Zee guides readers from the fundamentals of Newtonian mechanics to the most exciting frontiers of research today, including de Sitter and anti-de Sitter spacetimes, Kaluza-Klein theory, and brane worlds. Unlike other books on Einstein gravity, this book emphasizes the action principle and group theory as guides in constructing physical theories. Zee treats various topics in a spiral style that is easy on beginners, and includes anecdotes from the history of physics that will appeal to students and experts alike. He takes a friendly approach to the required mathematics, yet does not shy away from more advanced mathematical topics such as differential forms. The extensive discussion of black holes includes rotating and extremal black holes and Hawking radiation. The ideal textbook for undergraduate and graduate students, Einstein Gravity in a Nutshell also provides an essential resource for professional physicists and is accessible to anyone familiar with classical mechanics and electromagnetism. It features numerous exercises as well as detailed appendices covering a multitude of topics not readily found elsewhere. Provides an accessible introduction to Einstein's general theory of relativity Guides readers from Newtonian mechanics to the frontiers of modern research Emphasizes symmetry and the Einstein-Hilbert action Covers topics not found in standard textbooks on Einstein gravity Includes interesting historical asides Features numerous exercises and detailed appendices Ideal for students, physicists, and scientifically minded lay readers Solutions manual (available only to teachers)
2023 Edition. The future can finally begin! I have noticed for a long time that mankind can produce since about one century only what was described theoretically before. But a new physical law was not found any more, which means an already visible end of the horizon. I came across all the ideas described here indirectly and above all unintentionally, but for a long time I did not have the courage to actively disseminate my findings. I hesitated also because I described indeed logically, but rather philosophically. According to my theory, matter dust should not be subject to gravity because comets leave behind a dust tail, among other things. Not even on the Earth. But the matter dust seems to settle on the earth. And now that I have finally found the proof, I really need to present my ideas. The proof was right in front of me, only I didn't think about fluids.... Now I will also actively spread these ideas, because this must be investigated. Will the fine dust from exhaust fumes, nuclear reactors, smoke and viruses float forever and everywhere? If the small particles are not subject to gravity, this will have enormous and long-lasting effects. A selection of the points covered in the book: - Storms disrupt gravity. I explain the reason for this in as much detail as I could throughout the book. - Gravity is the effect of space deformation on matter. Very short explanation: The matter behaves almost exactly like the light in the curved (deformed) space. I explain the principle and, using real examples, how it works. What moves the meteors and our space probes after the thrusters are turned off? That is the drive mechanism, which is also behind gravity. For example, in this context, not everything on Earth is subject to gravity. Millions of tons of fine water particles, which we know as fog and clouds, are not subject to gravity. This is weightlessness before our eyes. - The natural cycle can only work because gravity does not always act on the earth! - The book explains in detail what gravity is, how it works and where in the universe gravity occurs. For example, gravity has nothing to do with matter and arises not only around celestial bodies, but especially in space for no visible reason. The meteorites, for example, would gradually slow down and eventually stop flying around in space without these gravity clouds. - There is no limit like the speed of light, but only a space-time limit. I explain to it what space-time is and why. - Light and matter can move faster than the speed of light, concerning the light this is already proved. Seriously, the explanation to it is included. - Space-time, velocity and gravity are properties of space. The detailed explanation is included. - Black holes do not contain matter. They also have only a weak opposing gravity. Moreover, the black holes melt the matter near them. The detailed explanation and much more about this are also included. - I also explain why stars were formed only in galaxy spiral arms or around black holes. In addition, also how planets, stars are formed, and when gravity occurs. - Intergalactic travel could be possible, and a spaceship must necessarily have the shape of a flying saucer. Are the sightings real? The detailed explanation is included. - It is irrefutably excluded that these forms exist in the universe or elsewhere: Nothingness, Infinity and Coincidence. Konstantin T. Salmann
Gravitys cause has baffled the world from the beginning. The mystery has been solved. Gravitys cause is proven in this book. This book combines the great works of Newton, Einstein, Kepler, Galileo and Copernicus. Individually, they were unable to determine the cause of gravity. However, when combined, their ideas gel into a complete proof of gravitys cause. It is proven several ways - mechanically, mathematically, visually and by physical behavior. There are several breakthroughs which provide the proof of gravitys cause. You will be amazed as gravitys mystery is unraveled and proven. You will learn how gravity works and be able to understand it.
This book invites the reader to understand our Universe, not just marvel at it. From the clock-like motions of the planets to the catastrophic collapse of a star into a black hole, gravity controls the Universe. Gravity is central to modern physics, helping to answer the deepest questions about the nature of time, the origin of the Universe and the unification of the forces of nature. Linking key experiments and observations through careful physical reasoning, the author builds the reader's insight step-by-step from simple but profound facts about gravity on Earth to the frontiers of research. Topics covered include the nature of stars and galaxies, the mysteries of dark matter and dark energy, black holes, gravitational waves, inflation and the Big Bang. Suitable for general readers and for undergraduate courses, the treatment uses only high-school level mathematics, supplemented by optional computer programs, to explain the laws of physics governing gravity.
