جاذبه وجود ندارد: معمایی برای قرن بیست و یکم

Every scientific fact begins as an opinion about the unknown—a theory—that becomes fact as evidence piles up to support it. But what if two theories exist that correspond perfectly to observed phenomena and they cannot be reconciled with each other? Can theory become fact? Such is the dilemma in contemporary physics. In seeking to understand the mechanisms of the universe, physicists have arrived at two conflicting theories: one explains the mystery of gravity through a precise model of space and time, and the other explains the mystery of matter via the behavior of quantum particles. Each theory reigns in its own domain. But 13.8 billion years ago, when the universe first came into being, gravity and matter belonged to a single realm. Can these theories be united, and if so, what facts will be revealed? This, contends Vincent Icke, is the central puzzle facing physics in our century. Combining Icke’s expertise with a robust argument and intellectual playfulness, __Gravity Does Not Exist__ makes a notoriously difficult subject accessible to all readers interested in a deeper understanding of the universe in which we live. Every scientific fact was born as an opinion about the unknown - a hypothesis. Opinion gradually becomes fact as evidence piles up to support a theory. But what if there are two theories, each of which has produced a myriad of things that correspond perfectly to the phenomena but can't be combined into one? One theory replaced the mystery of gravity with a precise model of space and time. The other theory replaced the mystery of matter with a description of quantum particles. As we understand our universe, we keep each in its own domain: space and time for very large things, particles for the very small ones. However, 13.8 billion years ago, those two incompatible domains belonged to a single realm. Who in the current or future generations of physicists will crack this seemingly impossible puzzle? This, contends the author, is not just a big question, but the biggest question in physics in our century. Combining Ickes's first-hand knowledge with a robust argument and intellectual playfulness, this fascinating book succeeds in making a notoriously difficult subject accessible to all readers interested in a better grasp of our universe.-Vincent Icke is professor of theoretical astrophysics at Universiteit Leiden, professor of cosmology at the University of Amsterdam, visual artist, and writer. Bron: Flaptekst, uitgeversinformatie Every scientific fact was born as an opinion about the unknown - a hypothesis. Opinion gradually becomes fact as evidence piles up to support a theory. But what if there are two theories, each of which has produced a myriad of things that correspond perfectly to the phenomena but can't be combined into one? One theory replaced the mystery of gravity with a precise model of space and time. The other theory replaced the mystery of matter with a description of quantum particles. As we understand our universe, we keep each in its own domain: space and time for very large things, particles for the very small ones. However, 13.8 billion years ago, those two incompatible domains belonged to a single realm. Who in the current or future generations of physicists will crack this seemingly impossible puzzle? This, contends the author, is not just a big question, but the biggest question in physics in our century. Combining Ickes's first-hand knowledge with a robust argument and intellectual playfulness, this fascinating book succeeds in making a notoriously difficult subject accessible to all readers interested in a better grasp of our universe.Watch the Book Trailer What We Know Always Leads To What We Do Not Know. This Book Follows The Historical Path Of The Most Brilliant Theories In Physics, And The People Who Made Them: The General Theory Of Relativity And Quantum Field Theory. The Paths Of These Very Successful Descriptions Of The Universe Intersect. When The Two Theories Collide, The Light That They Shed On The Understanding Of Our World Is Extinguished. We Do Not Know The Road Ahead. Can They Be Merged Into A Single Theory? Nobody Has An Answer Yet. Where Are The Clues? In Theory, Experiments, Mathematics, Or Cosmology? Is The Most Important Physics Question Of Our Time Too Difficult, Or Is The Answer Already Growing In The Mind Of A Young Woman Or Man Somewhere In The World?--book Jacket. The Process Of Measurement -- The Process Of Progress -- Laws Ain't -- Motion -- Huygens's Relativity -- Acceleration -- Gravity -- Absoluteness Theory -- Gravity Does Not Exist -- Reflections -- Jes' Rollin' Along -- Feynman's Web -- A Twist To The Tale -- Questions For The 21st Century -- Small Moves, Ellie -- Thanks. Vincent Icke. Includes Bibliographical References.

This volume approaches three key concepts in Roman history - gender, memory and identity - and demonstrates the significance of their interaction in all social levels and during all periods of Imperial Rome. When societies, as well as individuals, form their identities, remembrance and references to the past play a significant role.