单词 | field theory |
例句 | Both men were flying blind, neither having had the slightest training in electrical field theory. Big Science 2015-07-07T00:00:00Z Krauss, in essence, thinks the laws of quantum field theory ordain the existence of a universe. Q. & A.: Jim Holt on Why the World Exists 2012-07-18T14:09:41Z The various themes don’t entirely cohere, but then Arias isn’t developing a unified field theory. In the galleries: Delineating a cultural frontier 2016-10-27T04:00:00Z Maybe he's trying to take in the nuances of quantum field theory, or maybe someone's just showing him where milk comes from. Abduction ? Taylor Lautner gets shirty 2011-08-17T08:46:55Z There's talk of the theory of gravity and a "unified field theory": basically, the physicists' vision of a grand design for the universe. A physicist's view on The Physicists 2012-06-17T18:30:01Z “Louis C. K. was this close to coming up with the unified field theory,” he said in 2012. Andy Kindler Gives the Funny Business Its Annual Review 2015-07-22T04:00:00Z Perhaps he was wise not to strain for a unified field theory, but a reader may hunger for fewer meandering quotations from friends and more analysis from the author. The Lives of Four Andover Grads Cut Short 2019-07-29T04:00:00Z Impressive as the crows may be, they aren't going to work out electromagnetic field theory. The Eerie Silence by Paul Davies | Book review 2010-03-28T00:15:00Z Conformal field theory acts as a bridge between different fields of physics: the underlying math is used in string theory, condensed matter physics and quantum statistical mechanics. Bizarre Quantum Theory Explains Why Your Coffee Takes So Long to Drip through a Narrow Filter 2023-09-25T04:00:00Z Tong ended up connecting the fluids on Earth to the quantum Hall effect again, but through a different approach, using the language of quantum field theory. Quantum Physics Can Explain Earth’s Weather 2023-08-24T04:00:00Z The trouble is that the predicted value for the cosmological constant from calculations using quantum field theory produces a number that is too large by a factor of 10120. The Most Surprising Discoveries in Physics 2023-07-27T04:00:00Z In the Caltech interview, he recalled a paper in which he suggested that gravity could solve some troubling infinities that were showing up in the quantum field theory of electrodynamics. Stanley Deser, Whose Ideas on Gravity Help Explain the Universe, Dies at 92 2023-05-08T04:00:00Z Turner: As far as we know, the basic building blocks of matter are quarks and leptons; the rules that govern them are described by the quantum field theory called the Standard Model. Where is Physics Headed (and How Soon Do We Get There)? 2023-01-24T05:00:00Z In the late 1960s and early 1970s it was realized that these phase transitions can be described by the same kind of quantum field theory that had already been developed to understand elementary particle physics. Bizarre Quantum Theory Explains Why Your Coffee Takes So Long to Drip through a Narrow Filter 2023-09-25T04:00:00Z According to the tenets of quantum field theory—an uneasy union between Einstein’s special theory of relativity and quantum mechanics used to model the behavior of subatomic particles—empty space isn’t actually empty. 6 Times Quantum Physics Blew Our Minds in 2022 2022-12-19T05:00:00Z Feynman integrals have plagued particle theorists since the rise of quantum field theory in the mid–20th century. Method for solving notorious calculus problems speeds particle physics computations 2022-11-30T05:00:00Z Crucially, the quantum field theory describing D-branes was strongly coupled: particles and fields in the theory interacted strongly with each other. Is Our Universe a Hologram? Physicists Debate Famous Idea on Its 25th Anniversary 2022-11-30T05:00:00Z But, he adds, “quantum mechanics is not our best theory of nature. Quantum field theory is a deeper and more accurate theory.” Quantum Particles Aren’t Spinning. So Where Does Their Spin Come From? 2022-11-22T05:00:00Z A good example is superconductivity in a metal, which is described by quantum field theory. Bizarre Quantum Theory Explains Why Your Coffee Takes So Long to Drip through a Narrow Filter 2023-09-25T04:00:00Z “I don’t expect someone in middle school to walk into a quantum field theory class and understand tensor math, right?” Department of Energy requires plans to promote diversity from grant applicants 2022-10-04T04:00:00Z Just as valence bond theory explains many aspects of bonding in main group chemistry, crystal field theory is useful in understanding and predicting the behavior of transition metal complexes. Chemistry 2019-02-14T00:00:00Z Adami sees the new research as an elegant synthesis of several different disciplines, including classical physics, atomic physics and quantum field theory. Physicists Find a Shortcut to Seeing an Elusive Quantum Glow 2022-05-20T04:00:00Z Quantum field theory is where the quantum world of subatomic particles meets the most famous equation in the world: E = mc2, which encapsulates Einstein’s discovery that matter can turn into energy and vice versa. Quantum Particles Aren’t Spinning. So Where Does Their Spin Come From? 2022-11-22T05:00:00Z I realized that conformational field theory was a good model for this kind of process. Bizarre Quantum Theory Explains Why Your Coffee Takes So Long to Drip through a Narrow Filter 2023-09-25T04:00:00Z In the paper, Kapustin and Witten wrote that they aimed to “show how this program can be understood as a chapter in quantum field theory.” The Evolving Quest for a Grand Unified Theory of Mathematics 2022-03-21T04:00:00Z In this system, the entire region of spacetime is built out of interactions between the components of the quantum system in the conformal field theory. What Is Spacetime Really Made Of? 2022-01-18T05:00:00Z When it comes to unifying quantum field theory and gravity, string theory remains far more popular than competing approaches, such as loop quantum gravity. ArXiv.org Reaches a Milestone and a Reckoning 2022-01-10T05:00:00Z Quantum field theory handles this phenomenon by describing particles as arising out of fields that pervade all of spacetime, even empty space. Quantum Particles Aren’t Spinning. So Where Does Their Spin Come From? 2022-11-22T05:00:00Z Dr. Parisi is an Italian theoretical physicist who was born in 1948 in Rome and whose research has focused on quantum field theory and complex systems. Nobel Prize in Physics Awarded for Study of Humanity’s Role in Changing Climate 2021-10-05T04:00:00Z Elliott notes that viewing quantum field theory from a mathematical perspective can help glean new information about the structures that are foundational to it. The Evolving Quest for a Grand Unified Theory of Mathematics 2022-03-21T04:00:00Z Now physicists seek a single theory that fuses general relativity, which describes gravity, with quantum field theory, which accounts for electromagnetism and the nuclear forces. Science Should Not Try to Absorb Religion and Other Ways of Knowing 2021-06-25T04:00:00Z Nothing about quantum field theory was falsified when its prediction didn't match astronomical measurements, and the theory is still as useful as it ever was. The Cosmological Constant Is Physics’ Most Embarrassing Problem 2021-02-01T05:00:00Z “But in quantum field theory, for every particle, there’s a way of thinking about it as a field.” Quantum Particles Aren’t Spinning. So Where Does Their Spin Come From? 2022-11-22T05:00:00Z “We said, ‘I’m not going to tell you anything about quantum field theory; I’m not going to tell you what a quark or gluon is at a fundamental level,’” he said. Can a Computer Devise a Theory of Everything? 2020-11-23T05:00:00Z Adding gravity to the act, the issue featured an essay by Einstein that propounded a comprehensive field theory that would hold physics together. How an Article about the H-Bomb Landed Scientific American in the Middle of the Red Scare 2020-08-21T04:00:00Z After a tantalizing chapter on scale, he analyses space, time, energy, matter, quanta, thermodynamics and various attempts to unify the general theory of relativity with quantum field theory — although he never defines a black hole. The neuroscience of navigation, a world of ice, and a black inventor reconstructed: Books in brief 2020-03-31T04:00:00Z They also greatly exceed the range for which some of the theoretically derived effective NN interactions — including those derived from a much-used approach known as chiral effective field theory — might be expected to be reliable. High-energy-electron scattering probes the strong nuclear interaction at close range 2020-02-25T05:00:00Z “Sebens is very much on the right track, or at least doing something very, very useful in the sense that he’s taking the field-ness of quantum field theory very seriously.” Quantum Particles Aren’t Spinning. So Where Does Their Spin Come From? 2022-11-22T05:00:00Z Frederick M. Cooper, a PhD physicist who specialized in quantum field theory, said on Medium that of all his friends, Dr. Feigenbaum “was the most unusual and brilliant.” Mitchell Feigenbaum, an architect of chaos theory, dies at 74 2019-07-12T04:00:00Z Researchers at the institute’s School of Natural Sciences explore questions in astrophysics, biology, quantum field theory and mathematical physics. Top 10 academic institutions in 2018: normalized 2019-06-18T04:00:00Z I remember once talking to him about something in quantum field theory called the beta function. Remembering Murray Gell-Mann 2019-06-06T04:00:00Z In string theory, a “solution” implies a vacuum of spacetime that is governed by Einstein’s theory of gravity coupled to a quantum field theory. Found: A Quadrillion Ways for String Theory to Make Our Universe 2019-03-28T04:00:00Z In later work, she helped put a rigorous mathematical underpinning to techniques widely used by physicists in quantum field theory to describe fundamental interactions between particles and forces. Karen Uhlenbeck Is First Woman to Win Abel Prize for Mathematics 2019-03-19T04:00:00Z In physics, a gauge theory is a kind of field theory, formulated in the language of the geometry of fiber bundles; the simplest example is electromagnetism. Founder of geometric analysis honored with Abel Prize 2019-03-19T04:00:00Z The handwritten page was part of an appendix of a 1930 paper written by Einstein towards a unified field theory. Famous Einstein 'puzzle' solved as missing page comes to light 2019-03-06T05:00:00Z I vividly recall the ‘aha’ moment when Zhang, drawing on his background in formal field theory, showed how the basic physics of these states follows simply and intuitively from the resulting field equations. Shoucheng Zhang (1963–2018) 2019-01-22T05:00:00Z What she calls her unified field theory holds that the venom contains proteins that puncture red blood cells and release potassium, disrupting the electrical rhythms that keep the heart beating. Jellyfish almost killed this scientist. Now, she wants to save others from their fatal venom 2018-11-08T05:00:00Z Dr. Uhlenbeck later worked on what are called gauge theories, used by physicists in quantum field theory to describe interactions of subatomic particles. Karen Uhlenbeck Is First Woman to Win Abel Prize for Mathematics 2019-03-19T04:00:00Z String theorists tried to use strings to knit together quantum field theory, black holes and information theory. Do Our Questions Create the World? 2018-06-09T04:00:00Z “The emergence of a big spacetime is directly tied into the entangling of these field theory degrees of freedom,” Van Raamsdonk says. What Is Spacetime? 2018-05-24T04:00:00Z And since Darwin we have known that we were designed to reproduce, not to understand neural coding or quantum field theory. Is Science Hitting a Wall? 2018-04-14T04:00:00Z The neglect and ignorance of Schwinger’s formulation of quantum field theory is why I wrote my book. Opinion | How will we remember Stephen Hawking? 2018-03-23T04:00:00Z During a visit to Harvard, I talked with Sidney Coleman, one of the leading thinkers in the esoteric world of quantum field theory. In Memoriam: Joe Polchinski, 1954-2018 2018-02-08T05:00:00Z Capra actually was a theoretical physicist, yet the book just missed a revolution in physics with the widespread acceptance of quantum field theory and The Standard Model. Opinion | Buddhism Is More ‘Western’ Than You Think 2017-11-06T05:00:00Z He thereby set out to find a mechanistic, unified field theory that would supersede quantum mechanics. This Man Was Einstein and Bohr's Relationship Counselor 2017-11-13T05:00:00Z The latest volume concerns the strange world that Albert Einstein discovered by combining James Clerk Maxwell's field theory with Isaac Newton's mechanics — a world in which moving fast makes time compress and lengths shorten. Relativity: Final ascent of physics : Nature : Nature Research 2017-09-19T04:00:00Z “In relativistic quantum field theory, energy and mass flows become the same,” he says. Big Bang gravitational effect observed in lab crystal 2017-07-19T04:00:00Z For example, he expresses unease about 'gauge–gravity duality', the claim that string theory is empirically equivalent to a quantum field theory in a lower-dimensional space. Theoretical physics: The emperor's new physics : Nature : Nature Research 2016-10-04T04:00:00Z Unfortunately, many scientists, including the renowned Stephen Hawking, either don’t understand or don’t accept quantum field theory in its true fields-only sense. Physics that makes sense 2016-06-09T04:00:00Z One jettisoned the principle of equivalence between acceleration and gravity that lies at the heart of general relativity; others violated aspects of quantum field theory, which describes the interactions of subatomic particles. We want information 2016-06-02T04:00:00Z Understanding the theoretical minimum in special relativity and classical field theory, however, itself demands a certain minimum of preparation and research. Relativity: Final ascent of physics : Nature : Nature Research 2017-09-19T04:00:00Z Quantum field theory provides a unified perspective on the subatomic realm. Physics: Material to meaning : Nature : Nature Publishing Group 2016-05-03T04:00:00Z Definitions vary but let’s say it’s one big narrative that connects the meaning of events to a belief thought to be an essential truth, the storytelling equivalent of the unified field theory in physics. The Kochs’ plot against America: How the billionaire industrialists are systematically dismantling American democratic ideals 2016-02-11T05:00:00Z It is called quantum field theory, and it describes a world made of fields. Physics that makes sense 2016-06-09T04:00:00Z Any theory of gravity is not a local field theory. How Einstein Revealed the Universe's Strange "Nonlocality" 2015-11-11T05:00:00Z This inspired us to introduce to field theory some new particles called scalar bosons, which have the property of being able to form condensates, as occurs in phase transitions. Q&A: Boson beginnings : Nature : Nature Publishing Group 2015-10-20T04:00:00Z "It’s a complete misunderstanding of quantum field theory," he says. Physics be damned, we can’t stop obsessing over NASA’s ‘impossible engine' 2015-05-11T04:00:00Z Second, as with all physical theories, quantum field theory is a model—a human contrivance. Physicists Are Philosophers, Too 2015-05-08T04:00:00Z Those following Einstein’s career knew that he been working for decades on a unified field theory. “Albert is an old fool”: Einstein vs Schrödinger in battle of the Nobel laureates 2015-04-18T04:00:00Z This led to the discovery of a cornucopia of new particles, which eventually led to a quantum field theory called the Standard Model. Why Particle Physiucs Matters To Manufacturers 2015-03-17T04:00:00Z The low value of the cosmological constant — known to be 120 factors of 10 smaller than the value predicted by quantum field theory — is difficult to explain, for instance. Scientific method: Defend the integrity of physics 2014-12-15T05:00:00Z But the greater pursuit is for a kind of unified field theory in which psychology and physiology—the subjective and the material realms—would finally be integrated. How Everyone Gets Pavlov Wrong 2014-11-17T05:00:00Z In physics, a unified field theory is an attempt to explain with a single hypothesis the behavior of several fields. From cupcakes to the police, fed up with government Research into the nature of the atom led to the development of quantum field theory beginning in the 1920s. Vinton G. Cerf: The Value of "Investment by the U.S. Government" Cannot Be Overstated 2014-07-22T04:00:00Z After he joined the Brown faculty in the late 1960s, his work involved quantum field theory and computer applications. Gerald Guralnik, 77, a ‘God Particle’ Pioneer, Dies 2014-05-03T23:50:31Z For his research on quantum field theory, he needed to bring together his hotchpotch of computer code and data-analysis tools. Research tools: Jump off the page 2014-03-26T18:20:39.905Z Most physicists were more interested in quantum mechanics than general relativity–and Einstein was more preoccupied with developing a unified field theory, which proved to be a dead end. New Discovery Reveals Einstein Tried To Devise A Steady State Model Of The Universe 2014-02-25T15:08:00Z Further in the future, the researchers say, applying effective field theory to even bigger datasets could reveal properties of the inflation field, which would help physicists build a theory to explain it. Big Bang Secrets Swirling in a Fluid Universe 2014-02-21T16:00:00Z The same techniques of field theory that led to such spectacular successes in particle physics – culminating in the Standard Model – failed abysmally when applied to relativity. “The Perfect Theory”: The story of general relativity, and what makes something a science 2014-02-05T20:15:35Z Quantum field theory is a group of mathematical structures. Schrodinger’s Rats and The Search for Ultimate Reality [Excerpt] 2014-01-31T15:00:00Z Think of this as the “particle content” of our quantum field theory. The Holy Grail of Quantum Physics on Your Kitchen Table [Excerpt] 2014-01-13T20:51:56.130Z Adams works at the intersection of fluid dynamics, quantum field theory and string theory. Physics Week in Review: November 23, 2013 2013-11-24T12:45:05.920Z For example, so far, cosmologists have only developed an effective field theory model of the evolution of dark matter, an invisible substance that makes up roughly six-sevenths of the matter in the universe. Big Bang Secrets Swirling in a Fluid Universe 2014-02-21T16:00:00Z This a quantum field theory that deals with the electromagnetic field and its interaction with electrically charged particles. And Let There Be "Molecules" of Light 2013-10-14T20:45:24.920Z But here’s a recipe I found online: Think of this as the “particle content” of our quantum field theory. The Holy Grail of Quantum Physics on Your Kitchen Table [Excerpt] 2013-09-27T20:15:02.483Z Either information can be lost after all; Einstein’s principle of equivalence is wrong; or quantum field theory, which describes how elementary particles and forces interact, is wrong and needs fixing. A Black Hole Mystery Wrapped in a Firewall Paradox 2013-08-12T20:46:10Z Dr. Wilson went on to apply the same divide-and-conquer strategy to quantum field theory, the mathematical language that underlies the study of the most elementary particles and fundamental forces in nature. Kenneth Wilson, Nobel Physicist, Dies at 77 2013-06-21T02:14:58Z Effective field theory fixes the problem by accounting for the interplay between scales only down to a few times the distance between galaxies. Big Bang Secrets Swirling in a Fluid Universe 2014-02-21T16:00:00Z Sean Carroll is a theoretical physicist at the California Institute of Technology, specializing in cosmology and field theory. Live Chat: The Science of Superman 2013-06-19T16:21:50Z My search is for a personal unified field theory, the key idea that will suddenly get my weak limbs and soft core moving with athletic cohesion, leading to pure contact, power, accuracy and repeatability. The Solitary Search Starts Again 2013-04-09T04:00:00Z If space is indeed smooth, as Einstein postulated, and if quantum field theory is correct, Alice must be entangled with another particle, Ted, who is just inside the black hole. A Black Hole Mystery Wrapped in a Firewall Paradox 2013-08-12T20:46:10Z Holt certainly agrees that quantum field theory is the best available description of our known universe, but he thinks that Krauss’s explanation is incomplete. Physicists Debate the Many Varieties of Nothingness 2013-03-22T22:45:05.650Z Hence, what is known as the Feynman diagram was invented to deal with the problem of infinite divergences in the mathematics of field theory. The Science and Art of the Diagrams: Culturing Physics and Mathematics, Part 1 2013-03-22T12:45:00.207Z I certainly saw elegance when I studied crystal field theory. Truth and beauty in chemistry 2013-01-25T00:15:10.973Z Now they must choose to sacrifice either unitarity or No Drama, or undertake a radical modification of quantum field theory. Black Hole Firewalls Confound Theoretical Physicists 2012-12-21T18:15:00.203Z But the magic of 'gauge field theory' led us from symmetries to an actual dynamical theory, the standard model, which describes the situation in detail. Perspective: Meeting of minds 2012-11-23T15:21:02.267Z You see the laws of quantum field theory as divine commands. Physicists Debate the Many Varieties of Nothingness 2013-03-22T22:45:05.650Z It is the same case for particle physicists who also have to deal with the problem of infinities in quantum field theory. The Science and Art of the Diagrams: Culturing Physics and Mathematics, Part 1 2013-03-22T12:45:00.207Z In quantum field theory, whenever there is a field there is an associated particle, for example the electromagnetic field has the photon. Coming to terms with the Higgs 2012-10-10T21:51:25.443Z This is a kind of unified field theory of solving climate change – get the treaty right; the treaty dictates national action; and the problem gets solved. Don t forget the global in global climate change 2012-10-08T19:45:03.663Z Seiberg, of the Institute for Advanced Study, “for major contributions to our understanding of quantum field theory and string theory.” 9 Scientists Get $3M Each In Billionaire Milner's Physics Prize 2012-07-31T17:16:46Z Their deep and important contributions to perturbative and non-perturbative quantum field theory and theoretical physics, in general, are well-known and now constitute standard textbook material. 30 under 30: Exploring String Theory to Figure Out How Things Work 2012-06-19T12:45:04.337Z The theories they seek to unify, quantum field theory and Einstein’s general theory of relativity, are well-grounded and well-tested, yet mutually incompatible. Is Dark Matter a Glimpse of a Deeper Level of Reality? 2012-06-11T22:15:00.430Z The two theories that need to be unified, quantum field theory and Einstein’s general theory of relativity, are both highly successful. Which of the basic assumptions of modern physics are wrong? Announcing the fourth Foundational Questions Institute essay contest 2012-05-24T18:15:00.253Z In the de Sitter case, the corresponding 3-D boundary is governed by a type of field theory in which time does not operate; it is static. Where Do Space and Time Come From? New Theory Offers Answers, If Only Physicists Can Figure It Out 2012-04-12T21:15:02.897Z One of the most cherished goals of physics is a “unified field theory,” which would explain the relationships among these forces. Physicists hope to find the Higgs boson, key to unified field theory, this year 2012-04-02T19:15:00Z The physician-enthusiast generally offers “a unified field theory of a vague syndrome, providing a clear and coherent explanation for its many confusing symptoms,” she writes. The Mystery of 18 Twitching Teenagers in Le Roy 2012-03-07T21:11:37Z Electromagnetism is a standard weeder course in graduate school, and magnetohydrodynamics ranks up there with quantum field theory as the hardest subject known to mortal minds. Magnetoastrocoolness: How Cosmic Magnetic Fields Shape Planetary Systems 2012-01-13T16:15:05.427Z Under the standard model, this should not be possible, because relativistic quantum field theory shows that the Higgs’ mass must experience quantum corrections that are much, much larger than the mass itself. Particle physics is at a turning point 2011-12-21T18:20:06.280Z According to quantum field theory — the theory that combines quantum mechanics and special relativity — masses would be expected to be ten thousand trillion times bigger. Physicists Anxiously Await News of the ?God Particle? 2011-12-12T03:59:24Z However, the theorem seemed to be have been killed off in 2008, when two physicists found a counter-example: a quantum field theory that didn't obey the rule. Proof Found for Unifying Quantum Principle 2011-11-14T21:15:02.683Z An internationally renowned expert in string theory, a press release issued by IAS today says Dijkgraaf "found surprising and deep connections between matrix models, string theory, topological string theory and supersymmetric quantum field theory." Dutch Physicist and Science Educator Robbert Dijkgraaf to Head IAS 2011-11-14T18:56:31Z He also minored in relativistic quantum field theory and solid state and optical physics. Todd Rider Has a Kill Switch for Viruses 2011-11-03T20:50:54Z For Einstein, the gravitational instability of atoms was one of many reasons to search for a unified field theory. Why Is Quantum Gravity So Hard? And Why Did Stalin Execute the Man Who Pioneered the Subject? 2011-07-14T11:45:00.427Z There was no unified field theory of South African violence, just “a variety of factors” sounding overly familiar: too many guns, too much poverty, the warp of history. Magazine Preview: Watching the Murder of an Innocent Man 2011-06-02T14:40:59Z But the Holographic Principle means that quantum field theory also breaks down on large scales. Space Is an Elaborate Illusion 2011-05-17T15:15:00.257Z Although this is true, and remains an open problem, the formulation of the theory is compatible with the usual methods of quantum field theory. Garrett Lisi responds to criticism of his proposed unified theory of physics 2011-05-04T13:15:11.570Z Davies' research focuses on cosmology, quantum field theory and astrobiology. Scientists propose one-way trips to Mars 2010-11-16T00:06:00Z Later I enjoyed his papers when I got to field theory. Scientists React to a Nobelist's Climate Thoughts 2010-09-17T22:30:00Z The consequences of finding those mysterious particles could "affect our conception of who we are in the universe," said Kaku, co-founder of string field theory and author of the book "Physics of the Impossible." Atom Smasher Will Help Reveal 'The Beginning' 2010-03-31T14:19:00Z This intuition is formalized in the modern theory of matter, known as quantum field theory. Space Is an Elaborate Illusion 2011-05-17T15:15:00.257Z As E8 Theory develops, I expect renormalization and other quantum field theory or loop quantum gravity calculations will be carried out successfully. Garrett Lisi responds to criticism of his proposed unified theory of physics 2011-05-04T13:15:11.570Z It’s too diverse a cast of characters, flaws and misdeeds to fit any unified field theory. Our Towns: In Governors, the Averages Aren?t Good 2010-03-04T01:34:00Z I don't imagine so, but he's the head of electronics and I know he's been working on the unified field theory just as a hobby. All That Goes Up UFO propulsion comes into the picture when one remembers Dr. Einstein's unified field theory, concerning the relationship between electro-magnetism and gravitation. The Report on Unidentified Flying Objects |
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