Resultaten voor 'antonino del popolo'
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Advanced General Relativity: A Graduate Course - Volume 1
The book aims to expose graduate students and young researchers to a range of advanced topics in gravitation, while presenting the calculations in as explicit and detailed a manner as possible.The first volume begins by examining the consequences of diffeomorphism invariance for solutions of the Einstein field equations, illustrated through various formulations of the Schwarzschild solution. This is followed by a detailed construction of Carter-Penrose conformal diagrams, together with remarks highlighting differences from the presentations commonly found in standard textbooks.The chapter on geodesics and congruences introduces the spacetime splittings of Ellis, Clarkson, and Hayward, as well as kinematic and dynamical approaches based on optical scalars—tools that are pervasive in cosmology, horizon studies, gravitational lensing, and gravitational-wave physics. This chapter also includes a section on the most commonly used energy conditions and on fluid forms of the energy-momentum tensor.Subsequently, following a discussion of horizons, trapping surfaces, and the surface gravity of Killing horizons, the book presents a detailed exposition of several singularity theorems, including their key concepts and selected proofs. The chapter on the Kerr solution addresses issues of conserved charges and integration in gravity, invariants, and the global properties of the spacetime, including horizons and singularities, as well as its conformal diagram and geodesic structure. This naturally leads to the area theorem and black hole thermodynamics.The discussion then proceeds to relativistic thermodynamics, with a chapter devoted to the Eckart and Israel-Stewart formalisms. The book concludes with two technical chapters: one on the analytical mechanics approach to geodesics using the Hamilton-Jacobi formalism, and another on the Mathisson-Papapetrou-Dixon equations describing the motion of spinning bodies in general relativity.
€ 166,50 -
Le grandi domande della scienza
Il tempo non ha mutato la peculiarità dell'uomo di interrogarsi su quello che lo circonda e sulle sue origini. I bambini sono la manifestazione più evidente di questa innata curiosità dell'essere umano. Fra le prime domande che ci rivolgono è da dove derivi quello che c'è intorno a noi, chi l'ha fatto, da dove proveniamo. Sono tante le domande alle quali non abbiamo ancora una risposta e che tutti ci siamo prima o poi chiesti. Perché esiste qualcosa anziché niente? L'Universo si è originato per caso o c'è un progetto? Sarà eterno o avrà una fine? Esistono altri universi? Cosa sono la massa e l'energia oscura? Come si è originata la vita? Siamo soli nell'Universo? Il mistero dell'esistenza induce nell'uomo un senso di meraviglia e di stupore che lo portano a porsi in continuazione interrogativi. In questo libro mostreremo come le domande più semplici portino alle più grandi scoperte dell'umanità, quali la teoria della relatività e le sue conseguenze quali i viaggi nel tempo, o i buchi neri...
€ 43,50 -
La vita extraterrestre
Non siamo soliDal 1995, abbiamo scoperto che i pianeti sono comuni, aumentando le possibilità di vita microscopica o civiltà evolute. L'Universo contiene miliardi di miliardi di pianeti, molti dei quali potrebbero essere abitabili. Finora, le ricerche di segnali di altre civiltà non hanno avuto successo, ma ciò non esclude la loro esistenza.
€ 36,50 -
Extraterrestrial Life
We are not aloneHowever, bacterial life likely existed on Mars and might still exist today. While not all planets are suitable for life, billions of habitable planets exist in our galaxy alone, some even classified as super-habitable, possessing conditions more favorable for life than Earth.
€ 49,50 -
Big Questions Of Science, The
Of all the species that live on this planet, as far as we know, man is the only one capable of awareness; observing the sky, understanding its beauty, and asking questions about the meaning of life and that of death, on the beginning and the end, both about the Universe and man himself. The questions range in all directions: why is there something instead of nothing? Who is the architect of reality, and why does it appear to us as it does, rather than in some other way? What's the point of all this? Where does life originate, and what are the origins of the Universe that encompasses it?This book aims to introduce and address the questions that are often asked and answer with the knowledge that science provides us. Where does all the matter we are made of come from and what constitutes the Universe? Is it true that there is matter and energy whose existence can be intuited only indirectly, as the existence of the wind is deduced from leaves' motion? Einstein was right in his revolutionary description of reality, on nature of space and time, inextricable units in their apparent dichotomy. Does each observer truly observe a 'different' time from another observer? Can we move back and forth in the time? How space and time are modified by astronomical objects such as black holes, and what is the nature of the latter? Will time and the Universe end and how did they originate? The Universe is incredibly vast, housing hundreds of billions of galaxies within the observable Universe alone. Beyond what we can observe, there may exist an unimaginably vast expanse that extends infinitely and beyond our imagination. Our Universe, enormous as it may be, is not the only one. That's all predicted by certain cosmological and physical theories. Is life unique to Earth, or does the Universe harbor other forms of life that remain undiscovered to us?
€ 76,50 -
God Or Science?: Is Science Denying God?
Does science deny God? Did the Universe and life appear by chance or is there evidence of a bigger scheme of thing behind them? In this context, I am concerned with answering these questions. This problem is addressed using knowledge in cosmology, physics and biology. The initial part describes the stages of the "Genesis" according to physical cosmology from the Big Bang to the appearance of life on Earth. It will touch on problems of why the universe is dominated by matter, the theory of inflation, the limits of our knowledge on the early Universe, the lack of a theory that can allow us to study the phases immediately after the Big Bang, the relation between the concepts of quantum mechanics and the existence of God. It shows how the Universe is finely regulated, that is, the physical constants have been chosen so that life appears in the Universe. The regulation is so strong that we are forced to think the existence of a great designer who has created a particular Universe like the one we are observing. This conclusion can be avoided only if there is an infinity of universes, a multiverse. We ask ourselves if science can create the Universe from nothing and using the same arguments of cosmologists such as Krauss (author of The Universe from Nothing). It is now known that the current science does not allow the creation of a Universe from absolutely nothing. Physics and cosmology do not deny God. Indeed, the argument of the fine adjustment of constants is strongly indicative of the existence of a great designer. Other evidence confirming this comes from biology. Thousands of experiments in recent decades highlight the impossibility of generating life in the laboratory. There is an intrinsic order in life encoded in DNA that is not present in experiments. Simple calculations show that the "blind and aimless" evolution described by neo-Darwinists such as Dawkins does not allow the generation of life.
€ 76,50 -
God Or Science?: Is Science Denying God?
Does science deny God? Did the Universe and life appear by chance or is there evidence of a bigger scheme of thing behind them? In this context, I am concerned with answering these questions. This problem is addressed using knowledge in cosmology, physics and biology. The initial part describes the stages of the "Genesis" according to physical cosmology from the Big Bang to the appearance of life on Earth. It will touch on problems of why the universe is dominated by matter, the theory of inflation, the limits of our knowledge on the early Universe, the lack of a theory that can allow us to study the phases immediately after the Big Bang, the relation between the concepts of quantum mechanics and the existence of God. It shows how the Universe is finely regulated, that is, the physical constants have been chosen so that life appears in the Universe. The regulation is so strong that we are forced to think the existence of a great designer who has created a particular Universe like the one we are observing. This conclusion can be avoided only if there is an infinity of universes, a multiverse. We ask ourselves if science can create the Universe from nothing and using the same arguments of cosmologists such as Krauss (author of The Universe from Nothing). It is now known that the current science does not allow the creation of a Universe from absolutely nothing. Physics and cosmology do not deny God. Indeed, the argument of the fine adjustment of constants is strongly indicative of the existence of a great designer. Other evidence confirming this comes from biology. Thousands of experiments in recent decades highlight the impossibility of generating life in the laboratory. There is an intrinsic order in life encoded in DNA that is not present in experiments. Simple calculations show that the "blind and aimless" evolution described by neo-Darwinists such as Dawkins does not allow the generation of life.
€ 34,50 -
Invisible Universe, The: Dark Matter, Dark Energy, And The Origin And End Of The Universe
This book describes some of the frontier problems of cosmology: our almost total ignorance of what the Universe is made up of, the mystery of its origin and its end. The book starts with a description of the historical events that led to the construction of the Big Bang model together with the stages that transformed the Universe from a very hot place to a very cold one, full with the structures that we observe today. These structures (stars, galaxies, etc.) constitute only 5% of the contents of the Universe. Concerning the remaining 95%, dubbed dark matter and dark energy, we know very little, and we have only indirect evidence of their existence. The text describes the story and the protagonists who showed the need for the existence of this "missing matter", the observations, and puzzles they had to solve to understand that dark matter was not ordinary matter. The book describes the hunt for dark matter, carried out with instruments operating in space, on the Earth's surface, and in laboratories built in the bowels of the Earth. It also describes dark energy, which manifests itself in the accelerated expansion of the Universe, and appeared only a few billions of years ago. The book discusses why dark energy must exist and what its existence implies, especially for the future and the end of our Universe.
€ 48,50 -
Invisible Universe, The: Dark Matter, Dark Energy, And The Origin And End Of The Universe
This book describes some of the frontier problems of cosmology: our almost total ignorance of what the Universe is made up of, the mystery of its origin and its end.
€ 96,95