ELASTIC spacetime and relativity '
PHILIPPE DAVERIO EPIPHANY HAS A COMPLETE LINE OF INTUITIVE AND STRING THEORY AS THE PRADO MUSEUM The implicit content SETS AND SYMBOLS OF THE FIRST EPISODE OF THE PAINTING OF HONEST Nastagio Botticelli, inspired by Boccaccio's STORY TO A THIRD CLASS SCHOOL OF MEDIA IN TEACHING TRIP TO MADRID.
Until the late nineteenth century reality ', as defined by science was close to the common concepts and intuitive. The space was the scenario in which there is the reality ', a container that had nothing to do with the "content". The weather was absolutely rigid, and the same throughout the universe, and seemed to coincide with the life lived by men. There was the matter, the substance of the eternal world. The force was to evolve the matter in space. And of course all of this clockwork mechanism existed in a single copy. Everything 'and' completely collapsed with Einstein. The passage of time and 'illusion, reality' is a four-dimensional spacetime in which nothing corresponds to the passage of time, matter and 'ephemeral, can' be created from energy and can 'dissolve into radiation impalpable.
Before relativity to explain in detail the 'General, I anticipate that perhaps propose' to my friend and painter A. Cimatti prototitolo to use in ex post this article as a source of inspiration for a painting, it must 'but' be well studied in the intentions and techniques. As for string theory, you first need to speak extensively of quantum physics. Avoid 'talking (not already' cause I believe that you will be aware, given the very low confidence that I have for you, but because 'otherwise making me go on too long) of the studies on falling bodies and gravity' of Galileo and Newton's law of elasticity 'of Hooke, the stress tensor, the tensor of deformation, (D = kT) and so on. Tell 'that Einstein was the only light that would take him eight years later, the relativity' General, one day while at work at the patent office in Bern, "A man in free fall did not warn 'more' weight ". Once you have learned some rudiments of elasticity 'of a continuous medium, according to classical mechanics, (if you know nada, go to study, pathetic, inept and useless beings, instead of filled up with diarrhea from morning to evening) describe relativity' general as elasticity 'of spacetime. We discuss two things: 1) what 's the same as D, ie' what 's the mathematical object that measures the deformation of a space-uniform than that of Minkowski and 2), what 's the same as T, ie' what 's the mathematical object to what extent the cause or source of the deformation of space, without which it would be a Minkowski spacetime. The answer to the second question is' was obtained by Einstein quickly enough with the following reasoning. First, it suggests to identify the object that measures the cronogeometria spacetime, that 'the metric tensor g, the gravitational field. This' follows from the equivalence principle, discovered by AE in 1907 (we fly over here. Paris as the crow flies, remember Hugo? Study merde!). The next step is to understand what is the source of g. From Newton we know that the mass measure which would also 'acted upon gravity' And what 'that creates a gravitational field. So the source of gravity 'is, according to Newton, the mass. But relativity 'restricted has completely changed and enriched the concept of mass, replacing it with the mass-energy. In virtue 'of the relationship E = mc (squared) (sorry, but I have to put the function exponents) the mass can' change in energy or vice versa. So we would expect that the source of gravity 'is the distribution in space of a certain quantity' mass-energy. But things are not so 'simple' cause an in-depth study shows that the density 'per unit' volume of mass-energy, not 'that one component of a mathematical object more' complex called energy-momentum tensor. This tensor 10 has ten components: a measure of the density 'volumetric mass-energy density of the three' pulse volume (or quantity 'of motion) and six stress tensor, equal to that for a continuous medium in three dimensions. We shall call this tensor T in ten dimensions which generalizes simultaneously the density 'of mass and the stress tensor. In 1911, Einstein accepted a professor position at the University 'of Prague German (no, Prague is not in Germany). We spent a year during which he attended the literary salon of Berta Fanta (drinking sprite) and Prague's famous authors and thinkers such as Max Brod and Franz Kafka.Ottiene also excellent results including a version more 'precise equivalence principle as well as' the 'hypothesis that the principle entails an observable deflection of light rays that pass near the Sun and a red shift, ie 'frequency to' low spectrum (no, it's not ghosts) issued by a massive body, (as is the sun). So, in essence, a) the gravitational field and 'equivalent to a deformation of the geometry of spacetime and must therefore be described by the ten components of the metric tensor g, b) the source of the field ge' the distribution of mass-energy, and impulse voltages, described by a ten components, the energy-momentum tensor T, and finally c) the fundamental equation of gravity 'relativistic must take the form of a law of elasticity' of space, ie D (g) = kT. Einstein turned to his friend M. Grossmann for help in finding a good mathematical definition of D (g). Unfortunately Grossmann were not familiar 'with the non-uniform geometry which Einstein needed, so the two had to make superhuman efforts to understand the physical implications of some mathematical tools derived from studies by Riemann, Christoffel, Ricci and Levi-Civita. They had come to the definition of many mathematical objects gauging the difference between a space and a warped disk space and uniform. Contrary to what one might think, not enough to tell the difference between each point in the deformed geometry of the metric tensor g and the value assumed by this simple tensor in a space-no deformato.Situiamoci in any spacetime, distorted by the presence of matter and provided with a metric tensor g, and dropped in a free-falling elevator. The initial idea was that the gravitational field was cleared. But the cancellation and 'complete? No. In fact, within a "lift" in free fall continues to be a part of the gravitational field, the part that the fall of the lift can not cancel because of the variations from one end of the field. The mathematical theory of a compound not completely erased by a gravitational field g in a reference system in free fall, brings up a mathematical object with twenty members, "the Riemann-Christoffel tensor. This tensor R, although perfectly defines the deformation of a curved spacetime, the mathematical object could not be tried by Einstein, as T, have had only ten members. Eventually after much hesitation, Einstein succeeded 'in 1915, to find the object he sought, capable of measuring deformation of space-time respecting the principle of relativity' and the general conservation of energy and momentum. (G) Einstein.Equazione tensor of gravity 'of Einstein D (g) = kT where the components of the left measure the deformation of cronogeometria of space while the right contains the source of these deformations. All that remains is simply to define the value of the coefficient k which measures the elasticity ' Jelly spacetime. Using the units' normal theoretical physicists, is the numerical value of elasticity 'of space and' approximately two times ten raised to less than forty-eight. This' shows that the elasticity 'of space and' very small or, conversely, that his rigidity 'and' extremely large. That explains how and for millenniums' could assume that space and time are rigid structures, unaffected by the matter and strains. We must concentrate density 'abnormal mass to deform significantly in the space-time fabric. We'll talk later of neutron stars and black-hole.Lo Euclidean space is defined by two properties ': a) and' a space three dimensions and b) the distance between two points' defined by a generalization of the Pythagorean theorem. All other structures of Euclidean space can be deduced from these properties' core. In relativity 'restricted property' "a" is changed by increasing the size of three and four points in this space (these events) are identified by four real coordinates, length, width, height and time. What 'the same (here, please do not confuse the term "similar" with the doctrine of Thomas Aquinas dell'analogicita' being, that will explain 'on another occasion) the concept of distance between two events? It 's the so-called space-time interval. E 'defined by a mathematical formula simple but important physical consequences: "The square of the interval between two events A and B 'equal to the sum of the squares of differences of length, width and height of A and B, minus the square of the difference in time between A and B, multiplied by the speed 'of light squared. " The concept of the interval between two events define what 'that you can' call cronogeometria or if you prefer, geocronometria spacetime. You can 'represent the cronogeometria drawing of space around each event P the set of events separated by an interval P whose square is 1. Since 'this amount' can be positive, negative, or zero, a complete representation of space involves the cronogeometria the track, around each event P, three sets of events, the set of events separated by an interval P-squared equal to +1, -1 and 0. We note that the location of events and anything remotely 'consists of two cones joined at the top, an upward of spacetime, that is what we call the convention to the future, the other directed downwards, ie' to the past. Given that represents the events that are related to P by a ray (the term refers to the light beam makes absolutely no sense, as we shall see, but now we go to the lines) of light, is called "light cone of P". The mass and 'a measure of the energy contained in a body, in particular, the light carries mass. Translated formula, E = mc (squared). This formula has changed permanently the idea of \u200b\u200bmatter. From E = mc (squared) or in inverse form, m = E / c (squared) mass, then the material loses its perennial nature. If a body takes energy, such as it warms up, its mass increases. If the lost, eg in the form of electromagnetic radiation, its mass decreases.
sera
RAINY NIGHT IN A GREY TIRED, SO
'goes the world.
dead trees DOT INK OF THE BLUE ELECTRIC
cumulonimbus cloud. Who knows if
NATURE HAS FOR ME
SOUL CRYSTAL.
TALKING ABOUT MY WORDS ARE ON THE WATER IN THE AIR
like cork.
FOR YOUR EYES ONLY
suffer these EVIL.
SADNESS OF THE PAST AND OTHERS THAT WILL BE.
RAINY NIGHT IN A GREY TIRED, SO
'goes the world.
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