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Coincidentia Oppositorum


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Lisa Randall is an American theoretical physicist and leading expert on particle physics and cosmology. She is the Frank B. Baird, Jr. Professor of Science on the physics faculty of Harvard University. Her research includes elementary particles and fundamental forces and she has developed and studied a wide variety of models, the most recent involving extra dimensions of space. She has advanced the understanding and testing of the Standard Model, supersymmetry, possible solutions to the hierarchy problem concerning the relative weakness of gravity, cosmology of extra dimensions, baryogenesis, cosmological inflation, and dark matter. Her best-known contribution is the Randall–Sundrum model, first published in 1999 with Raman Sundrum.

 

Lisa Randall, predavanje u Aspenu:

 

 

Randall–Sundrum model:

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In physics, three dimensions of space and one of time is the accepted norm. However, there are theories that attempt to unify the four fundamental forces by introducing more dimensions. Most notably, superstring theory requires 10 spacetime dimensions, and originates from a more fundamental 11-dimensional theory tentatively called M-theory which subsumes five previously distinct superstring theories. To date, no experimental or observational evidence is available to confirm the existence of these extra dimensions. If extra dimensions exist, they must be hidden from us by some physical mechanism. One well-studied possibility is that the extra dimensions may be "curled up" at such tiny scales as to be effectively invisible to current experiments. Limits on the size and other properties of extra dimensions are set by particle experiments such as those at the Large Hadron Collider.

 

At the level of quantum field theory, Kaluza–Klein theory unifies gravity with gauge interactions, based on the realization that gravity propagating in small, compact extra dimensions is equivalent to gauge interactions at long distances. In particular when the geometry of the extra dimensions is trivial, it reproduces electromagnetism. However at sufficiently high energies or short distances, this setup still suffers from the same pathologies that famously obstruct direct attempts to describe quantum gravity. Therefore, these models still require a UV completion, of the kind that string theory is intended to provide. Thus Kaluza-Klein theory may be considered either as an incomplete description on its own, or as a subset of string theory model building.

In addition to small and curled up extra dimensions, there may be extra dimensions that instead aren't apparent because the matter associated with our visible universe is localized on a (3 + 1)-dimensional subspace. Thus the extra dimensions need not be small and compact but may be large extra dimensions. D-branes are dynamical extended objects of various dimensionalities predicted by string theory that could play this role. They have the property that open string excitations, which are associated with gauge interactions, are confined to the brane by their endpoints, whereas the closed strings that mediate the gravitational interaction are free to propagate into the whole spacetime, or "the bulk". This could be related to why gravity is exponentially weaker than the other forces, as it effectively dilutes itself as it propagates into a higher-dimensional volume.

 

 

 

The Allegory of the Cave (also called the analogy of the cave, myth of the cave, metaphor of the cave, parable of the cave, and Plato's Cave) is presented by the Greek philosopher Plato in his work the Republic (514a–520a) to compare "the effect of education (παιδεία) and the lack of it on our nature".

Plato has Socrates describe a gathering of people who have lived chained to the wall of a cave all of their lives, facing a blank wall. The people watch shadows projected on the wall from things passing in front of a fire behind them, and they begin to give names to these shadows. The shadows are as close as the prisoners get to viewing reality. He then explains how the philosopher is like a prisoner who is freed from the cave and comes to understand that the shadows on the wall do not make up reality at all, for he can perceive the true form of reality rather than the mere shadows seen by the prisoners.

Socrates remarks that this allegory can be taken with what was said before, namely the analogy of the sun and the analogy of the divided line. In particular, he likens our perception of the world around us "to the habitation in prison, the firelight there to the sunlight here, the ascent and the view of the upper world [to] the rising of the soul into the world of the mind".

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Edited by slow
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Hvala IndridCold

 

Totalno sam zaboravio tu scenu iz filma Sabirni centar.

 

Usled silnog uzbuđenja profesoru Pavloviću pozli, dok pokušava, zajedno sa svojim asistentom, učiteljem Petrom (Bogdan Diklić), da pomeri ploču – "tajnu cele civilizacije", prolaz za drugi svet, na kojoj je natpis coincidentia oppositorum (jedinstvo suprotnosti).

 

Edited by slow
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Ohr ("Light" Hebrew: אור‎; plural: Ohros/Ohrot "Lights" Hebrew: אורות‎) is a central Kabbalistic term in the Jewish mystical tradition. The analogy of physical light is used as a way of describing metaphysical Divine emanations. Shefa ("Flow"Hebrew: שפע‎ and its derivative, Hashpoah "Influence" Hebrew: השפעה‎) is sometimes alternatively used in Kabbalah, a term also used in Medieval Jewish Philosophy to mean Divine influence, while the Kabbalists favour Ohr because itsnumerical value equals Raz ("mystery").It is one of the two main metaphors in Kabbalah for understanding Divinity, along with the other metaphor of the human soul-body relationship for the Sephirot. The metaphorical description of spiritual Divine creative-flow, using the term for physical "light" perceived with the eye, arises from analogous similarities. These include the intangible physicality of light, the delight it inspires and the illumination it gives, its apparently immediate transmission and constant connection with its source. Light can be veiled ("Tzimtzum"-constrictions in Kabbalah) and reflected ("an ascending light from the Creations" in Kabbalah). White light divides into 7 colours, yet this plurality unites from one source. Divine light divides into the 7 emotional Sephirot, but there is no plurality in the Divine essence. The termOhr in Kabbalah is contrasted with Ma'ohr, the "luminary", and Kli, the spiritual "vessel" for the light.

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Konzervativna jevrejska religiozna grupa Chabad Lubavitch ima vrlo razvijen društveni aktivizam i dosta napora ulaže u popularizaciji Kabale i učenja svog učitelja Lurije.

Centralni pojam Lurijanske Kabale je beskonačna sveprožimajuća nevidljiva svetlost. Kao što se vidi opet se dolazi do pojma beskonačnosti, u jednoj drugoj tradiciji i jednom drugom religiozno-filozofskom sistemu.

 

Rabin Infinity  :nobles:  u promotivnom crtaću objašnjava Slagalicu Sveta i Beskonačnu Svetlost

 

http://www.chabad.org/675598

Edited by slow
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Rabbi Yose taught: “God has a tree of flowering souls in Paradise.
This tree is surrounded by the four winds of the world. From the
branches of this tree sprout forth all souls, for they grow upon
this tree, as is written: ‘I am a  cypress tree in bloom; your fruit
issues forth from Me.’ (Hos.14:9). And from the roots of this tree
sprout the souls of all the righteous ones whose names are
inscribed there.  From this we learn that all souls are the fruit of
the Holy One, blessed be He.”
                                                       Ha-Nefesh ha-Hakhamah
                                                       Moses ben Shem Tov de Leon

 

 

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