Principle of General Equivalence - Revision history

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‎Common definition

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‎Definition

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‎Definition

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Paolo at 18:45, 16 February 2020

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 == Common definition  ==
-Ci sono due versioni del principio di equivalenza, entrambe dovute ad Albert Einstein:
+There are two versions of the equivalence principle, both due to Albert Einstein:
-* la versione forte afferma che in un campo gravitazionale qualsiasi, è sempre possibile scegliere un sistema di riferimento rispetto al quale è sempre possibile scegliere un intorno di un punto in cui gli effetti dell'accelerazione dovuti al campo gravitazionale sono nulli;
+* the strong version states that in any gravitational field, it is always possible to choose a reference system with respect to which it is always possible to choose a neighborhood of a point where the effects of acceleration due to the gravitational field are zero;
-* quella debole asserisce che la massa inerziale, cioè la proprietà intrinseca del corpo materiale di opporsi alle variazioni di moto, e la massa gravitazionale, che rappresenta la proprietà di un corpo di essere sorgente e di subire l'influsso di un campo gravitazionale, sono numericamente uguali (il rapporto tra le due masse è stato sperimentalmente misurato da Eötvös, nell'esperimento che porta il suo nome, essere diverso dall'unità per meno di un fattore di :<math>10^{-14}</math>). {{WpLink}}
+* the weak one asserts that the inertial mass, that is the intrinsic property of the material body to oppose the variations of motion, and the gravitational mass, which represents the property of a body to be the source and to undergo the influence of a gravitational field, are numerically equal. {{WpLink}}
 == Description ==

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 This principle incorporates and extends the principle of equivalence proposed by Einstein. In General Relativity, the equivalence principle states the equivalence of the gravitational and inertial mass. The gravitational "force" that is experienced locally on a massive body as the Earth is the same as the pseudo-force experienced by an observer in a non-inertial (accelerated) frame of reference:
-(Inertial mass) {\displaystyle \cdot }\cdot  (Acceleration) {\displaystyle =} =  (Intensity of the gravitational field) {\displaystyle \cdot }\cdot  (Gravitational mass).
+(Inertial mass) * (Acceleration) =  (Intensity of the gravitational field) * (Gravitational mass).
 == Common definition  ==

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 These aspects are equivalent and have a unique physical, natural, basis. In this perspective, we can say that mass does not curve space-time. Mass “is” (can be seen, or described, is the same thing of) the curvature of space-time. And not only, as above mentioned. We call this the [[Principle of General Equivalence]], a specification of the Principle of Equivalence.
-This principle incorporates and extends the principle of equivalence proposed by Einstein. In General Relativity, the equivalence principle states the equivalence of the gravitational and inertial mass. The gravitational "force" that is experienced locally on a massive body as the Earth is the same as the pseudo-force experienced by an observer in a non-inertial (accelerated) frame of reference.
+This principle incorporates and extends the principle of equivalence proposed by Einstein. In General Relativity, the equivalence principle states the equivalence of the gravitational and inertial mass. The gravitational "force" that is experienced locally on a massive body as the Earth is the same as the pseudo-force experienced by an observer in a non-inertial (accelerated) frame of reference:
 == Common definition  ==

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 These aspects are equivalent and have a unique physical, natural, basis. In this perspective, we can say that mass does not curve space-time. Mass “is” (can be seen, or described, is the same thing of) the curvature of space-time. And not only, as above mentioned. We call this the [[Principle of General Equivalence]], a specification of the Principle of Equivalence.
-This principle incorporates an extends the principle of equivalence proposed by Einstein. In General Relativity, the equivalence principle states the equivalence of the gravitational and inertial mass. The gravitational "force" that is experienced locally on a massive body as the Earth is the same as the pseudo-force experienced by an observer in a non-inertial (accelerated) frame of reference.
+This principle incorporates and extends the principle of equivalence proposed by Einstein. In General Relativity, the equivalence principle states the equivalence of the gravitational and inertial mass. The gravitational "force" that is experienced locally on a massive body as the Earth is the same as the pseudo-force experienced by an observer in a non-inertial (accelerated) frame of reference.
 == Common definition  ==

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 == Description ==
-== See also ==
+*[[Principle of Equivalence]]
 *[[TFNR - 7.3.5 The principle of General Equivalence]]
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← Older revision		Revision as of 18:53, 29 February 2020
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	These aspects are equivalent and have a unique physical, natural, basis. In this perspective, we can say that mass does not curve space-time. Mass “is” (can be seen, or described, is the same thing of) the curvature of space-time. And not only, as above mentioned. We call this the [[Principle of General Equivalence]], a specification of the Principle of Equivalence.		These aspects are equivalent and have a unique physical, natural, basis. In this perspective, we can say that mass does not curve space-time. Mass “is” (can be seen, or described, is the same thing of) the curvature of space-time. And not only, as above mentioned. We call this the [[Principle of General Equivalence]], a specification of the Principle of Equivalence.

−	~~Vedi def italiana wiki…~~
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−	~~(Action, propagation \| metric \| space and time\|, c \| epsilon zero e mu zero\|, mass \| ordinary / dark matter and dark energy\|, temperature \| level and distribution of Elementary Field fluctuations \|)~~
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−	Il Principio di Equivalenza descrive l'equivalenza tra le grandezze fisiche fondamentali (velocità di propagazione delle perturbazioni nel Campo dell'Azione elementare, massa puntuale e di dominio spaziale, temperatura del Campo, densità delle perturbazioni elementari, metrica dello spazio-tempo) e, indirettamente, tra le grandezze fisiche derivate (velocità di propagazione della luce nel vuoto, massa delle strutture della materia oscura e ordinaria, dimensioni e proprietà geometriche della realtà fisica).
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−	Le grandezze fisiche fondamentali che caratterizzano l’[[Azione Elementare]] sono equivalenti. Esse riflettono una soggiacente equivalenza tra i fenomeni fisici che tentiamo di descrivere. La densità di [[massa]], l’[[energia oscura]], la curvatura della metrica dello [[spazio-tempo\|campo elementare]], la temperatura dello spazio-tempo, la velocità di propagazione dell’informazione nel campo e la densità delle perturbazioni elementari (la distribuzione delle fluttuazioni quantistiche) sono equivalenti e hanno un’unica base fisica. La massa non curva lo spazio-tempo. La massa “è” la curvatura dello spazio-tempo.
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−	~~---~~
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−	~~The principle of General Equivalence - Table~~
−	~~Vedi def italiana wiki…~~
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−	~~(Action, propagation \| metric \| space and time\|, c \| epsilon zero e mu zero\|, mass \| ordinary / dark matter and dark energy\|, temperature \| level and distribution of Elementary Field fluctuations \|)~~

	In the theory of general relativity, the equivalence principle is the equivalence of gravitational and inertial mass, and Albert Einstein's observation that the gravitational "force" as experienced locally while standing on a massive body (such as the Earth) is the same as the pseudo-force experienced by an observer in a non-inertial (accelerated) frame of reference.		In the theory of general relativity, the equivalence principle is the equivalence of gravitational and inertial mass, and Albert Einstein's observation that the gravitational "force" as experienced locally while standing on a massive body (such as the Earth) is the same as the pseudo-force experienced by an observer in a non-inertial (accelerated) frame of reference.

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 *the '''amount of [[Perturbation]]''', the density of the elementary perturbations (inhomogeneities/gradients in the distributions of the quantum fluctuations of the Elementary Field that we call Elementary Events) that characterize the Elementary Action,
-*'''[[Mass and gravitational phenomena|mass]] density'''of space-time domains, that characterize many physical entities / quantities that we observe or suppose as basic constituents of the physical world: [[dark matter]], [[dark energy]], [[ordinary matter]],
+*'''[[Mass and gravitational phenomena|mass]] density''' of space-time domains, that characterize many physical entities / quantities that we observe or suppose as basic constituents of the physical world: [[dark matter]], [[dark energy]], [[ordinary matter]],
 *[[space]]-[[time]] '''curvature of the metrics''', that determine the dimensions and the geometric properties of physical reality,
 *'''temperature of the [[Elementary Field]]''' or the temperature of space-time (see the phenomena called CMB - Cosmic Microwave Background),
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 In the theory of general relativity, the equivalence principle is the equivalence of gravitational and inertial mass, and Albert Einstein's observation that the gravitational "force" as experienced locally while standing on a massive body (such as the Earth) is the same as the pseudo-force experienced by an observer in a non-inertial (accelerated) frame of reference.
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 == Common definition  ==

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 == Definition ==
 {{Def-en|1={{PAGENAME}}}}
-d_g_eq_principle	Principio di Equivalenza Generale	Le grandezze fisiche fondamentali che caratterizzano l’[[Azione Elementare]] sono equivalenti. Esse riflettono una soggiacente equivalenza tra i fenomeni fisici che tentiamo di descrivere. La densità di [[massa]], l’[[energia oscura]], la curvatura della metrica dello [[spazio-tempo|campo elementare]], la temperatura dello spazio-tempo, la velocità di propagazione dell’informazione nel campo e la densità delle perturbazioni elementari (la distribuzione delle fluttuazioni quantistiche) sono equivalenti e hanno un’unica base fisica. La massa non curva lo spazio-tempo. La massa “è” la curvatura dello spazio-tempo.
+[[File:The_principle_of_General_Equivalence.png|200px|thumb|right|The principle of General Equivalence]]
-For example, in the physical domain of Reality, some of fundamental physical quantities that characterize the manifestation of the Elementary Action, in the basic mode that we call [[Perturbation]], in various more complex level of Reality, as the level of Action, of Information, of the Structures of Information, of the Material Forms can be considered as equivalent, manifestations of the same phenomena and dynamics occurring at the more elementary level of Reality. We are talking about mass density, dark energy, space-time curvature of the metrics, temperature of the space time (CMB), velocity of propagation of information/causality in the field and density of the elementary perturbations (the distribution of quantum fluctuations of the Elementary Field) ) that characterize the Elementary Action can be considered as equivalent. They reflect an underlying equivalence among physical phenomena we are trying to describe. Mass density, dark energy, space-time curvature of the metrics, temperature of the space time, velocity of propagation of information in the field and density of the elementary perturbations (the distribution of quantum fluctuations) are equivalent and have a unique physical, natural, basis. For example: in this perspective, we can say that mass does not curve space-time. Mass “is” (can be seen, or described, is the same thing of) the curvature of space-time. But not only, as above mentioned. We call this the [[Principle of General Equivalence]], a specification of the Principle of Equivalence.
+In the [[Physical Reality|physical domain of Reality]], the Principle of General Equivalence describes the equivalence between some of the [[Fundamental Physical Quantities|fundamental physical quantities]], which characterize the manifestation of the [[Elementary Action]] in its basic mode that we call [[Perturbation]], and, indirectly and consequently, among some related derived physical quantities, which can be considered the expression of those fundamental physical quantities at more complex levels of Reality (as the level of [[Information]], of the [[Structures of Information]], of [[Material Forms]]).
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+The most extended principle of equivalence operates in the physical world, in the real factory of [[space]]-[[time]]. At this level, the most elementary level of Reality, where the occurrence of the [[Elementary Events]] represent the most elementary form of [[Existence]], we can find this fundamental equivalence that give us an explanation of the deep nature and connection of some basic phenomena and some basic quantity/[[Fundamental Constants of Nature|constant of Nature]].
-Therefore, Equivalence Principle describes the equivalence between the fundamental physical quantities:
-velocity of propagation of perturbations (of Information) in the Field of Elementary Action (description),
+*the '''amount of [[Perturbation]]''', the density of the elementary perturbations (inhomogeneities/gradients in the distributions of the quantum fluctuations of the Elementary Field that we call Elementary Events) that characterize the Elementary Action,
-mass of space-time domains,
+*'''[[Mass and gravitational phenomena|mass]] density'''of space-time domains, that characterize many physical entities / quantities that we observe or suppose as basic constituents of the physical world: [[dark matter]], [[dark energy]], [[ordinary matter]],
-temperature range,
+*[[space]]-[[time]] '''curvature of the metrics''', that determine the dimensions and the geometric properties of physical reality,
-the density of elementary perturbations of space-time metric
+*'''temperature of the [[Elementary Field]]''' or the temperature of space-time (see the phenomena called CMB - Cosmic Microwave Background),
-and, indirectly, between the derived quantities:
+*velocity of propagation of [[information]]/[[causality]] in the Elementary Field or '''speed of light''' in the void/vacuum.
 The principle of General Equivalence - Table