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The Astronomers
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Basics of Quantum Gravity
 
16:35

Basics of Quantum Gravity

This is an overview of the latest idea in theoretical physics of quantum gravity. In terms of how it relates to the forces and more.

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Added: November 27, 2012, 7:11 pm
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Will Quantum Gravity Theory Connect the Dots Between the After and the Before of the Big Bang
 
05:27

Will Quantum Gravity Theory Connect the Dots Between the After and the Before of the Big Bang

It appears that the perception of those who tries to figure out the Universe so far tends to stumble over the understanding of gravity. The force is so weak, that a small magnet can pull or push something away from the entire earth, yet it governs the Universe. Then, there is a "particle" that spreads its presence over those dimensions - the graviton. If this proposition is true, the event of Big Bang and the current state of the Universe become more transparent and easier to comprehend.The famous quantum gravity theory describes matter as vibrating strings of energy, and it is designed around the concept of ten dimensions plus time, and not the three dimensions we deal with in our daily life. We experience only tiny fraction gravity's true strength because its power is spread so thin between all these ten dimensions.

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Added: November 27, 2012, 7:11 pm
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The End of Space and Time? - Professor Robbert Dijkgraaf
 
51:52

The End of Space and Time? - Professor Robbert Dijkgraaf

Robbert Dijkgraaf's focus is on string theory, quantum gravity, and the interface between mathematics and particle physics, bringing them together in an accessible way, looking at sciences, the arts and other matters. The transcript and downloadable versions of the lecture are available from the Gresham College website: http://www.gresham.ac.uk/lectures-and-events/the-end-of-space-and-time Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website. http://www.gresham.ac.uk

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Added: November 27, 2012, 7:11 pm
Views: 461 | Comments: 0 | Rating: Not yet rated

Do we need String Theory for Quantum Gravity? - Lance Dixon (SETI Talks)
 
01:09:41

Do we need String Theory for Quantum Gravity? - Lance Dixon (SETI Talks)

SETI Talks Archive: http:seti.org/talks The strong, weak, and electromagnetic interactions all have consistent, relativistic and quantum mechanical descriptions in terms of pointlike particles, but Einstein's theory of gravitation has long resisted a similar treatment, because of severe ultraviolet divergences. String theory solves these problems, but it introduces a new length scale, perhaps 16 orders of magnitude below what can be tested experimentally. Dr. Dixon will describe recent theoretical progress in showing that a particular pointlike theory of gravity, called N=8 supergravity, might also be quantum mechanically consistent. In particular, N=8 supergravity has been shown explicitly to have no ultraviolet divergences in perturbation theory through the four-loop order. Dr. Dixon will also discuss the possible implications of these results.

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Added: November 27, 2012, 7:11 pm
Views: 420 | Comments: 0 | Rating: Not yet rated

Derivation Of The Einstein Field Equations (ℍilbert, 1915)
 
01:31

Derivation Of The Einstein Field Equations (ℍilbert, 1915)

Find the original derivation of Gʲᵏ=0 in: "Die Grundlagen der Physik. (Erste Mitteilung)" in Nachrichten von der Königlichen Gesellschaft der Wissenschaften zu Göttingen. Math.-phys. Klasse. 1916. Issue 8, p. 395-407. Presented 20 November 1915. TYPO: Replace ∂/∂e with ∂/∂ξᵉ wherever it appears. NOTATION: Dᵥ ≡ ∂/∂ξᵛ. --------------------------------------------------------------------------------­------------------------- REMARKS: 1. In the derivation use has been made of locally geodesic coordinates. For example, gᵘᵛδRᵤᵥ=(√(-g))⁻¹Dₑ((√(-g))(gᵘᵛ δΓᵉᵤᵥ - gᵉᵛ δΓᵘᵤᵥ))=(√(-g))⁻¹(gᵘᵛ δΓᵉᵤᵥ - gᵉᵛ δΓᵘᵤᵥ)Dₑ((√(-g)) + Dₑ(gᵘᵛ δΓᵉᵤᵥ - gᵉᵛ δΓᵘᵤᵥ)=(√(-g))⁻¹(gᵘᵛ δΓᵉᵤᵥ - gᵉᵛ δΓᵘᵤᵥ)(½)((√(-g))⁻¹ggᵘᵛDₑgᵤᵥ + Dₑ(gᵘᵛ δΓᵉᵤᵥ - gᵉᵛ δΓᵘᵤᵥ)=Dₑ(gᵘᵛ δΓᵉᵤᵥ - gᵉᵛ δΓᵘᵤᵥ). Since, Dₑgᵤᵥ=0. Therefore, since Aᵉ≡gᵘᵛ δΓᵉᵤᵥ - gᵉᵛ δΓᵘᵤᵥ is a tensor, gᵘᵛδRᵤᵥ=∇ₑAᵉ in arbitrary coordinates. Where ∇ is the covariant derivative, and where Dₑ≡∂/∂ξᵉ. The ∂/∂ξᵉ are just ordinary partial derivatives wrt the spacetime variables. For example, ∂/∂ξᵉ((ξᵘ)²)=2ξᵘδᵉᵤ, where δ is the Kronecker delta. 2. √(-g) dξ is the volume element in E₄, and √(-g)=1 when g=det[diag(1,-1,-1,-1)]= -1 (special relativity). 3. We can take the accelerating cosmos into account, in the vacuum case given in the clip, by replacing the action "R√(-g)" with "(R-2∧)√(-g)", where ∧ is the `cosmological constant` (which is sometimes taken to be a scalar field). 4. The presence of matter/energy produces curvature in spacetime. The Einstein tensor (G) is defined by Gʲᵏ ≐ Rʲᵏ - ½gʲᵏR. The notation, Ricʲᵏ≡Rʲᵏ (`Ric` for Ricci) often appears. Einstein assumed (which is NOT mathematically derivable) that, Gʲᵏ=(constant)Tʲᵏ. Where T (the energy-momentum/stress-energy tensor) is due to the presence of matter/energy. In its most general form J= ∫ₓ [R-2∧+ℒ]√(-g) dξ, where ℒ is the matter/energy Lagrange density s.t., δ ∫ₓ ℒ√(-g) dξ=∫ₓ δ(ℒ√(-g)) dξ=∫ₓ [(constant)Tᵘᵛ]δgᵤᵥ√(-g) dξ ⇒ δ(ℒ√(-g))/δgᵤᵥ=√(-g)(constant)Tᵘᵛ (by the variational lemma). The result, Gʲᵏ + ∧gʲᵏ = (constant)Tʲᵏ, are the full-blown field equations. 5. There are many types of energy-momentum tensors. I mention two: i. Tʲᵏ=μuʲuᵏ. A dust cloud (diffuse, non-interacting matter in vacuum): This has density (mass per volume) μ, and in an element of volume dV an observer moving with 4-velocity u=γ(c,v) (SI units) measures mass/energy μdV. ii. Tʲᵏ=(constant)[ℱʲᵤℱᵏᵘ - ¼gʲᵏℱᵘᵛℱᵤᵥ], where ℱ is the EM field tensor. This energy-momentum tensor represents the free photon field in vacuum. 6. One of the many interesting exact solutions of the Einstein field equations are the Weyl (Hermann Weyl (1885 -- 1955)) metrics, ds²=e²ᵘdt²-e²⁽ᵛ⁻ᵘ⁾(dρ²+dz²)-ρ²e⁻²ᵘdφ² --(*). Where c=1 (geometric units) and (ρ,φ,z) are cylindrical coordinates, as viewed in 3d Euclidean space. When viewed in 4d spacetime they`re known as Weyl`s canonical coordinates. And u,v are functions of ρ,z. In cartesian coordinates (x=ρcosφ, y=ρsinφ) (*) takes the form, ds²=e²ᵘdt²-ρ⁻²e²⁽ᵘ⁻ᵛ⁾(xdx+ydy)²-ρ⁻²e⁻²ᵛ(xdy-ydx)²-e²⁽ᵘ⁻ᵛ⁾dz². 7. An `exact` solution is NOT necessarily physical ♦ ---------------------------------------------------------------------------------------------------------

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Added: November 27, 2012, 7:10 pm
Views: 1607 | Comments: 0 | Rating: Not yet rated

Teach Astronomy - Space Curvature
 
01:22

Teach Astronomy - Space Curvature

http://www.teachastronomy.com/ General relativity relates the dynamics of the expanding universe to the curvature of space. Thus space curvature is one of the most important things to measure about our universe, but it's an extremely difficult measurement because the curvature is so subtle. In principle it would be possible to measure space curvature if there were objects of a fixed linear size in space. We could then measure how their apparent size varied with distance or redshift. But galaxies do not have fixed sides or edges, and their size actually evolves with cosmic time. So the size of galaxies cannot be used for this test. It also might be possible to measure the number of objects in equal volumes with distance or redshift to see what the space curvature was. In flat space, the number of objects per unit volume goes as the cube of the distance. In positively curved space, since the volume of the universe is smaller, the number of objects goes as a lower power than the third of radius, and in negatively curved universes where the volume is larger, it goes as a higher than the third power of distance. But this is a difficult measurement too because the objects we are counting, galaxies, both merge and change their properties with cosmic time.

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Added: November 27, 2012, 7:09 pm
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The Enigma of Time.
 
01:43

The Enigma of Time.

Time flows like a river but what is flowing? In a new theory it is the forward momentum of light that forms the forward flow of time. Because the Universe is never at absolute zero everything is radiating light waves of EMR continuously. If our eyes were more sensitive to the light we would be able to see this universal process. This process is totally universal and interactive; from the largest object to the smallest creature will slow the rate that time flows forming a curvature of spacetime relative to its own energy forming the future of its own evolutionary path. We have a universal process of spherical 4π symmetry forming and breaking that forms the spiral of life as time unfolds photon by photon or moment by moment.

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Added: November 27, 2012, 7:09 pm
Views: 514 | Comments: 0 | Rating: Not yet rated

Curved Space and Time (Part 4)
 
11:17

Curved Space and Time (Part 4)

A description of how matter (or mass-energy) acts as the source of curvature, which propagates through space, thus creating gravitational effects.

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Added: November 27, 2012, 7:09 pm
Views: 556 | Comments: 0 | Rating: Not yet rated

Einstein's General Theory of Relativity | Lecture 7
 
01:56:44

Einstein's General Theory of Relativity | Lecture 7

Lecture 7 of Leonard Susskind's Modern Physics concentrating on General Relativity. Recorded November 3, 2008 at Stanford University. This Stanford Continuing Studies course is the fourth of a six-quarter sequence of classes exploring the essential theoretical foundations of modern physics. The topics covered in this course focus on classical mechanics. Leonard Susskind is the Felix Bloch Professor of Physics at Stanford University. Stanford Continuing Studies: http://continuingstudies.stanford.edu/ About Leonard Susskind: http://www.stanford.edu/dept/physics/people/faculty/susskind_leonard.html Stanford University Channel on YouTube: http://www.youtube.com/stanford

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Added: November 27, 2012, 7:08 pm
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Einstein's General Theory of Relativity | Lecture 6
 
01:52:51

Einstein's General Theory of Relativity | Lecture 6

Lecture 6 of Leonard Susskind's Modern Physics concentrating on General Relativity. Recorded October 27, 2008 at Stanford University. This Stanford Continuing Studies course is the fourth of a six-quarter sequence of classes exploring the essential theoretical foundations of modern physics. The topics covered in this course focus on classical mechanics. Leonard Susskind is the Felix Bloch Professor of Physics at Stanford University. Stanford Continuing Studies: http://continuingstudies.stanford.edu/ About Leonard Susskind: http://www.stanford.edu/dept/physics/people/faculty/susskind_leonard.html Stanford University Channel on YouTube: http://www.youtube.com/stanford

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Added: November 27, 2012, 7:08 pm
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General Relativity: 3 - Curved Geometries
 
12:26

General Relativity: 3 - Curved Geometries

A brief introduction to curved geometries which will be useful in understanding general relativity. Part of a video series on general relativity.

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Added: November 27, 2012, 7:08 pm
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How Al Zeeper unified Gravity with Electromagnetism and Quantum Mechanics
 
03:21

How Al Zeeper unified Gravity with Electromagnetism and Quantum Mechanics

For this GRAND UNIFICATION please visit: http://www.einsteingravity.com/ I would like to dedicate this video to both scientists Marc Seifer, Ph.D. for his work and reserch on Nikola Tesla and to Alan Zeeper, Zee for his unification of Gravity with Electromagnetism that led my work on E=mQ² to become the mother of all physics equations. Al Zeeper has proven the plausability of E=mQ² via a simple and logical mathematics and geometry. Thanks to Zeeper, the physics became geometry a system of thoughts, what Albert Einstein was only dreaming of when trying ot unify his GRT with Quantum Mechanics. The video delivers a proof why Einstein had failed in his 30 year old quest for such a unificaion that would give an answer to any experiment and turn upside down all the science that is based on a false believe that gravity is a pulling force according to Newton and a curvature of space-time. Well neither a curvature of space not time exist, because time is only a numerical order of material change, related to Gravity and invented by humans possesing only a mathematical character. Quote: Srečko Šorli. This video proves that on the Planck scale there is no time and all phenomena are immediate, proving what Šorli postulated that the universe is timeless. Enjoy and share this presentation with your friends. You ill be amazed by Zeeper algorithms and the simplicity of his mathematics and geometry. Live long and prosper dear Al. "per aspera ad astra, semper exploro et scientia est potentia"

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Added: November 27, 2012, 7:08 pm
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General Relativity
 
05:04

General Relativity

See more clips at http://worldsciencefestival.com/wsftv Physicist Brian Greene explains how Albert Einstein, wrestling with how exactly gravity works, originally formulated the general theory of relativity. The landmark breakthrough provided the first unified description of gravity as a geometric property of space and time. It also laid the foundation for understanding more bizarre properties of the universe—like the curvature of spacetime, string theory, and the possibility of multiple, hidden dimensions of the universe.

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Added: November 27, 2012, 7:08 pm
Views: 479 | Comments: 0 | Rating: Not yet rated

Albert Einstein - Theory of Relativity - FULL Audio Book - Quantum Mechanics - Astrophysics -
 
03:40:16

Albert Einstein - Theory of Relativity - FULL Audio Book - Quantum Mechanics - Astrophysics -

Albert Einstein - Theory of General Relativity - FULL Audio Book - General relativity, or the general theory of relativity, is the geometric theory of gravitation published by Albert Einstein in 1916 and the current description of gravitation in modern physics. General relativity generalises special relativity and Newton's law of universal gravitation, providing a unified description of gravity as a geometric property of space and time, or spacetime. In particular, the curvature of spacetime is directly related to the energy and momentum of whatever matter and radiation are present. The relation is specified by the Einstein field equations, a system of partial differential equations. The predictions of general relativity have been confirmed in all observations and experiments to date. Although general relativity is not the only relativistic theory of gravity, it is the simplest theory that is consistent with experimental data. However, unanswered questions remain, the most fundamental being how general relativity can be reconciled with the laws of quantum physics to produce a complete and self-consistent theory of quantum gravity. Einstein's theory has important astrophysical implications. For example, it implies the existence of black holes—regions of space in which space and time are distorted in such a way that nothing, not even light, can escape—as an end-state for massive stars. - SUBSCRIBE to Greatest Audio Books: http://www.youtube.com/GreatestAudioBooks - READ along by clicking (CC) for Transcript Captions! - LISTEN to this entire book for free! Chapter listing and chapter length: 01 -- Sections 01-03 -- Relativity Pt. 1 -- 00:14:55 Part I: The Special Theory of Relativity 01 Physical Meaning of Geometrical Propositions 02 The System of Co-ordinates 03 Space and Time in Classical Mechanics Read by: Kelly Bescherer 02 -- Sections 04-06 -- Relativity Pt. 1 -- 00:10:38 04 The Galileian System of Co-ordinates 05 The Principle of Relativity (In the Restricted Sense) 06 The Theorem of the Addition of Velocities Employed in Classical Mechanics Read by: Linda Leu 03 -- Sections 07-09 -- Relativity Pt. 1 -- 00:20:33 07 The Apparent Incompatibility of the Law of Propagation of Light with the Principle of Relativity 08 On the Idea of Time in Physics 09 The Relativity of Simultaneity Read by: Peter Eastman 04 -- Sections 10-12 -- Relativity Pt. 1 -- 00:17:10 10 On the Relativity of the Conception of Distance 11 The Lorentz Transformation 12 The Behaviour of Measuring-Rods and Clocks in Motion Read by: David Barnes 05 -- Sections 13-15 -- Relativity Pt. 1 -- 00:19:11 13 Theorem of the Addition of Velocities. The Experiment of Fizeau 14 The Heuristic Value of the Theory of Relativity 15 General Results of the Theory Read by: Linda Leu 06 -- Sections 16-17 -- Relativity Pt. 1 -- 00:14:22 16 Experience and the Special Theory of Relativity 17 Minkowski's Four-Dimensional Space Read by: Kelly Bescherer 07 -- Sections 18-20 -- Relativity Pt. 2 -- 00:19:38 Part II: The General Theory of Relativity 18 Special and General Principle of Relativity 19 The Gravitational Field 20 The Equality of Inertial and Gravitational Mass as an Argument for the General Postulate of Relativity Read by: Laurie Anne Walden 08 -- Sections 21-23 -- Relativity Pt. 2 -- 00:20:54 21 In What Respects Are the Foundations of Classical Mechanics and of the Special Theory of Relativity Unsatisfactory? 22 A Few Inferences from the General Theory of Relativity 23 Behaviour of Clocks and Measuring Rods on a Rotating Body of Reference Read by: Annie Coleman 09 -- Sections 24-26 -- Relativity Pt. 2 -- 00:18:10 24 Euclidean and Non-Euclidean Continuum 25 Gaussian Co-ordinates 26 The Space-Time Continuum of the Special Theory of Relativity Considered as a Euclidean Continuum Read by: Meredith Hughes 10 -- Sections 27-29 -- Relativity Pt. 2 -- 00:21:30 27 The Space-Time Continuum of the General Theory of Relativity Is not a Euclidean Continuum 28 Exact Formulation of the General Principle of Relativity 29 The Solution of the Problem of Gravitation on the Basis of the General Principle of Relativity Read by: David Barnes 11 -- Sections 30-31 -- Relativity Pt. 3 -- 00:19:26 Part III: Considerations on the Universe as a Whole 30 Cosmological Difficulties of Newton's Theory 31 The Possibility of a "Finite" and Yet "Unbounded" Universe 32 The Structure of Space According to the General Theory of Relativity Read by: Linda Leu 12 -- Appendix III -- Relativity -- 00:21:22 The Experimental Confirmation of the General Theory of Relativity Read by: ML Cohen Total running time: 3:39:59 This is a Librivox recording. All Librivox recordings are in the public domain. For more information or to volunteer visit Librivox.org.

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Added: November 27, 2012, 7:08 pm
Views: 758 | Comments: 0 | Rating: Not yet rated

Gravity Explained (5) - Time
 
02:22

Gravity Explained (5) - Time

http://quarkbooks-online.com/ Download a FREE PDF copy of my manuscript: 'A Watched Kettle Never Boils.' Gravity is a 'curvature' of space-time, therefore to understand gravity we must understand time. My gravity book 'A Watched Kettle Never Boils' is now available online in PDF format: http://quarkbooks-online.com

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Added: November 27, 2012, 7:08 pm
Views: 495 | Comments: 0 | Rating: Not yet rated

Nikola Tesla's prediction for the future of the human race
 
15:13

Nikola Tesla's prediction for the future of the human race

Nikola Tesla said that "The day when we shall know exactly what electricity is will chronicle an event probably greater more important, than any other recorded in the history of the human race" This video explains a theory that the positive and negative of electric charge is linked to the reason why we have a future and a past forming an Arrow of Time. If this theory is correct then Nikola Tesla prediction was right. If our eyes worked at a different wavelength we would be able to see that electric charge is an innate property of matter. We would see that everything is radiating light wave of electromagnetic radiation continuously. Objects interact with the particle wave duality of light continuously forming new electromagnetic waves. In a new theory this universal and continuous process forms the time continuum or Arrow of time itself. Therefore the uncertainty and probability of everyday life is the same uncertainty we have in quantum physics. The atoms bound together and then collapse the particle wave duality of light in unison forming the uncertainty of their own potential future position and momentum relative to their energy or mass. We see and feel this as the forward passage of time. We have an Arrow of time, but we also have Proper Time. The rate that time flows relative to the energy or mass of an object. Time will run slower around an object of great mass forming time dilation and the geometry of Einstein's curvature of spacetime. We all form our own future spacetime relative to our energy or mass that will have a potential probability of our future position and momentum. Therefore Heisenberg's Uncertainty Principle of quantum physics is the same uncertainty that we have in our everyday life. Mirror of https://www.youtube.com/watch?v=4aF2J6ZJsdw&sns=tw

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Added: November 27, 2012, 7:08 pm
Views: 625 | Comments: 0 | Rating: Not yet rated

Gravitational Lensing
 
00:10

Gravitational Lensing

This animation illustrates how the curvature of space-time produces a focusing effect on light called a gravitational lens.

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Added: November 27, 2012, 7:08 pm
Views: 422 | Comments: 0 | Rating: Not yet rated

Quantum Entanglement in two minutes.
 
02:00

Quantum Entanglement in two minutes.

Two quantum particles that are created together are entangled. The polarization or spin will be connected however great the distance between them becomes. In a new theory called Quantum Atom Theory the Measurement Problem can be explained by explaining the continuous variable of the time continuum. Light has symmetry and geometry that forms Einsteins curvature of spacetime creating quantum Entanglement. Light will always take the simplest & most efficient path expanding out in all directions forming light spheres of EMR. The polarization of the light will be the same for the entire surface of the light sphere creating quantum entanglement and the symmetry and geometry of spacetime. Any help in the promotion of this theory on You Tube or in the scientific community will be gratefully welcomed. More Videos The Paradox of Schrodinger's Cat Quantum Mechanics an artist view The Secret of Time The Twin Paradox www.quantumartandpoetry.blogspot.com

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Added: November 27, 2012, 7:06 pm
Views: 377 | Comments: 0 | Rating: Not yet rated

Einstein's Theory Of Relativity Made Easy
 
08:30

Einstein's Theory Of Relativity Made Easy

http://facebook.com/ScienceReason ... Albert Einstein's Theory of Relativity (Chapter 1): Introduction. The theory of relativity, or simply relativity, encompasses two theories of Albert Einstein: special relativity and general relativity. However, the word "relativity" is sometimes used in reference to Galilean invariance. The term "theory of relativity" was coined by Max Planck in 1908 to emphasize how special relativity (and later, general relativity) uses the principle of relativity. --- Please subscribe to Science & Reason: • http://www.youtube.com/Best0fScience • http://www.youtube.com/ScienceMagazine • http://www.youtube.com/ScienceTV • http://www.youtube.com/FFreeThinker --- SPECIAL RELATIVITY Special relativity is a theory of the structure of spacetime. It was introduced in Albert Einstein's 1905 paper "On the Electrodynamics of Moving Bodies" (for the contributions of many other physicists see History of special relativity). Special relativity is based on two postulates which are contradictory in classical mechanics: 1. The laws of physics are the same for all observers in uniform motion relative to one another (principle of relativity), 2. The speed of light in a vacuum is the same for all observers, regardless of their relative motion or of the motion of the source of the light. The resultant theory agrees with experiment better than classical mechanics, e.g. in the Michelson-Morley experiment that supports postulate 2, but also has many surprising consequences. Some of these are: • Relativity of simultaneity: Two events, simultaneous for one observer, may not be simultaneous for another observer if the observers are in relative motion. • Time dilation: Moving clocks are measured to tick more slowly than an observer's "stationary" clock. • Length contraction: Objects are measured to be shortened in the direction that they are moving with respect to the observer. • Mass-energy equivalence: E = mc2, energy and mass are equivalent and transmutable. • Maximum speed is finite: No physical object or message or field line can travel faster than light. The defining feature of special relativity is the replacement of the Galilean transformations of classical mechanics by the Lorentz transformations. (See Maxwell's equations of electromagnetism and introduction to special relativity). --- GENERAL RELATIVITY General relativity is a theory of gravitation developed by Einstein in the years 1907--1915. The development of general relativity began with the equivalence principle, under which the states of accelerated motion and being at rest in a gravitational field (for example when standing on the surface of the Earth) are physically identical. The upshot of this is that free fall is inertial motion; an object in free fall is falling because that is how objects move when there is no force being exerted on them, instead of this being due to the force of gravity as is the case in classical mechanics. This is incompatible with classical mechanics and special relativity because in those theories inertially moving objects cannot accelerate with respect to each other, but objects in free fall do so. To resolve this difficulty Einstein first proposed that spacetime is curved. In 1915, he devised the Einstein field equations which relate the curvature of spacetime with the mass, energy, and momentum within it. Some of the consequences of general relativity are: • Time goes slower in higher gravitational fields. This is called gravitational time dilation. • Orbits precess in a way unexpected in Newton's theory of gravity. (This has been observed in the orbit of Mercury and in binary pulsars). • Rays of light bend in the presence of a gravitational field. • Frame-dragging, in which a rotating mass "drags along" the space time around it. • The Universe is expanding, and the far parts of it are moving away from us faster than the speed of light. Technically, general relativity is a metric theory of gravitation whose defining feature is its use of the Einstein field equations. The solutions of the field equations are metric tensors which define the topology of the spacetime and how objects move inertially. • http://en.wikipedia.org/wiki/Theory_of_relativity --- The Cassiopeia Project - making science simple! The Cassiopeia Project is an effort to make high quality science videos available to everyone. If you can visualize it, then understanding is not far behind. • http://www.cassiopeiaproject.com .

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Added: November 27, 2012, 7:06 pm
Views: 703 | Comments: 0 | Rating: Not yet rated

Relativity
 
01:05

Relativity

;)))... Relativity, or ∞ x 0 = 1 / My humorous illustration to the Einstein's Theory of Gravitation (General Relativity ;))) / by Alicia7777777 / made in Wonderland ;) ------- 3D animation + floating morphs ------- General relativity or the general theory of relativity is the geometric theory of gravitation published by Albert Einstein in 1916. It is the current description of gravitation in modern physics. General relativity generalises special relativity and Newton's law of universal gravitation, providing a unified description of gravity as a geometric property of space and time, or spacetime. In particular, the curvature of spacetime is directly related to the four-momentum (mass-energy and linear momentum) of whatever matter and radiation are present. The relation is specified by the Einstein field equations, a system of partial differential equations..... ;) ------- Music by Alicia7777777 (fragm) available at https://sites.google.com/site/albionella/

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Added: November 27, 2012, 7:06 pm
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General Relativity: 4 - Gravity is Geometry
 
11:02

General Relativity: 4 - Gravity is Geometry

Combining the ideas of the equivalence principle and curved spaces to develop a picture of gravity as the result of the curvature of space-time. Part of a series on general relativity

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Added: November 27, 2012, 7:06 pm
Views: 385 | Comments: 0 | Rating: Not yet rated

Time dilation in Quantum Mechanics an artist interpretation
 
10:01

Time dilation in Quantum Mechanics an artist interpretation

This is only an artist view of Quantum Mechanics and time dilation and is only a theory. But I believe the paradoxes of quantum mechanics will not make sense until we have an understanding of time. In Quantum Atom Theory time has geometry and symmetry that can explain entanglement and non-locality. This symmetry can be seen not just in mathematics but also in the beauty of Nature throughout the visual Universe. The forward momentum of electromagnetic radiation forms Einsteins curvature of spacetime and form part of the dynamically evolving geometry of time. Because it is impossible to achieve absolute zero all atoms radiate EMR continuously and it is this emission and absorption of EMR that creates the forward momentum of time at the most fundamental level. Because light is EMR in the visible spectrum this process is visible to us in the Two Slit Experiment and this video explains the paradoxes of this experiment. Time is only relative to the wave length of the object creating the spacetime. Once again this can be seen because light of different wavelengths have different colours. This theory fits in with Einsteins theories on relativity because the individual atoms create their own spacetime geometry relative to their position and momentum therefore there is no universal time. Read more at www.quantumartandpoetry.blogspot.com

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Added: November 27, 2012, 7:06 pm
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Quantum Mechanics the Hidden Variable of Time
 
09:54

Quantum Mechanics the Hidden Variable of Time

Modern physics is divided into two parts the quantum physics of probability and the classical physics of Newton with his laws of motion. Only a hidden variable could explain the probability of quantum mechanics uniting physics. The problem is such a variable would have to affect all the matter of the Universe from its creation to the present day. But there is one variable that has done just that the variable is time itself. In physics there is no understanding of the of time. But in Quantum Atom Theory time is created at the quantum level of the atoms by the emission and absorption of electromagnetic radiation from one atom to another. When light comes in contact with electrons on the surface of an atom there will be a photon electron coupling. This will cause a quantum leap of energy creating a wave function of future possibilities. In this way two dimensional space on the surface of an atom expands into three dimension spacetime. The wave function will take the form of a light sphere of quantized wave fronts. Each wave front will be quantized at the lowest level that radiant energy can affect matter the Planck constant. Because it is impossible to achieve absolute zero atoms will continuously radiate out wave fronts when a wave front comes in contact with another atom it will collapse into a moment of time and then the next wave front will create the next moment in a chain reaction creating the forward momentum of time. The probability of the Uncertainty Principle is the same probability that the observer will have with any future event. Read more at, www.quantumartandpoetry.blogspot.com

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Added: November 27, 2012, 7:06 pm
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Beyond the Higgs boson
 
09:43

Beyond the Higgs boson

A look at the theory of the Higgs mechanism and its limitations. A proposed alternative view, backed by a very substantial body of peer-reviewed science, that overcomes those limitations. Presented in a non-technical format.

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Added: November 27, 2012, 7:06 pm
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Diffusion in curved spacetimes
 
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Diffusion in curved spacetimes

Video abstract for the article 'Diffusion in curved spacetimes ' by Matteo Smerlak (Matteo Smerlak 2012 New J. Phys. 14 023019) Read the full article in New Journal of Physics at http://iopscience.iop.org/1367-2630/14/2/023019/

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Added: November 27, 2012, 7:04 pm
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