Special and General Relativity Forum

Join in expert discussion on special and general relativity discussion. Relativity is the dependence of various physical phenomena on relative motion of the observer and the observed objects.

Threads

Graduate Absolute light speed or velocity or both?

  • Faradave
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Graduate Time dilation where there is no net gravity?

  • jaketodd
  • · Replies 9 ·
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9

Graduate Gravitational Waves: Do They Bend Like Light?

  • cragar
  • · Replies 14 ·
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14

Graduate Different acceleration in an accelerating rocket?

  • Ascenxion
  • · Replies 16 ·
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16

Undergrad In Ensteins theroy of gravity.when a cannon ball is fired up,it

  • latter
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Graduate Einstein's Field Equation: 4D Spacetime & Cosmological Constant

  • wam_mi
  • · Replies 6 ·
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Graduate Can You Get a Cosmic Tan from Lights Across the Universe?

  • Aaron_Shaw
  • · Replies 3 ·
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Graduate Straight line through spacetime.

  • Rotormaster
  • · Replies 58 ·
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Graduate Torsion and the conservation of angular momentum

  • micomaco86572
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Graduate A clever cosmologist refutes relativity

  • Nabeshin
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Graduate Why relativistic momentum appears not conserved across frames

  • Battlemage!
  • · Replies 5 ·
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Graduate Relativistic Effects: When to Consider v/c Ratios

  • Sonko
  • · Replies 2 ·
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Graduate Why isn't the Cotton tensor identical zero?

  • archipatelin
  • · Replies 5 ·
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Graduate How can we use differential geometry to improve our understanding of SR?

  • Fredrik
  • · Replies 28 ·
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Graduate Motion and the Warping of Space

  • daisey
  • · Replies 1 ·
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Graduate Relative speed of light paradox

  • Pawl
  • · Replies 17 ·
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Undergrad Relativity & Heat: Does Speed Increase Heat Needed?

  • Acut
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  • Poll Poll

Graduate Gravity speed vs light speed experiment

  • 1bobwhite
  • · Replies 39 ·
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Graduate Acceleration inside an event horizon

  • jaketodd
  • · Replies 15 ·
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Graduate A ambiguous variation of Einstein-Hilbert action

  • archipatelin
  • · Replies 1 ·
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Graduate Length contraction (objects & space or objects only)

  • tabarnard
  • · Replies 10 ·
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Graduate Time Dilation/Proper Time Question

  • Lucretius
  • · Replies 17 ·
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17

Graduate Vacuum solutions, and Explicit source terms

  • JustinLevy
  • · Replies 8 ·
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8

Graduate Trying to understand linear frame dragging

  • jaketodd
  • · Replies 6 ·
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Graduate Derivation of Relativistic Momentum

  • rrrright
  • · Replies 6 ·
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Graduate Why is charge/current density 4 vector a twisted differential 3-form?

  • stevenb
  • · Replies 2 ·
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Graduate Compact support of matter fields

  • haushofer
  • · Replies 4 ·
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Graduate Raychaudhuri equation in Jacobson's paper (gr-qc/9504004) ?

  • im_hammer
  • · Replies 2 ·
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Graduate The speed of light and time dilation

  • Repertoire
  • · Replies 12 ·
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Graduate Conservation of momentum a universal truth

  • stevmg
  • · Replies 33 ·
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Undergrad How does motion affect the potential energy of a spring?

  • ravisastry
  • · Replies 4 ·
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Graduate Relativistic centripetal force

  • yuiop
  • · Replies 195 ·
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Graduate Why is the speed of light a hard limit in special relativity?

  • MasterZoran
  • · Replies 28 ·
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Undergrad Challenge to the 1st postulate

  • p.tryon
  • · Replies 2 ·
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Graduate Pound-Rebka Experiment: Understanding Gamma Ray Detection & Doppler Effect

  • cragar
  • · Replies 5 ·
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5

Graduate Struggling with the relationship between the Lagrangian L and the interval ds?

  • jeebs
  • · Replies 4 ·
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Graduate Can Fermat's principle be applied to gravitational lensing?

  • SpitfireAce
  • · Replies 11 ·
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Graduate Time dilation in biological processes

  • Darkmisc
  • · Replies 2 ·
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Graduate Is a zero Ricci scalar the defining characteristic of a 'flat' spacetime?

  • Jerbearrrrrr
  • · Replies 6 ·
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Graduate I don't understand why your clock slows down

  • taybot
  • · Replies 19 ·
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Graduate Gravity and Time Dilation: Length Contraction and Mass Inflation?

  • HarryWertM
  • · Replies 30 ·
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Graduate Do magnetic fields affect the speed of light in the Pound-Rebka experiment?

  • cragar
  • · Replies 2 ·
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Graduate Gravitational Field & Light Speed: Is Time a Scalar Quantity?

  • Zman
  • · Replies 30 ·
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Graduate Generality of theta=pi/2 in Schwarzchild

  • ghetom
  • · Replies 8 ·
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Graduate Does the Universe spin (does it have an angular momentum)?

  • TCS
  • · Replies 4 ·
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4

Graduate Relativity vs Quantum Mechanics

  • Karmic Leprec
  • · Replies 14 ·
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Graduate Energy in Schwarzschild geometry

  • stevebd1
  • · Replies 9 ·
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Graduate Mach's Principle and the Accelerating Universe

  • e2m2a
  • · Replies 3 ·
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Graduate BRS: The FRW Dust with E^3 Hyperslices - Discussion

  • Ich
  • · Replies 31 ·
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Graduate Gravity: Does it Really Exist? Physics & Math Explained

  • bluesman50
  • · Replies 14 ·
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Graduate Understanding Relativity: The Concept of Time and the Speed of Light Explained

  • Hrash0
  • · Replies 26 ·
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Graduate Albert Einstein's Theory of Relativity

  • walker669
  • · Replies 3 ·
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Graduate Do not believe this letter on gravitational radiation

  • cellotim
  • · Replies 4 ·
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Graduate Stress-energy tensor diagonalization

  • djy
  • · Replies 5 ·
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Graduate Poincaré Gauge Theory: Facts, Popularity, Flaws & Experiments

  • micomaco86572
  • · Replies 1 ·
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Undergrad Understanding Mass-Energy Equivalence to Fdx and dm in E=mc^2

  • rrrright
  • · Replies 2 ·
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Graduate What Are the Timelike and Null Coordinates Used in the Schwarzschild Metric?

  • off-diagonal
  • · Replies 4 ·
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Graduate Gravity's Restoring Force - Explained

  • fys iks!
  • · Replies 1 ·
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Graduate Are Lorentz and Poincare insufficiently credited for special relativity?

  • petergreat
  • · Replies 2 ·
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Undergrad Why aren't you accelerating when you fall

  • taybot
  • · Replies 25 ·
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Graduate Does the presence of mass affect the curvature and growth of space-time?

  • D.S.Beyer
  • · Replies 6 ·
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Graduate Unraveling the Mystery of Gravity: The Role of Mass in Space-Time Distortion

  • gsingh2011
  • · Replies 58 ·
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Undergrad Is there such a thing as the Null Speed in the concept of motion and relativity?

  • julz
  • · Replies 2 ·
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2

Graduate Frame of reference of any observer

  • paweld
  • · Replies 4 ·
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4

Undergrad Do gravitational waves have different frequencies?

  • Mu naught
  • · Replies 14 ·
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14

Graduate Example of Unsymmetrical Metric: 2D Solutions

  • paweld
  • · Replies 4 ·
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4

Undergrad Does e=mc² account for the direction of light?

  • ingodszoo
  • · Replies 8 ·
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8

Graduate Energy & Momentum: The Effects of Photons on Stars

  • espen180
  • · Replies 4 ·
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4

Graduate Understanding GR Better: Metric Spaces & Differential Geometry Courses

  • madness
  • · Replies 2 ·
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2

Graduate Understand 'One Form' Vector & Covariant - Relativity Demystified

  • jainabhs
  • · Replies 26 ·
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26

Graduate Do all observers agree on gravitational mass?

  • nickyrtr
  • · Replies 14 ·
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14

Undergrad Understanding Gravity: Properties & Effects

  • Morga
  • · Replies 33 ·
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33

Graduate Is Relativistic Mass Consistent in Inelastic Collisions?

  • snoopies622
  • · Replies 7 ·
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Graduate How long does a ray of light travel for based on ITS time scale

  • swraman
  • · Replies 5 ·
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5

Graduate Is the Proof of E=mc² Valid for Accelerating Objects in Special Relativity?

  • pc2-brazil
  • · Replies 35 ·
2
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35

Graduate Green's function for Klein-Gordno equation in curved spacetime

  • paweld
  • · Replies 1 ·
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1

Graduate Correction term to Newtons gravitation law

  • Kurret
  • · Replies 11 ·
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11

Graduate What kind of 'rotation' is the Gaililean transformation?

  • AdVen
  • · Replies 20 ·
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20

Graduate Can Total Energy Be Less Than Rest Energy in Special Relativity?

  • tkav1980
  • · Replies 4 ·
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4

Graduate Is Proper Time Contraction Valid for Accelerated Watches?

  • facenian
  • · Replies 47 ·
2
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Undergrad Relative Velocity of two particles

  • Starwanderer1
  • · Replies 59 ·
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59

Graduate Is the distance relative also?

  • xponential
  • · Replies 3 ·
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3

Graduate Distnace between points and isometric mapping

  • paweld
  • · Replies 4 ·
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4

Graduate Does mass increase in SR mean higher gravity in GR?

  • I812
  • · Replies 41 ·
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41

Undergrad If you were out in space, motionless

  • taybot
  • · Replies 7 ·
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7

Graduate Can a Slower Spacecraft Overtake a Faster One in Relativistic Travel?

  • robertbogdon
  • · Replies 7 ·
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7

Graduate Why is speed of light constant?

  • Tantalos
  • · Replies 4 ·
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4

Graduate Would it Feel as if Time Stopped If I Became Light?

  • xcrunner2414
  • · Replies 79 ·
3
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79

Undergrad Time Dilation: How Can a Watch Tick Slower?

  • Frannas
  • · Replies 2 ·
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2

Graduate Does time obey the inverse square law?

  • D.S.Beyer
  • · Replies 4 ·
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4

Graduate Extrinsic properties of the curved space

  • Dmitry67
  • · Replies 16 ·
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16

Graduate Lorentz transformation as a higher dimensional rotation

  • closet mathemetician
  • · Replies 9 ·
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9

Graduate Lorentz boost and equivalence with 3d hyperbolic rotations

  • chwie
  • · Replies 2 ·
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2

Graduate Spacetime proven or is the Graviton still alive?

  • jaketodd
  • · Replies 3 ·
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3

Undergrad What's it like if I were standing on earth's axis?

  • Exists2Wonder
  • · Replies 22 ·
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22

Graduate Spaceship flying towards earth at relativistic speeds?

  • novop
  • · Replies 4 ·
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4

Graduate Membrane Theory: Questions & Ideas Explored

  • Grimstone
  • · Replies 3 ·
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3

High School What is E=mc² What is it used for?

  • Jadaav
  • · Replies 5 ·
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5

Undergrad Scenario allowing a signal to travel at superluminous speeds?

  • TheGoodDoctor
  • · Replies 1 ·
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1

Graduate Gravity and acceleration near to the speed of light

  • Smarky
  • · Replies 2 ·
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2