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 Relativity & Quasars: Spatial Contraction & Density

  • b2386
  • · Replies 3 ·
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3

Graduate Paths of Objects in GR: Acceleration vs Constant Velocity

  • Swapnil
  • · Replies 7 ·
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7

Undergrad Physics Definition: Matter, Energy, & Relativity

  • bernhard.rothenstein
  • · Replies 6 ·
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6

High School What is the Reason for Gravitation?

  • priya_india
  • · Replies 10 ·
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10

Graduate A video intro to General Relativity

  • Thrice
  • · Replies 10 ·
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10

Graduate How does the size of a black hole affect its ergosphere and event horizon?

  • Skhandelwal
  • · Replies 10 ·
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10

Graduate Can Shawyer's EmDrive Really Defy the Laws of Physics?

  • scott1
  • · Replies 4 ·
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4

Graduate Light deflection at high speed

  • Ich
  • · Replies 9 ·
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9

Graduate Must an observer be equidistant from two events for them to appear simultaneous?

  • pivoxa15
  • · Replies 8 ·
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8

Graduate EM Fields, Space-Time, Gravity: Unifying Theory?

  • SBryars
  • · Replies 1 ·
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1

Graduate Is it Possible to Beat a Beam of Light and Shake Hands with Yourself?

  • eNathan
  • · Replies 6 ·
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6

Graduate Is my understanding of time dilation correct?

  • kishtik
  • · Replies 5 ·
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5

Graduate Can Gravity and Electromagnetism Be Unified in Physics?

  • SBryars
  • · Replies 2 ·
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2

Graduate Does Rest Mass Affect the Bending of Spacetime?

  • Elfie
  • · Replies 24 ·
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24

Graduate Will O' Clocks Show Different Times?

  • Swapnil
  • · Replies 31 ·
2
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31

Graduate Linear Momentum in GR: Defining & Examples in Minkowski Space

  • lightarrow
  • · Replies 4 ·
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4

Graduate How Do Observers in Different Frames Perceive Simultaneity Differently?

  • Repertoire
  • · Replies 16 ·
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16

Graduate Twin Paradox: Can You Outrun Time?

  • michael879
  • · Replies 16 ·
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16

High School Light Physics: Can Photons/Electrons Travel Together?

  • alpaolo
  • · Replies 1 ·
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1

Graduate Unravelling the Mystery of Light's Constant Speed: Challenges and Proofs

  • michael879
  • · Replies 71 ·
3
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71

Graduate What if objects go toward each other rather than away

  • Skhandelwal
  • · Replies 14 ·
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14

Undergrad Can the speed of light be slowed down and what would happen if it could?

  • Quadruple Bypass
  • · Replies 19 ·
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19

Undergrad Red Shifting Light - Q&A with Wendy

  • WendyE
  • · Replies 8 ·
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8

Undergrad Velocity vs Distance - Clarifying a Moronic Question

  • jnorman
  • · Replies 31 ·
2
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31

Graduate Understanding Metrics & Forces in Extreme Situations

  • oldman
  • · Replies 44 ·
2
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44

Graduate Does Time Dilation Create a Sense of Slow Motion for Observers in Motion?

  • QuantumKing
  • · Replies 3 ·
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3

Graduate Will Accelerating a Massive Object Create a Black Hole?

  • michael879
  • · Replies 6 ·
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6

Graduate How Accurate Are Recent Tests of General Relativity Using the Double Pulsar?

  • ZapperZ
  • · Replies 9 ·
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9

Graduate Entanglement and special relativity : a paradox

  • notknowing
  • · Replies 15 ·
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15
  • Poll Poll

Graduate Painleve orbits in Cartesian Coordinates

  • CarlB
  • · Replies 4 ·
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4

Graduate Infinite Mass, Infinite Energy

  • WhyIsItSo
  • · Replies 32 ·
2
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32

Graduate Learn GR & SR Theory: Recommended Books & Math for Dummies

  • WhyIsItSo
  • · Replies 8 ·
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8

Graduate Relativity in Minkowski Space and Minkowski Diagram

  • Majid
  • · Replies 4 ·
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4

High School Why Does Approaching the Speed of Light Affect Mass and Time?

  • semidevil
  • · Replies 8 ·
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8

Graduate =Special Theory Of Relativity=

  • unscientific
  • · Replies 40 ·
2
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40

Undergrad How is the universe expanding?

  • WendyE
  • · Replies 12 ·
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12

Undergrad Is the speed of light really changing over time?

  • kuahji
  • · Replies 6 ·
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6

Graduate Basis for the postulate that all physics is the same for all inertial reference frame

  • leright
  • · Replies 26 ·
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26

Graduate Can Massive Particles Ever Reach the Speed of Light?

  • masudr
  • · Replies 8 ·
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8

Graduate Special Relativity Between Reality and Illusion

  • Manaf
  • · Replies 35 ·
2
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35

Graduate Understanding Time Dilation: A Closer Look at Relativity and Relative Motion

  • KingOrdo
  • · Replies 17 ·
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17

Graduate General relativity and dark matter

  • cymric
  • · Replies 2 ·
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2

Graduate Yet another question that is supposed to turn SR on its head

  • neutrino
  • · Replies 6 ·
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6

Graduate How Does Gravity Affect the Behavior of Light?

  • alpaolo
  • · Replies 4 ·
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4

Graduate Concerned on the relativity of lengths

  • myoho.renge.kyo
  • · Replies 4 ·
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4

Why were there so many geniuses ?

  • notknowing
  • · Replies 7 ·
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7

Graduate When moving fast, you're too busy to age

  • birulami
  • · Replies 23 ·
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23

Graduate Charge Invariant: Intuitive Reason?

  • Swapnil
  • · Replies 4 ·
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4

Graduate Why must the Lorentz Transformations Be Linear?

  • emob2p
  • · Replies 11 ·
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11

Graduate From SR to GR in an easy math (and physical) way

  • lokofer
  • · Replies 1 ·
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1

High School No meaning to go backwards in time

  • Flatland
  • · Replies 32 ·
2
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32

Graduate Should i take differential geometry?

  • ia_
  • · Replies 4 ·
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4

Graduate Why didn't Einstein just invent the concept of gravitational field?

  • Swapnil
  • · Replies 10 ·
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10

Graduate What is the Best Self-Study Book for General Relativity?

  • Swapnil
  • · Replies 15 ·
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15

Graduate Understanding Lorentz Equations and the Solution to Maxwell's Equations Variance

  • dak246
  • · Replies 19 ·
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19

Graduate General Relativity + Electrodynamics #2

  • JustinLevy
  • · Replies 10 ·
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10

Graduate What is the Meaning of Force in General Relativity?

  • lokofer
  • · Replies 5 ·
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5

Graduate General Relativity + Electrodynamics

  • JustinLevy
  • · Replies 5 ·
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5

Graduate Relativistic Interpretation of the Kennedy Thorndike Experiment?

  • clj4
  • · Replies 20 ·
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20

Undergrad What is the principle of equivalence in physics?

  • pellman
  • · Replies 5 ·
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5

Graduate What Contracts During Length Contraction in Special Relativity?

  • silverdiesel
  • · Replies 15 ·
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15

Graduate Can the Resistance to Acceleration Reveal Your Speed Relative to Light?

  • silverdiesel
  • · Replies 11 ·
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11

Undergrad Why do observers in special relativity see different measurements?

  • b2386
  • · Replies 2 ·
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2

Undergrad Black holes & expanding universe

  • ifarcas
  • · Replies 4 ·
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4

Graduate There is no gravitational dipole

  • Crosson
  • · Replies 41 ·
2
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41

Graduate Does Time Stop in a Black Hole?

  • bananan
  • · Replies 12 ·
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12

Graduate Relative Velocity: General Relativity Views & Choices

  • Oxymoron
  • · Replies 19 ·
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19

Graduate Does Relativistic Kinetic Energy Account for Mass Increase at High Speeds?

  • Born2Perform
  • · Replies 19 ·
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19

Graduate How Does Time Dilation Challenge Our Understanding of Time in Relativity?

  • myoho.renge.kyo
  • · Replies 15 ·
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15

Graduate Magnetism and radiation as a consequence of SR

  • jainabhs
  • · Replies 1 ·
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1

Graduate The Pseudo-Tensor H for Torsionless Space-Time?

  • dextercioby
  • · Replies 20 ·
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20

Graduate Time dilation experiments with spacecraft

  • Phobos
  • · Replies 5 ·
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5

Undergrad Is Tensor Algebra Necessary to Understand General Relativity?

  • jainabhs
  • · Replies 1 ·
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1

Undergrad Difference between mass (relativistic & non)

  • kc7rad
  • · Replies 23 ·
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23

Graduate The Future Predestined? Near Lightspeed Travel & Quantum Teleportation

  • blackwizard
  • · Replies 10 ·
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10

Graduate Discover the World of SR and GR Theory: Free Resources and Expert Tips

  • jainabhs
  • · Replies 1 ·
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1

Graduate Galileo's Relativity: Theory of Clocks Synced by Signal?

  • bernhard.rothenstein
  • · Replies 1 ·
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1

Graduate Question about speed of light and black holes

  • Nexus555
  • · Replies 1 ·
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1

Graduate How Can Numerical Solutions to General Relativity Enhance Computational Physics?

  • lokofer
  • · Replies 2 ·
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2

Graduate How Does the Twin Paradox Illustrate Time Dilation in Relativity?

  • blackwizard
  • · Replies 3 ·
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3

Graduate Gravitons & spacetime-curvature-geometry

  • bananan
  • · Replies 4 ·
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4

Graduate Equations of Motion with Covariant Derivatives and Momentum Density

  • lokofer
  • · Replies 2 ·
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2

Undergrad Is Spacetime Curved by Gravity?

  • Ace Nova
  • · Replies 18 ·
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18

Graduate How Does Relativity Explain Magnetic Fields from Moving Charges?

  • Swapnil
  • · Replies 9 ·
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9

Graduate C - Speed of Light: Is Time Relative?

  • Tzemach
  • · Replies 7 ·
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7

Graduate Can space-time rotations create time machines in General Relativity?

  • lokofer
  • · Replies 2 ·
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2

Graduate Obtaining the Hamiltonian for Einstein's Lagrangian: A Wheeler-De Witt Approach

  • eljose
  • · Replies 1 ·
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1

Graduate What are the limits of acceleration in special and general relativity?

  • Donnie Darko
  • · Replies 9 ·
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9

Graduate Silly classical + relativity question.

  • h4x
  • · Replies 1 ·
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1

Graduate Locality and non-locality in period measurement

  • bernhard.rothenstein
  • · Replies 2 ·
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2

Graduate How does the direction of rotation impact time dilation on a rotating object?

  • Jorrie
  • · Replies 5 ·
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5

Graduate Is Relativity Valid Inside Matter?

  • notknowing
  • · Replies 13 ·
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13

Graduate Rotating Disc & Speed of Light ?

  • sabin
  • · Replies 3 ·
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3

Graduate How Does Gravity Warp Spacetime for a Planet's Path?

  • daniel_i_l
  • · Replies 19 ·
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19

Graduate What is the relationship between the Doppler effect and proper time?

  • bernhard.rothenstein
  • · Replies 8 ·
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8

Undergrad Where will the lead and plastic balls settle in microgravity?

  • Jorrie
  • · Replies 2 ·
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2

Graduate What if inertial mass did NOT = grav. mass?

  • smithpa9
  • · Replies 92 ·
4
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92

Graduate Weyl tensor on 3-dimensional manifold

  • sroeyz
  • · Replies 6 ·
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6

Graduate Interpreting Time, Mass & Length in Special Relativity

  • MeJennifer
  • · Replies 38 ·
2
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38

Graduate Relativistic and not relativistic motions

  • bernhard.rothenstein
  • · Replies 2 ·
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2