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 equation - calculating the algebraic limit
- skynelson
- · Replies 11 ·
Graduate What would happen if we rode on a light beam?
- mcmagicman530
- · Replies 2 ·
Graduate Special relativity simulation issue
- Tac-Tics
- · Replies 11 ·
Undergrad Equal and opposite electric fields?
- granpa
- · Replies 5 ·
Graduate Does Lorentz Contraction Affect Perceived Distances at Near-Light Speeds?
- duordi
- · Replies 17 ·
Graduate Does superposition hold for relativistic particles?
- granpa
- · Replies 7 ·
Graduate A question regarding relativity and information transport
- janakiraman
- · Replies 13 ·
Graduate Time dilation limit? (how much does time dilate at c )
- lavand
- · Replies 18 ·
Graduate Force-free motion from a busted Lagrangian
- Mentz114
- · Replies 15 ·
Graduate Why is the time dimension multiplied by c^2?
- redtree
- · Replies 16 ·
Graduate Light cones in faster than light travel
- mcmagicman530
- · Replies 2 ·
High School Does E=mc² mean mass converts to energy at light speed?
- Xyooj
- · Replies 12 ·
Graduate How can the Rindler metric be derived for a uniform gravitational field?
- snoopies622
- · Replies 14 ·
Graduate Bouncing light question faster than c?
- RespeckKnuckl
- · Replies 5 ·
Graduate Why do massive particles move faster than light through water?
- shamrock5585
- · Replies 25 ·
Graduate Gravitational potential from QM-like phase
- Jonathan Scott
- · Replies 2 ·
Graduate Metric Tensor Question: Special Relativity
- Someone1987
- · Replies 2 ·
Graduate Proving that the scalar product is invariant
- Someone1987
- · Replies 2 ·
Undergrad What physically happens to the object as it increases in mass
- mr-tom
- · Replies 5 ·
Graduate Bondi k and everyday clock synchronization
- bernhard.rothenstein
- · Replies 5 ·
Graduate Is Faster-than-Light Travel Possible with Constant Acceleration?
- nahkaimurrao
- · Replies 42 ·
Graduate Uniqueness of solutions to EFE?
- Hurkyl
- · Replies 3 ·
Graduate Comparing Charge and Gravity: Do They Follow the Same Rules of Motion?
- duordi
- · Replies 19 ·
Graduate Would the Pendulum's Shadow Vibrate at PHz on a Moving Wall?
- Hippasos
- · Replies 4 ·
Graduate Why Does Understanding GPS and Relativity Matter for Black Hole Exploration?
- OS Richert
- · Replies 7 ·
Graduate Principle of relativity and energy?
- FeynmanMH42
- · Replies 11 ·
Graduate Does charge change with velocity?
- duordi
- · Replies 8 ·
Graduate Watching young's double slit experiment in moving frame
- Sourabh N
- · Replies 12 ·
Graduate What is synchronization gauge?
- bernhard.rothenstein
- · Replies 1 ·
Graduate Conservation of Energy in GR - Is Potential Energy Still Valid?
- mysearch
- · Replies 5 ·
Undergrad Gravity as Expansion: How Do Orbits Stay Constant?
- breedb
- · Replies 2 ·
Graduate How does light travel at its speed without infinite mass?
- Dave9600
- · Replies 28 ·
Graduate What Are Closed Timelike Curves?
- Champion
- · Replies 2 ·
Graduate Can we find massless particles at rest?
- mite
- · Replies 13 ·
Graduate Twin paradox with a third observer in a quasi-uniform gravitational field
- Al68
- · Replies 16 ·
Undergrad GRAVITY its time we figured it out.
- Thebrokentree
- · Replies 16 ·
Graduate Why does E² = (m₀c²)² + (pc)² differ from E = m₀c² + ½mv²?
- mysearch
- · Replies 5 ·
Graduate Does massless particles experience gravity
- mite
- · Replies 6 ·
Graduate Riemann curvature tensor as second derivative of the metric
- jdstokes
- · Replies 2 ·
Graduate How Does Photon Momentum Exist Without Mass?
- jspstorm
- · Replies 7 ·
Graduate Does Light Bend Spacetime and Have a Gravitational Pull?
- Tomtom
- · Replies 9 ·
Graduate What is the cause of spacetime curvature?
- physlad
- · Replies 6 ·
Undergrad Do Clocks Run Slower in Weaker Gravitational Fields?
- bobbyk
- · Replies 9 ·
Graduate Robertson-Walker metric in higher dimensions (and problematic Riemann tensor)
- wildemar
- · Replies 4 ·
Graduate Sum of the forces and torques = 0
- aranoff
- · Replies 20 ·
Graduate What exactly is stopping us from unifying GR and quantum mechanics?
- epkid08
- · Replies 26 ·
Graduate What is the Origin of the Spatial Metric in Non-Inertial Frames?
- jdstokes
- · Replies 4 ·
Undergrad Speed of civilisation development
- northcave
- · Replies 8 ·
Undergrad Relative Velocity: Henrik's Understanding
- Hernik
- · Replies 2 ·
Graduate Effect of acceleration on space-time fabric
- mite
- · Replies 1 ·
Undergrad Why does light have the speed it does?
- rogerp
- · Replies 42 ·
Graduate Is Time Travel Possible and Already Happening in Our World?
- epkid08
- · Replies 40 ·
Graduate How Do Covariant, Contravariant, and Mixed Tensors Transform?
- Reedeegi
- · Replies 1 ·
Graduate Matrix Representation of Tensors?
- Reedeegi
- · Replies 4 ·
Graduate Is the ds² Expression for a Uniform Gravitational Field Correct?
- snoopies622
- · Replies 7 ·
Graduate A new angle on the Right Angle Lever Paradox.
- yuiop
- · Replies 27 ·
Graduate What's the G-forces in a black hole event horizon?
- gaming_addict
- · Replies 7 ·
Graduate Why do both observers see each other aging slower at 0.5c?
- dkgolfer16
- · Replies 44 ·
Graduate Another Schwarzschild question
- snoopies622
- · Replies 38 ·
Graduate Is this a valid derivation of E=mc^2?
- dontbesilly
- · Replies 12 ·
Graduate Can a shadow's motion exceed the speed of light at large distances?
- yeti1112007
- · Replies 4 ·
High School Michelson-Morley experiment proves nothing
- yeti1112007
- · Replies 11 ·
Graduate Understand Einstein Hole Argument: Norton's Expln & General Covariance
- ecce.monkey
- · Replies 57 ·
Graduate Gravitational Theory, Don´t grasp it.
- Moris526
- · Replies 5 ·
Graduate How is velocity defined in relativity and who measures it?
- Nizzeberra
- · Replies 9 ·
Undergrad How can mass and energy approach infinity as speed approaches c?
- km90
- · Replies 2 ·
Graduate Bends in Space-Time vs Invariance
- WCOLtd
- · Replies 1 ·
Graduate How are Coordinates Defined in General Relativity?
- jdstokes
- · Replies 5 ·
Graduate Can you walk forward in a spaceship traveling at 0.999999999999999 c?
- orgmark
- · Replies 56 ·
Graduate Do Extra Dimensions Really Matter Before String Theory?
- tnadys
- · Replies 1 ·
Graduate Derivative of metric tensor with respect to itself
- jdstokes
- · Replies 5 ·
Undergrad How does Einstein's model explain the relationship between gravity and energy?
- liam.buchanan
- · Replies 11 ·
Graduate How two clocks can each run slow in the other's reference frame
- jtbell
- · Replies 8 ·
Graduate Does gravitational potential energy contribute to mass?
- Denton
- · Replies 19 ·
Graduate Does relativistic mass approaching infinity prove c is the speed limit?
- epkid08
- · Replies 27 ·
Graduate Uniting quantum physics with the theory of relativity
- Bjarne
- · Replies 7 ·
Graduate Why are clocks at opposite ends of an accelerating ship out of sync in the rest frame?
- PatPwnt
- · Replies 2 ·
Graduate Can a massive object reach the speed of light?
- UltraViolet
- · Replies 13 ·
Graduate The hole argument and diffeomorphism invariance
- hellfire
- · Replies 4 ·
Graduate Behavior of light accelerating
- Chatt
- · Replies 2 ·
Graduate Velocity and proper acceleration
- rhz_prog
- · Replies 1 ·
Undergrad What Do We Understand About Gravity?
- orgmark
- · Replies 23 ·
Graduate Do Closed Timelike Curves Exist?
- twoface42
- · Replies 31 ·
Graduate Alternative notation for metric equations to avoid ds confusion
- DrGreg
- · Replies 12 ·
Undergrad Time dilation also for accelarated motion?
- Rhian
- · Replies 1 ·
Undergrad Why doesn't the Earth observer's clock slow down from the plane's frame?
- armaan
- · Replies 2 ·
Graduate Define Electromagnetic Spacetime
- Lorensatcho
- · Replies 8 ·
High School What happens to an object's gravity when its mass converts to energy?
- teroenza
- · Replies 3 ·
Graduate Why Does the Simultaneity Equation Use Gamma Squared?
- skynelson
- · Replies 1 ·
Graduate Why Does the Standard Model Not Account for the Mass of Potential Energy?
- beeresearch
- · Replies 6 ·
Graduate Coming to terms with the velocity addition formula
- adimare
- · Replies 1 ·
Graduate What motivated Einstein to develop GR?
- quasar987
- · Replies 9 ·
Graduate Thought Experiment: Spaceship, Photon, and Relativity Explained in Simple Terms
- Chatt
- · Replies 3 ·
Graduate Is the Delta function squared in the Kerr metric?
- Orion1
- · Replies 2 ·
Undergrad Why do radio and gamma photons arrive at the same time?
- Applemush
- · Replies 58 ·
Graduate Who Ages Faster in Relativistic Travel?
- phja
- · Replies 1 ·
Graduate Is the Shapiro Delay a Result of Space Curvature or Time Dilation?
- Zman
- · Replies 1 ·
Graduate Does space dilate in general relativity and how is it measured?
- Zman
- · Replies 9 ·
Graduate Geometric Algebra and Spacetime Split: What are the Applications?
- heafnerj
- · Replies 2 ·
Graduate Why do both spacemen think their own light clock ticks faster?
- aeromedic
- · Replies 24 ·