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
Undergrad Hasn't Gravitational Lensing Already Proved Einstein? (LIGO)
- dlivingston
- · Replies 10 ·
Graduate Oscillating masses and gravitational waves
- DaTario
- · Replies 33 ·
Graduate Gravitational Wave Shapes: 3D Oscillations, Creepy Earthworms & More
- DiracPool
- · Replies 1 ·
Graduate Learning GRT: Why the High Frequency Search?
- exmarine
- · Replies 36 ·
Graduate Gravitational Waves: Speed, Catching Up & Rules
- tionis
- · Replies 7 ·
Undergrad Duration of recently measured gravitational waves
- fog37
- · Replies 22 ·
Graduate Can Classical Mechanics Calculate Time Dilation?
- AndromedaRXJ
- · Replies 8 ·
Graduate Gravitational Waves or Tidal Effects: What's the Key Difference?
- giulio_hep
- · Replies 3 ·
Graduate Dispersion of gravitational waves
- bcrowell
- · Replies 20 ·
Graduate Gravity Waves: Energy Transfer from Observation
- NC_Seattle
- · Replies 4 ·
Graduate Questions About Spatial Orientation of Event w/ Respect to LIGO
- Raffer
- · Replies 2 ·
High School Gravitational Waves & Space-Time: Is There Proof?
- RandAlthor
- · Replies 1 ·
Undergrad Gravitational Lensing: The Impact of a Massive Earth
- paaru
- · Replies 3 ·
Graduate Deriving geodesic equation using variational principle
- dwellexity
- · Replies 29 ·
Graduate Does time stop at the singularity?
- black hole 123
- · Replies 7 ·
High School Release of gravitational waves, with small collistions?
- DSthe
- · Replies 1 ·
Graduate Low speed limit of Lorentz transformations
- ShayanJ
- · Replies 19 ·
Undergrad Gravity Waves and Superposition?
- iramos2488
- · Replies 9 ·
Graduate What must be one's speed, relative to a frame S, in order....
- cosmos42
- · Replies 4 ·
Undergrad Relativity Q: Does Earthly Time Pass Slower to Outer Space Observers?
- Andre Notbright
- · Replies 5 ·
Graduate Theoretical Understanding of Gravitational Waves
- Isaac0427
- · Replies 2 ·
High School Gravitational Waves and Gravitons
- SuperGadger
- · Replies 1 ·
Graduate Black Hole Evaporation: Confusing Red Particle & Time Dilation
- Narasoma
- · Replies 9 ·
Graduate Gravity Wave Discovery and Gravitons
- ptalar
- · Replies 18 ·
Graduate How does GR allow for recession speeds >c?
- rede96
- · Replies 16 ·
Graduate Orbit precessions - General Relativity vs Newton
- Cobalt101
- · Replies 38 ·
Graduate How Does Gravity Escape a Black Hole?
- black hole 123
- · Replies 5 ·
Graduate 2 photons, same starting point/time, same end point
- 69911e
- · Replies 6 ·
Undergrad What Are Gravitational Waves and How Do They Work?
- Shrish
- · Replies 1 ·
Undergrad Writing an Abstract for Special Relativity: Tips & Tricks
- Ashley1nOnly
- · Replies 2 ·
Graduate Problem about equality of energy formulas
- georg gill
- · Replies 17 ·
Graduate Experimental detection of gravitational waves confirmed
- Dr. Courtney
- · Replies 1 ·
Graduate Length Contraction: Does It Really Occur?
- kent davidge
- · Replies 6 ·
Graduate Can We Ever Observe Inside a Black Hole's Event Horizon?
- sandy stone
- · Replies 5 ·
Graduate Length Contraction & Simultaneity: Train-and-Platform Experiment
- mrsmitten
- · Replies 7 ·
Undergrad Acceleration without force is possible in relativity
- ravi#
- · Replies 35 ·
Graduate Understanding Relativity of Simultaneity
- Cobalt101
- · Replies 4 ·
Graduate Understand Contravariant Transformations b/w Coordinate Systems
- space-time
- · Replies 1 ·
Graduate Proving Time Dilation: Troubleshooting Tips
- dwellexity
- · Replies 3 ·
Graduate Gravity as geometry vs as a force
- Cobalt101
- · Replies 2 ·
Graduate Ray of light through an elevator
- DiracPool
- · Replies 5 ·
Graduate How Do the Axes of the Minkowski Diagram Work?
- JohnnyGui
- · Replies 17 ·
Graduate Faster than light travel implications
- Cobalt101
- · Replies 15 ·
Graduate Time Travel at c: Photon's Perspective
- Cobalt101
- · Replies 2 ·
Graduate Why Does Light Travel the Shortest Path?
- Cobalt101
- · Replies 10 ·
Graduate Gravity Manipulation: Benefits and Implications
- PhysicsKush
- · Replies 3 ·
Graduate How is information lost if nothing passes the event horizon?
- greypilgrim
- · Replies 6 ·
Graduate What determines when events are simultaneous?
- idea2000
- · Replies 9 ·
Graduate Light Wavelengths in Moving Frames: A Closer Look at the In-Phase Problem
- Adel Makram
- · Replies 6 ·
Undergrad Special Relativity Books: An Illustrated Guide & Beyond
- Zaid Ghazal
- · Replies 3 ·
Graduate How can EM interaction escape a black hole?
- greypilgrim
- · Replies 10 ·
Graduate Einstein Tensors and Energy-Momentum Tensors as Operators
- Alain De Vos
- · Replies 3 ·
Graduate Two dimensional Lorentzian vs Euclidean geometry
- pervect
- · Replies 11 ·
Graduate Testing Einstein's Theory: What if Bob Jumps Off the Empire State Building?
- DiracPool
- · Replies 14 ·
Undergrad Why does light Ray bend in accelerating elevator but not...
- Snip3r
- · Replies 28 ·
Graduate GR Metric Tensor Rank 2: Quadratic vs Shear Forces
- DiracPool
- · Replies 1 ·
High School Why aren't standard rods and clocks affected by LC and TD?
- loislane
- · Replies 40 ·
Graduate Deriving E=mc^2 from relativistic doppler effect
- bubblewrap
- · Replies 4 ·
Graduate Calc Rotational E of 6km Bar: Einstein's Method
- Jens
- · Replies 5 ·
Insights Struggles with the Continuum - Part 4 - Comments
- john baez
- · Replies 5 ·
Graduate Deriving Lorentz Transforms: Unnecessary Step?
- kmm
- · Replies 3 ·
Undergrad Why can't Gravitational Accelerations vanish everywhere?
- beyondthemaths
- · Replies 69 ·
Graduate Event Horizon Conflicts: Understanding the Unknown
- _PJ_
- · Replies 13 ·
Graduate Has information been lost to a black hole?
- rjbeery
- · Replies 10 ·
Graduate Astronomer's Induction of Observed Gamma/Radio Flashes in Isosceles Triangle
- Ontophobe
- · Replies 3 ·
Graduate Two blobs alone in the Universe
- bland
- · Replies 1 ·
Graduate What is the Concept of Tenseless Space-Time?
- Ontophobe
- · Replies 4 ·
Graduate How is the magnetic field related to Special Relativity
- arydberg
- · Replies 12 ·
Graduate SR Kinetic Energy Mass Increase for Uncharged Particles?
- LarryS
- · Replies 10 ·
Graduate Gravitational Lensing of Fast Receding Galaxies: Does Speed of Light Matter?
- Einstein's Cat
- · Replies 5 ·
High School Multiple Infalling to Black Hole Horizon: Alice, Bob & Charlie
- _PJ_
- · Replies 5 ·
Undergrad Why is the medium in the Michelson Morley experiment ignored
- mrsmitten
- · Replies 19 ·
Graduate Time dilation magnitude in orbit around a black hole
- robartinc
- · Replies 2 ·
Graduate Proving Lorentz Transform Without Light Signal
- Shrish
- · Replies 9 ·
Graduate Explaining Tensors in Special Relativity
- Wminus
- · Replies 5 ·
Undergrad Electric Field of Moving Charge: Effects on Distance
- jartsa
- · Replies 4 ·
Graduate Questioning Constant Acceleration & Sanity - Is Something Wrong?
- somethingswrong
- · Replies 7 ·
Graduate Metrics: Stationary & Rotating - Can They Coexist?
- Emilie.Jung
- · Replies 6 ·
Graduate Relativistic Time & Mass-Energy Phasors
- DiracPool
- · Replies 1 ·
Graduate Electric Field & Motion: Understanding Why it Doesn't Change
- Cluemore
- · Replies 4 ·
Graduate Stress Energy Components: 3 or 4 Densities?
- Ryan Rankin
- · Replies 2 ·
Graduate Speed of light and acceleration in general relativity
- Rerry
- · Replies 27 ·
Insights Struggles With the Continuum - Part 3 - Comments
- john baez
- · Replies 20 ·
Graduate From the point of view of the speed of light
- ScientificMind
- · Replies 3 ·
Undergrad How Does Observer Motion Affect Calculated Work in Relativity?
- ravi#
- · Replies 42 ·
Undergrad The cause of spacetime and gravity
- victorhugo
- · Replies 3 ·
Graduate Covariant Characterization of Causality in Continuum: T^{ik}v_k
- Emil_M
- · Replies 7 ·
Graduate Light cone shape while speeding up
- The Count
- · Replies 10 ·
Graduate Gravitational Radiation and Cosmological Constant
- Markus Hanke
- · Replies 3 ·
Undergrad Gravitational time dilation, how much?
- Erland
- · Replies 30 ·
Graduate Giancoli's Treatment of GR & Cosmology: Shockingly Inaccurate
- bcrowell
- · Replies 11 ·
Graduate Conserved quantities for massless particles (Schwarzschild)
- astrolollo
- · Replies 15 ·
Graduate Newton's 2nd law for Massless Particles in SR
- andresB
- · Replies 12 ·
Graduate Two-mass Schwarzschild metric instead of Kerr metric?
- Rlam90
- · Replies 14 ·
Graduate Simultaneity: how can all observers be right?
- DAC
- · Replies 16 ·
Graduate How is the Einstein field equation converted to its tensor form?
- TimeRip496
- · Replies 1 ·
Undergrad E=mc^2 how you picture it in nature?
- Tom Minogue Hastings
- · Replies 7 ·
Graduate Accelerating or Decelerating Universe Expansion?
- Ontophobe
- · Replies 5 ·
Undergrad Length contraction: Is it permanent?
- Bertrand Boucquillon
- · Replies 31 ·
Graduate Will a Photon Clock Tick Faster or Slower When Moving Towards You?
- Iconoclast
- · Replies 8 ·