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 Gravitational Waves research and Dark Matter
- Gerinski
- · Replies 5 ·
Graduate Do gravitational waves change the odds that gravitons exist?
- ScientificMind
- · Replies 1 ·
High School Relativity of simultaneity and the balance of the systems
- Sisoeff
- · Replies 66 ·
Graduate Why do objects move along geodesics without a force?
- FallenApple
- · Replies 8 ·
Graduate Damping of Gravitational Waves
- anorlunda
- · Replies 7 ·
Graduate How Would You Experience Gravitational Waves at 1 Light Year?
- DaveC426913
- · Replies 10 ·
Graduate Why can we observe past events but not future ones in spacetime?
- BTBlueSkies
- · Replies 7 ·
Graduate Can black holes have densities comparable to entire galaxies?
- Borek
- · Replies 35 ·
High School Gravitational Waves: What Keeps Space-Time Together?
- Dipto
- · Replies 6 ·
Graduate Computing all 256 components of the Riemann curvature tensor
- Kevin McHugh
- · Replies 5 ·
Graduate Why do gravitational waves move at the speed of light?
- Mark Harder
- · Replies 10 ·
Undergrad Hasn't Gravitational Lensing Already Proved Einstein? (LIGO)
- dlivingston
- · Replies 10 ·
Graduate Oscillating masses and gravitational waves
- DaTario
- · Replies 33 ·
Graduate How do gravitational waves propagate in 3D and what structures do they form?
- DiracPool
- · Replies 1 ·
Graduate Learning GRT: Why the High Frequency Search?
- exmarine
- · Replies 36 ·
Graduate Can I catch up to a gravitational wave?
- tionis
- · Replies 7 ·
Undergrad Duration of recently measured gravitational waves
- fog37
- · Replies 22 ·
Graduate Can Classical Mechanics Calculate Time Dilation?
- AndromedaRXJ
- · Replies 8 ·
Graduate Why do gravitational waves release energy if momentum is conserved?
- 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 Do gravitational wave detections prove spacetime exists?
- 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 Speed needed for clocks to lose 1 second or 1 minute per day
- 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 How does a particle fall into a black hole if time dilation freezes it at the horizon?
- 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 How to write an abstract about time dilation, length contraction and the twin paradox
- 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 Do train and platform observers agree on simultaneity of events A and B?
- 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 Does time dilation follow from the relativity postulates?
- 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 Can we manipulate gravity after detecting gravitational waves?
- 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 Are light rays from a moving source necessarily in phase at both ends?
- 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 Does free fall age faster than floating at a Lagrange point?
- DiracPool
- · Replies 14 ·
Undergrad Why does light bend in an accelerating elevator but not at constant velocity?
- 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 Does Bob actually cross the event horizon if nobody observes it?
- _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 Can a third observer catch an infalling observer approaching a black hole horizon?
- _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 Difference between contravariant, covariant, and mixed tensors
- Wminus
- · Replies 5 ·
Undergrad Electric Field of Moving Charge: Effects on Distance
- jartsa
- · Replies 4 ·
Graduate Why does constant 1g acceleration give 24 years to cross 100,000 light-years?
- somethingswrong
- · Replies 7 ·
Graduate Can a metric be both stationary and rotating?
- Emilie.Jung
- · Replies 6 ·
Graduate Does larger mass mean faster aging in quantum and relativistic formalisms?
- DiracPool
- · Replies 1 ·
Graduate Why doesn't the parallel electric field component transform under Lorentz boost?
- 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 ·