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 Relativity Matter & Vacuum Energy: Stress-Energy Tensor
- davidge
- · Replies 19 ·
High School Effect of Varying Distance on Radio Waves
- RAMII19780529
- · Replies 11 ·
Undergrad How Much Thrust is Needed to Hover Above a Black Hole?
- greswd
- · Replies 28 ·
Undergrad Special Relativity vs Newtonian Gravity: Understanding Their Compatibility
- Peter Martin
- · Replies 12 ·
Undergrad Relativity Paradox w/ Charged Spheres
- Xynon
- · Replies 6 ·
Undergrad EFE: Stress-Energy & Spacetime Curvature
- MattRob
- · Replies 6 ·
Undergrad Gravitational Waves Impact Earth's Orbit: Effects & Possibilities
- Abhinay Soanker
- · Replies 1 ·
High School WSU Shows Negative Mass Exists: Implications for Faster-Than-Light Travel?
- MattRob
- · Replies 2 ·
Undergrad Time Dilation Exp: Answers to Questions on A & B's Experiences
- Guilherme Mesquita
- · Replies 8 ·
Undergrad What Is the Lie Algebra of the Lorentz Group?
- Silviu
- · Replies 7 ·
High School Error in Einstein's Biography on Twin Paradox?
- Vampke
- · Replies 3 ·
High School How is that light from the sun takes about eight minutes to reach us
- sunney
- · Replies 39 ·
Undergrad Understanding Lorentz Transformation on Scalar Fields
- Silviu
- · Replies 9 ·
Graduate Asymptotically Anti de-Sitter Spacetimes
- spaghetti3451
- · Replies 2 ·
High School Why does light move at the speed it does
- RobC
- · Replies 66 ·
High School Time dilation of an orbiting ship
- Buckethead
- · Replies 28 ·
High School Triplet Paradox and Thought: The Mystery of Time Dilation
- Buckethead
- · Replies 19 ·
Undergrad Does Traveling Through a Wormhole Affect Time Dilation?
- sleeperservice
- · Replies 10 ·
Undergrad Proving the Wedge Product of 2 One-Forms is a 2-Form
- Silviu
- · Replies 3 ·
High School Does Light Speed Affect Mass of Surrounding Objects?
- hsdrop
- · Replies 5 ·
High School Space Dilation Interaction Between Two Masses
- MistySaa
- · Replies 20 ·
Undergrad Vector Notion in GR: A Tangent Space at p
- Silviu
- · Replies 10 ·
Undergrad Two Clocks Orbiting a Non-Rotating Planet: Questions Answered
- Bob Walance
- · Replies 5 ·
Undergrad Transform Bases for 4-Vectors in Ref. Frames
- Silviu
- · Replies 1 ·
High School Light & Space: Investigating the Unknown
- john-of-the-divine
- · Replies 102 ·
Undergrad Time: A Human Way of Measuring Change?
- davidge
- · Replies 7 ·
Undergrad Transformation of Matter into Black Holes
- greswd
- · Replies 21 ·
Undergrad Expansion of Plane of Projection: Terrel & Penrose
- Tahmeed
- · Replies 2 ·
Undergrad Acceleration towards c without a reference frame and changes
- infector
- · Replies 36 ·
Graduate Stress tensor in 3D Anti-De Sitter Space
- Pogags
- · Replies 9 ·
High School Does Distance Contraction Cause Time Dilation?
- Point Conception
- · Replies 15 ·
High School "The search for Relativity Violations"
- oquen
- · Replies 7 ·
High School Numerically Solving GRT Problems - Textbook/Article Recommendation
- exmarine
- · Replies 4 ·
High School Speed of Light & Space: Exceeding the "Universal Speed Limit
- Sullivan Stockwell
- · Replies 3 ·
Undergrad Derive Relativistic Beaming Equation: Learn Physics Easily
- Tahmeed
- · Replies 1 ·
Undergrad Clocks ON a rotating disk: What happens?
- JulianMau
- · Replies 6 ·
Undergrad Einstein Field Equations: PDEs or ODEs? - Thomas
- Thomas Moore
- · Replies 1 ·
High School Time Dilation Equation: Why is it to the Power -1/2? | AQA Exam Board
- AishaGirl
- · Replies 3 ·
Graduate Help to understand the derivation of the solution of this equation
- needved
- · Replies 1 ·
High School Relativity of Simultaneity: Proving Lightning Strikes A & B Same Time?
- Sullivan Stockwell
- · Replies 10 ·
Undergrad Object Moving Faster Than Light?
- swampwiz
- · Replies 4 ·
Graduate Acceleration of a Satellite in General Relativity
- Matter_Matters
- · Replies 4 ·
Undergrad Understand Tensors: Difference from Matrices
- Silviu
- · Replies 3 ·
Undergrad Lorentz Group Clarification: Boosts & g Matrix
- Silviu
- · Replies 1 ·
Undergrad Mass Curving Space-Time: Equations Explained
- Martin Sallberg
- · Replies 6 ·
High School Does Gravity Really Bend Space-Time or Just Create Confusion?
- Navid Eghbali9
- · Replies 3 ·
High School Transmitting information using gravitational waves
- Agliomby
- · Replies 66 ·
Undergrad Reference Frame Usage in General Relativity
- leo.
- · Replies 4 ·
Undergrad Carol Rovelli on the Notion of "Now" - Is He Right or Wrong?
- windy miller
- · Replies 11 ·
High School Is it that hard to do Relativity in accelerating frames?
- davidge
- · Replies 33 ·
High School Can Phonon Excitations in BECs Revolutionize Gravitational Wave Detection?
- Auto-Didact
- · Replies 3 ·
Undergrad Ignoring boundary term in the action
- davidge
- · Replies 32 ·
Undergrad The Electric field of a moving charge according to Purcell
- particlezoo
- · Replies 45 ·
Graduate How do magnetic fields curve spacetime?
- vibe3
- · Replies 9 ·
Graduate Signs in the definition of anti de Sitter spacetimes
- spaghetti3451
- · Replies 1 ·
Graduate Is spacetime orientation a convention?
- RockyMarciano
- · Replies 31 ·
Undergrad Is the Notation for Coordinate Transformation in Relativity Problematic?
- davidge
- · Replies 8 ·
Undergrad Solving Confusing Text in Wiki Friedmann Article
- Buzz Bloom
- · Replies 4 ·
Undergrad Explore Time Dilation in Minkowski Diagrams
- JohnnyGui
- · Replies 10 ·
High School Gravitational Waves as Transportation | Space Travel
- hsdrop
- · Replies 6 ·
Undergrad Can Warping Spacetime Create a "Warp Bubble" in GR?
- dykuma
- · Replies 1 ·
High School Spin & Frame of Reference: Detecting Motion in Space
- hsdrop
- · Replies 3 ·
Undergrad In gravitational assistance, does the mass matter?
- Rodrigo Olivera
- · Replies 10 ·
Graduate More on Parallel Transport: Existence & Uniqueness
- pervect
- · Replies 2 ·
Graduate Is Non-Zero Metric Determinant Enough for a Global Coordinate System?
- spaghetti3451
- · Replies 9 ·
Undergrad Gravitational time dilation near Earth
- DanMP
- · Replies 37 ·
Undergrad Relativistic velocity scenario
- calinvass
- · Replies 11 ·
High School Okun argument against relativistic mass - pedagogy
- houlahound
- · Replies 8 ·
Undergrad Prediction of GR for the gravitational pull
- ftr
- · Replies 11 ·
Undergrad Energy-Momentum Tensor: Validity in Relativity?
- davidge
- · Replies 8 ·
High School Gravity of hollow sphere vs. solid sphere of same mass
- Andy SV
- · Replies 5 ·
Undergrad Understanding parallel transfer
- joneall
- · Replies 36 ·
High School Can sound distort the fabric of space?
- John Clement Husain
- · Replies 31 ·
High School Metric tensor of a perfect fluid in its rest frame
- rolling stone
- · Replies 13 ·
Undergrad Multivariable Calculus Project: Spacetime/Black Holes
- pmrotman
- · Replies 6 ·
Undergrad Rindler coordinates in Minkowski spacetime
- spaghetti3451
- · Replies 4 ·
High School Is a "meter" observer dependent?
- ajay.05
- · Replies 12 ·
High School Confused About the Length of Time Between Ticks in Time Dilation
- Troodon Roar
- · Replies 21 ·
Graduate ADM mass of a spacetime and mass of the associated matter
- spaghetti3451
- · Replies 6 ·
Undergrad Math of Relativity: Topology Needed?
- davidge
- · Replies 19 ·
Undergrad Levi-Civita symbol in Minkowski Space
- illuminates
- · Replies 14 ·
High School Length Contraction & Time Dilation: Relative Velocity Impact?
- sqljunkey
- · Replies 6 ·
Graduate Defining the surface gravity of a black hole
- spaghetti3451
- · Replies 12 ·
Undergrad Relativistic Energy Equations: When to Use Each
- Kara386
- · Replies 5 ·
High School Negative Mass: Does it Impact Spacetime & Gravity?
- nitsuj
- · Replies 1 ·
High School Lorentz Transformation direction of motion
- sqljunkey
- · Replies 8 ·
Undergrad Why is time dilation not symmetric for satellites and Earth?
- Neutrinos02
- · Replies 15 ·
Undergrad What is the velocity of light in uniformly rotating frame?
- pallab
- · Replies 9 ·
High School Uniform motion and time dilation - real or perspective based
- Rob-NYC
- · Replies 30 ·
High School Trying to understand how FTL would violate causality....
- sawtooth500
- · Replies 145 ·
Graduate Questions about Einstein's 1916 GR Paper: Answers Needed
- darockymn
- · Replies 1 ·
Graduate Minimal coupling in general relativity
- spaghetti3451
- · Replies 3 ·
Graduate Diffeomorphism invariance and gauge invariance
- spaghetti3451
- · Replies 2 ·
High School Are All Four GW Detectors Currently Operational for Simultaneous Observing?
- RockyMarciano
- · Replies 3 ·
High School Does Time Dilation Occur in a Perfectly Circular Orbit at Near-Light Speed?
- Steeve Leaf
- · Replies 93 ·
Graduate Compute Induced Metric on Kerr Event Horizon
- Jonsson
- · Replies 5 ·
Undergrad Dark Matter vs Modified Gravity: Uncovering New Theories
- Fred Bett
- · Replies 4 ·
Graduate General relativity -- Proof of energy measured by observer
- Jonsson
- · Replies 8 ·
Graduate General relativity. What does momentum conservation mean?
- Jonsson
- · Replies 3 ·
Undergrad Why Open Manifolds are Relevant in Relativity
- davidge
- · Replies 17 ·