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 Accelerating into a black hole?
- spinstate
- · Replies 7 ·
Undergrad Is the Equation for Relativistic Two-Body Decay Correct?
- EquationOfMotion
- · Replies 1 ·
Graduate Venus during the day, a test of relativity?
- Vast
- · Replies 8 ·
Graduate Does Komar Mass Include the Energy of Gravitational Field?
- wLw
- · Replies 38 ·
High School Black Hole Evaporation: What's Left?
- nateHI
- · Replies 1 ·
Undergrad Deriving E&B Fields from Plane Wave 4-Potential
- SiennaTheGr8
- · Replies 5 ·
Graduate Uniformity of universe expansion
- nomadreid
- · Replies 3 ·
Undergrad Compute Physical Coordinates of an Event in a Curved Spacetime
- TheNewBie2019
- · Replies 1 ·
Graduate Could a Fixed Point on a Strong Fishing Line Influence Space-Time?
- oldman
- · Replies 1 ·
Graduate Can Wormholes Accurately Determine Points in Space and Time?
- dismas
- · Replies 1 ·
Undergrad Vaidya Metrics: Outgoing M(u) Conditions & Phys. Situations
- Tomas Vencl
- · Replies 3 ·
Graduate Einstein-Strauss solution with one or two bubbles
- smallphi
- · Replies 1 ·
Graduate Effect of gravitational potential on energy
- Xeinstein
- · Replies 1 ·
Graduate Frequency shift and relative velocity
- Saw
- · Replies 2 ·
Graduate What does the image of the black hole say about general relativity?
- haael
- · Replies 1 ·
Graduate Causality & Hyperspace: FTL Communication Paradoxes
- Ich
- · Replies 1 ·
High School What does the constancy of speed of light mean?
- thaiqi
- · Replies 32 ·
Graduate Is Empty Spacetime Observable or Merely Theoretical?
- wolram
- · Replies 1 ·
Graduate Bigbang Bigcrunch Singular event?
- Romulus100
- · Replies 1 ·
Graduate Local coordinates, physical coordinates
- mrandersdk
- · Replies 1 ·
Graduate Mach's principle and variable speed of light.
- CarlB
- · Replies 1 ·
Graduate Length contraction and wave length transformation
- bernhard.rothenstein
- · Replies 1 ·
Undergrad Does this contradict or require GR?
- Buckethead
- · Replies 15 ·
Graduate About the validity of Einstein’s 1905 Principle of Relativity
- RVHG(R.Valls)
- · Replies 1 ·
Graduate Help with Relativistic Collision
- SamRoss
- · Replies 1 ·
Undergrad E on q independent of v - confusing?
- jason12345
- · Replies 1 ·
Graduate Quantum gravitational uncertainty
- exponent137
- · Replies 1 ·
Graduate Gamma Ray Bursts and Gravitational Radiation
- Desh627
- · Replies 1 ·
Graduate Redshift/Blueshift of Gravity Waves Around a Black Hole
- nottay
- · Replies 1 ·
Graduate Wormhole Travel: 10 LY Away in an Instant?
- billbray
- · Replies 1 ·
Graduate Investigating Belinfante Tensor: Relation to Conserved Current
- kent davidge
- · Replies 1 ·
Graduate Is Spacetime the Cause of Inertia?
- PhizzicsPhan
- · Replies 1 ·
Graduate On when does Hawking radiation begin?
- PAllen
- · Replies 1 ·
Graduate Is the perception of backwards time possible in relativity during deceleration?
- Ookke
- · Replies 1 ·
Undergrad Easy ways to explain special & general relativity
- taybot
- · Replies 1 ·
Graduate Discrete Relativity: Measuring Planck Units
- PFanalog57
- · Replies 1 ·
Graduate What Does Distinguished Really Mean in Technical and Legal Contexts?
- LAncienne
- · Replies 1 ·
Graduate How does a large mass warp space?
- 81+
- · Replies 1 ·
Graduate Time Travel Question (from A Briefer History of Time )
- Legendre
- · Replies 1 ·
Graduate Relativistic mass affect weight of an object?
- aexyl93
- · Replies 1 ·
Graduate Sticky for beginners to draw a spacetime diagram
- granpa
- · Replies 1 ·
Graduate Can Unknown Physics Explain the Singularity of a Black Hole?
- kurious
- · Replies 1 ·
Graduate Rest Frame of a Photon - FAQ by Forum Members
- D H
- · Replies 1 ·
High School Did Einstein Disagree With Black Holes?
- nitsuj
- · Replies 6 ·
Graduate What Is the Best Way to Teach Special Relativity?
- silagadze
- · Replies 1 ·
Undergrad Falling Into a Black Hole: Time Dilation & Hawking Radiation
- Aidyan
- · Replies 9 ·
Graduate Resolving the Black Hole Paradox: A Perspective from Different Reference Frames
- Ray Eston Smith Jr
- · Replies 1 ·
Graduate Debunking "c-decay": History & Facts
- Phobos
- · Replies 1 ·
Graduate Gravitational waves, electromagntic waves and charged particles
- graupner1000
- · Replies 1 ·
Graduate Throwing Balls on a Large Planet: GR Approximation Problem
- Ibix
- · Replies 8 ·
Undergrad Photon Patterns in Space: Could They Exist?
- TerranIV
- · Replies 11 ·
Undergrad Particles w/ 0 Inertial Mass Traveling Faster than Light?
- TerranIV
- · Replies 9 ·
Undergrad Looking for more accurate energy-momentum transformations for photons
- tade
- · Replies 35 ·
High School Do we understand what the Universe looks like for a photon?
- fbs7
- · Replies 20 ·
Undergrad Reading suggestions about the "nature of time"
- Lapidus
- · Replies 27 ·
Undergrad Transverse inertial motion of rockets in acceleration
- sweet springs
- · Replies 18 ·
Graduate Describing a Rotating Vector with Changing Angular-Velocity
- Jianbing_Shao
- · Replies 4 ·
High School Is the Twin Paradox Really a Paradox?
- Papo1111
- · Replies 61 ·
Undergrad Gravitational Waves: Questions on Mass & Escape Velocity
- .Scott
- · Replies 5 ·
High School Is mass the only store of energy
- Daniel Wareham
- · Replies 9 ·
Undergrad Time Dilation Effects - Understand without Clocks
- mrSpring
- · Replies 6 ·
Undergrad Uniqueness Theorems in Non-Flat Spacetime
- Max Green
- · Replies 3 ·
Graduate NASA Mission to Alpha Centauri: SR & Relativistic Effects
- LAP3141
- · Replies 3 ·
Graduate Deriving Relativistic Boltzmann Equation | Theory Physics MSc Thesis
- Ekphy
- · Replies 3 ·
High School Is the Universe Moving in Circular Patterns Within the 4th Dimension?
- Vibhu
- · Replies 2 ·
Graduate Mass of Hadrons: Verifying Special Relativity
- CaptainMarvel1899
- · Replies 8 ·
Undergrad Is the Delta Function a Scalar?
- kent davidge
- · Replies 1 ·
Undergrad Fastest Cause & Effect: Electric Field & Magnetic Field
- Jaysal
- · Replies 7 ·
Undergrad Conserved Stress-Energy in Gravitational Theories
- gerald V
- · Replies 6 ·
Undergrad Determining c from Maxwell's Equations
- Buckethead
- · Replies 31 ·
High School Magnetic field and moving charge special relativity
- Herbert11
- · Replies 7 ·
Undergrad Invariance of Action: Lagrangian Transformation
- kent davidge
- · Replies 3 ·
Graduate Equations for computing null geodesics in Schwarzschild spacetime
- LightAintSoFast
- · Replies 8 ·
High School Coulomb force over Rindler horizon
- jartsa
- · Replies 31 ·
High School Time dilation and Einstein's theorem
- worlov
- · Replies 58 ·
Undergrad Gravity Waves or Gravity Delay: Which Concept Explains Our Cosmic Stretching?
- CHOP
- · Replies 4 ·
High School Questions on Covariance and Contravariance of Vectors
- geordief
- · Replies 10 ·
Undergrad Gravitational Waves & Matter: Causes, Effects & Thresholds
- PeterB
- · Replies 3 ·
Undergrad Free Particles & Geodesics: Do They Go Hand-in-Hand?
- kent davidge
- · Replies 20 ·
High School How much time dilation is there as time passes?
- Snickers
- · Replies 36 ·
Insights Fermi-Walker Transport in Kerr Spacetime - Comments
- PeterDonis
- · Replies 2 ·
Undergrad Space-time curvature and the fabric of space
- nikkor180
- · Replies 13 ·
Undergrad Confusion about index notation and operations of GR
- Put1demerde
- · Replies 8 ·
High School Propagation of changes in a gravitational field
- Lord Crc
- · Replies 31 ·
Undergrad Black hole orbital mechanics questions
- alexchamp29
- · Replies 16 ·
Graduate Find the Tetrad for Kerr Metric: Step-by-Step Guide
- Zuhaa Naz
- · Replies 26 ·
Graduate Penrose diagram of black hole with a changing event horizon
- Sonderval
- · Replies 3 ·
Undergrad Gravitational field versus acceleration
- Jaysal
- · Replies 20 ·
Undergrad Relativistic form of the displacement current using the Biot-Savart Law
- tade
- · Replies 26 ·
High School Can Atomic Clocks Yield the Same Time Dilation Equation as Light Clocks?
- benorin
- · Replies 38 ·
Graduate Quantum amplitude for a particle falling into a black hole
- leo.
- · Replies 4 ·
High School What happens to the matter inside a black hole?
- KurtLudwig
- · Replies 9 ·
Undergrad Why do particles around us have finite momenta?
- TGlad
- · Replies 21 ·
Undergrad Can this event vary relatively?
- Hawkingo
- · Replies 18 ·
Undergrad Maxwell's Equations in Different Lorentz Frames: Are They Equivalent?
- kent davidge
- · Replies 16 ·
Undergrad General Relativity and light deflection
- Mickey Farley
- · Replies 4 ·
Undergrad Solving for Gravity Without Gravitational Constant - Little g vs Big G
- Deleted member 658453
- · Replies 17 ·
Graduate How Do You Calculate the D'Alembert Operator in a Given Metric for GR?
- ChrisJ
- · Replies 9 ·
High School Special Relativity: Time Measurements on Two Systems - Mike's Question
- xcom2112
- · Replies 6 ·
Insights Fermi-Walker Transport in Schwarzschild Spacetime - Comments
- PeterDonis
- · Replies 0 ·