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 Does the Twin Paradox Involve More Than Just Velocity?
- rreaume
- · Replies 8 ·
Graduate FTL with Einstein synchronization and causality issues
- kamenjar
- · Replies 27 ·
Graduate Orbital decay of PSR B1913+16 and the use of averaged dE/dt vs. instantaneous dE/dt
- Alexrey
- · Replies 7 ·
Graduate Is it true that in general relativity length does not exist?
- 7561
- · Replies 18 ·
Graduate Re-parametrization of Geodesics: Can You Confirm?
- bloby
- · Replies 2 ·
Graduate [SR] - Photonic Reference Frame
- RagingCain
- · Replies 8 ·
Graduate Transformation of an acceleration vector under a basis change
- Mentz114
- · Replies 47 ·
Graduate Einstein's Train Example: Speed of Light and Simultaneity
- ahmeeeeeeeeee
- · Replies 3 ·
Graduate E=mc2 is more complicated that I originally thought
- kjamha
- · Replies 27 ·
Graduate Lorentz Transformation Rapidity
- parsikoo
- · Replies 5 ·
Undergrad Free Online Resources for learning special and general relativity
- bgq
- · Replies 8 ·
Graduate Theory of graviation for lazy people
- harrylin
- · Replies 4 ·
Undergrad Why do I see two different definitions of electron magnetic moment?
- Antuanne
- · Replies 1 ·
Graduate Physical Meaning of r in BL Coordinates
- marschmellow
- · Replies 2 ·
Undergrad Which Equation Correctly Represents Relativistic Kinetic Energy?
- Antuanne
- · Replies 3 ·
Graduate Can the Speed of Light Be Exceeded by Manipulating Distance and Velocity?
- Edward Solomo
- · Replies 8 ·
Graduate Time dilation and Minkowski diagram
- 71GA
- · Replies 34 ·
Graduate Gravitational field caused by a charged particle
- ngkamsengpeter
- · Replies 7 ·
High School Speed of light enough to escape black holes ?
- silvercrow
- · Replies 45 ·
High School Doppler effect explanation of E=mc²
- leolee5633
- · Replies 4 ·
Undergrad Why can't you reach the speed of light?
- Antuanne
- · Replies 8 ·
Graduate Speed of light and time travel
- morfin56
- · Replies 30 ·
Undergrad The Eotvos Experiment: Discussion and Analysis
- thecoop
- · Replies 2 ·
Graduate Lemaitre Coordinates: Plotting Freefall & Light Paths
- yuiop
- · Replies 2 ·
Graduate Is asymmetric time dilation in twin paradox possible in SR?
- arindamsinha
- · Replies 32 ·
Graduate Will object with speed near the speed of light become black holes?
- propelera
- · Replies 16 ·
Graduate Covariant and contravariant vectors, coordinate-free systems, and parallel transport
- shounakbhatta
- · Replies 14 ·
Undergrad Why doesn't light move at an infinite speed?
- Astro_Will
- · Replies 52 ·
Graduate Time measured by free-fall observer near object?
- johne1618
- · Replies 7 ·
Graduate Fresnel equations and special relativity
- dllahr
- · Replies 25 ·
Graduate Does space actually contract for a fast-moving spacecraft?
- peterspencers
- · Replies 26 ·
Graduate Is existing relativity 100% correct, or are we waiting for something better?
- arindamsinha
- · Replies 15 ·
Graduate Equation for path of light in GR
- dsoodak
- · Replies 9 ·
Graduate Why is N=4 SYM's Lagrangian Unique?
- EuphoGuy
- · Replies 1 ·
Graduate How close could a tachyon get to a black hole and still escape?
- jwatts
- · Replies 11 ·
Graduate Gravity offsetting Velocity's Time Dialation? Trouble Understanding
- Eng1n33r
- · Replies 7 ·
Graduate Can Light Orbit a Black Hole Inside the Event Horizon?
- Hope Lansing
- · Replies 16 ·
Graduate GR time dilation from SR by EP
- Austin0
- · Replies 7 ·
Graduate Is Relativistic Mass an Outdated Concept?
- greswd
- · Replies 2 ·
Graduate Time Dilation: Travel from Solar System to Proxima Centauri
- Golf7
- · Replies 3 ·
Graduate Do photons in a medium have zero momentum?
- greswd
- · Replies 2 ·
Graduate Space-Time Invariance, Weird Names and Some Questions
- RadiantL
- · Replies 3 ·
Where can I find Einstein's original papers online?
- Mgarrettny
- · Replies 6 ·
Graduate Something fishy about special relativity?
- Neandethal00
- · Replies 15 ·
Graduate Understanding Complex Eigenvalues in General Relativity
- shounakbhatta
- · Replies 2 ·
Graduate Is time a fundamental feature of reality or just a way of ordering events?
- levonnikox
- · Replies 19 ·
Graduate Deriving the relativistic collision velocity formula
- center o bass
- · Replies 15 ·
Graduate Does Relativistic Physics Challenge the Traditional Escape Velocity Formula?
- MLeinenweber
- · Replies 18 ·
Graduate How does boosting a current loop affect current in each direction?
- pervect
- · Replies 22 ·
Graduate Could traveling at high speed pay off financially back on Earth?
- drbanner
- · Replies 26 ·
Undergrad Why can't relative velocity exceed the speed of light?
- Cyclopsicle
- · Replies 16 ·
Graduate Relativistic electrical varialbes
- bgq
- · Replies 2 ·
Graduate Do gravity waves imply repulsive force component?
- grokkin
- · Replies 7 ·
Undergrad Is the Temperature of Light Relative?
- Stu21
- · Replies 18 ·
Graduate If it works in 3D, then it works in 4D
- friend
- · Replies 9 ·
Undergrad Why is the spaceship twin younger if both see each other's clocks slow?
- Rishavutkarsh
- · Replies 289 ·
Graduate Do Einstein's Field Equations Show Up Anywhere Else?
- cuallito
- · Replies 11 ·
Graduate How Does a Diagonal Metric Affect the Symmetry and Tensor Equations in Space?
- Funzies
- · Replies 3 ·
Graduate Form of Kruskal-Szekeres Completion
- Airsteve0
- · Replies 2 ·
Graduate Do wormholes require higher dimensions?
- friend
- · Replies 6 ·
High School How Fast Must Bill Gates Travel to Earn Minimum Wage?
- AJKing
- · Replies 3 ·
Graduate Energy- momentum tensor of photon fluid/EM- field
- Lurian
- · Replies 2 ·
Graduate Why Photon Mass is Zero: Proving it with Relativity Theory
- umair20
- · Replies 9 ·
Undergrad Why was the concept of aether discarded in the study of light and motion?
- Adrian07
- · Replies 62 ·
Graduate Interior metrics and circular orbits
- FunkyDwarf
- · Replies 16 ·
Graduate Conformal transformation between two 2-D spacetimes with different curvatures
- honeytrap
- · Replies 11 ·
Graduate U and V in the Kruskal Diagram
- Airsteve0
- · Replies 2 ·
Graduate Is frame dragging the same as torsion?
- friend
- · Replies 11 ·
Graduate Do Lorentz boosts and rotations commute in the Lorentz group?
- parsikoo
- · Replies 10 ·
Graduate Two Observers with clocks in space moving at vrel relative to each other
- Jeronimus
- · Replies 20 ·
Graduate Kenneth Krane's Modern Physics muon example (SR)
- Rear Naked
- · Replies 9 ·
Graduate Energy density in Stress Energy Tensor
- shounakbhatta
- · Replies 2 ·
Graduate Why does Relativity not apply in the quantum world ?
- lindloda
- · Replies 9 ·
Graduate Solving C. Bertulani's Ch.1 Problem 6 - Proton Energy > 5.6 GeV
- Imanbk
- · Replies 18 ·
Graduate Need recommendation on alternative thoery/reading
- kamenjar
- · Replies 16 ·
High School Settle a bet on time and distance.
- hazzatori
- · Replies 3 ·
Graduate Proving Non-Absorbable Constant with Δξgμν
- Morgoth
- · Replies 1 ·
Graduate Does Relativistic Mass Influence Gravity and Energy in High-Velocity Objects?
- Ezio3.1415
- · Replies 32 ·
Graduate Does frame dragging velocity stay constant with distance from a black hole?
- mysearch
- · Replies 8 ·
Graduate Weak-Field Limit of Gravitational Radiation and the Equivalence Principle?
- Alexrey
- · Replies 4 ·
Graduate Light cone determination from metric and Van Stockum dust frame fields
- marschmellow
- · Replies 17 ·
Graduate THE RETURN of two opposite travelling photons
- Blogical
- · Replies 39 ·
Graduate Questions relating to time dilation
- salzrah
- · Replies 99 ·
Good video lectures on physics
- shivaniits
- · Replies 35 ·
Graduate Status of the block universe in the field of physics
- levytate
- · Replies 8 ·
Graduate Does time dilation only affect matter that has mass?
- Milfeulle
- · Replies 3 ·
Graduate Is light speed or velocity constant, and what experiments verify it?
- bgq
- · Replies 7 ·
Graduate Can one diagonalize the Kerr metric?
- arroy_0205
- · Replies 5 ·
Graduate Covariant derivative - is this a typo ?
- zn5252
- · Replies 8 ·
Graduate Understanding Results from a Relativistic Star Ship Calculator
- danielgoodman
- · Replies 2 ·
High School Space-time Concept by Einstein
- F1225
- · Replies 10 ·
Undergrad Pushing solid objects and longitudinal waves
- robertbram
- · Replies 13 ·
Graduate Natural Unit Confusion: M=1/L or M=T/L^2?
- LAHLH
- · Replies 6 ·
Graduate Galilean relativity vs special relativity
- TrickyDicky
- · Replies 39 ·
Graduate About Relativistic Mass-Energy Equivalence
- SMarioKingdom
- · Replies 1 ·
Graduate Exact GR solutions for velocity time dilation and kinematic redshift
- Synctime
- · Replies 9 ·
Graduate Basic questions about General Relativity
- calvinjhfeng
- · Replies 4 ·
Graduate Is There a Minimum Energy Reference Frame?
- JustinRyan
- · Replies 5 ·
Graduate Verifying a Kerr-Newman metric expansion
- Orion1
- · Replies 2 ·
Graduate What Is Time Dilation and How Does It Affect Travel at the Speed of Light?
- Waxb18
- · Replies 11 ·