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 What is the Purpose of the Geodesic Equation in General Relativity?
- space-time
- · Replies 9 ·
Graduate Tensor software for General Relativity
- Herb1989
- · Replies 17 ·
Graduate What is the significance of proper time in the Rain Frame of General Relativity?
- MattRob
- · Replies 8 ·
Graduate Derive Lorentz Transformations w/ Special Relativity
- Devin
- · Replies 1 ·
Graduate Properties of light in 2 moving reference frames
- pixel
- · Replies 29 ·
Graduate How does this proof demonstrate the concept of time dilation?
- Raman Choudhary
- · Replies 51 ·
Graduate Would an infinite universe has a finite diameter?
- newjerseyrunner
- · Replies 7 ·
Graduate Acceleration in a space time diagram
- DiracPool
- · Replies 7 ·
Graduate Why Do Gravitational Waves Occur?
- Mistake Not...
- · Replies 5 ·
Graduate Understanding Inertial Frame of Reference
- Gadhav
- · Replies 8 ·
Graduate The Equivalence of Mass and Energy
- Dadface
- · Replies 10 ·
Undergrad Black Hole Effects: What Would Happen?
- Mateo C.
- · Replies 3 ·
High School Gravity: Einstein vs. Newton View
- AF HUNZAI
- · Replies 2 ·
Graduate Gravity as a distorion of space-time
- EngWiPy
- · Replies 7 ·
High School Gravitational red shift and gravitational time dilation
- Ahmed Samra
- · Replies 14 ·
Graduate Acceleration vs Gravity: Understanding Einstein's Theory | PF Forum"
- Stephanus
- · Replies 13 ·
Graduate What is the boost hamiltonian in the Unruh effect?
- naima
- · Replies 4 ·
High School Travel at 3,000,001 m/s: Time Travel Explained
- frankin garcia
- · Replies 7 ·
Graduate Faster Than Light Travel: What Happens to Destination's Time?
- AlexDB9
- · Replies 19 ·
Graduate Unit of Acceleration: Calculating Speed with Velocity Addition Formula
- Stephanus
- · Replies 40 ·
Graduate Lorentz scalars - transformation of a scalar field
- "Don't panic!"
- · Replies 4 ·
Graduate Calculating relativistic effects of motion in solar system
- KenJackson
- · Replies 3 ·
Graduate General Relativity and continuum mechanics
- niahl
- · Replies 1 ·
Graduate Trying to clear up some confusion (clock synchronization)
- rede96
- · Replies 31 ·
Graduate Measuring Motion: What STAY Knows About TRAVEL
- Stephanus
- · Replies 2 ·
Graduate How does matter know how to move?
- PeterDonis
- · Replies 4 ·
High School Why does light travels in all directions?
- atuldpatil
- · Replies 1 ·
Graduate Studying Special Features in Metrics: Tensors & Differential Geom.
- space-time
- · Replies 3 ·
Graduate Weyl tensor for the Godel metric interpretation
- space-time
- · Replies 26 ·
Graduate Does a Photon Experience Time or Space During Travel?
- $H3K
- · Replies 32 ·
Graduate General Lorentz transformation, spatial vector components
- JD96
- · Replies 10 ·
Graduate Meaning of r in Schwarzchild coordinates
- PWiz
- · Replies 56 ·
Graduate Train Experiment Problem: Solve Derailment Mystery!
- Stephanus
- · Replies 4 ·
Graduate Traveling near the speed of light
- EngWiPy
- · Replies 69 ·
Graduate Describe the mechanism in GR causing *Space* expansion
- Glurth
- · Replies 22 ·
Graduate What Happens to Euler-Lagrange in Field Theories (ADM)?
- nonequilibrium
- · Replies 4 ·
Graduate Does the Hubble expansion of space have a preferred frame?
- Strilanc
- · Replies 13 ·
Graduate Understanding the Doppler Effect: Formula and Examples for Light Waves
- Stephanus
- · Replies 50 ·
Graduate Twins Paradox: Nature Cheats but B Gets Fooled
- Stephanus
- · Replies 6 ·
Graduate Doubt in Relativity of Simultaneity
- Rohit Solanki
- · Replies 46 ·
Graduate Torsion Scalar and Symmetries of Torsion Tensor
- nanuba
- · Replies 5 ·
High School Time Travel - Does It Create a New Dimension?
- TachyonRSC
- · Replies 6 ·
High School Smallest Schwarzschild Radius: Theory & Facts
- Shaw
- · Replies 12 ·
Graduate What Are the Differences Between Space-like and Time-like Events in Spacetime?
- Mikeal
- · Replies 8 ·
Graduate Why do diffeomorphic manifolds have physically identical properties?
- synoe
- · Replies 12 ·
Graduate Why does imaginary time behave like space?
- Ien Cleary
- · Replies 9 ·
Graduate Space-intervals, proper time, and proper distance
- Stephanus
- · Replies 5 ·
Graduate Measuring distance, speed and clock
- Stephanus
- · Replies 114 ·
Graduate Solving Exercise 13.7 MTW Using Light Signals
- TerryW
- · Replies 2 ·
Graduate Special Relativity Train Scenario
- kasha
- · Replies 4 ·
Graduate Measuring Speed with Doppler Effect: Questions and Challenges
- Stephanus
- · Replies 9 ·
Graduate Doppler Effect in Relativity: Mirror vs Lamp
- Stephanus
- · Replies 5 ·
Graduate Is There a Connection Between the Higgs Field and Relativity's Time Distortion?
- CaptainNorway
- · Replies 4 ·
Graduate Stationary/extremal L for timelike/null/spacelike geodesics
- bcrowell
- · Replies 42 ·
Graduate Simultaneity of Events: Understanding Observer Perspectives on Time
- Stephanus
- · Replies 18 ·
Graduate Consequences of space-/time-/light-like separations
- "Don't panic!"
- · Replies 4 ·
High School Speed of Light, Rapidity & Cantor's Infinities
- AlexDB9
- · Replies 4 ·
Graduate Generic Soliton Solution Periodicity: Restrictions & Examples
- Einj
- · Replies 2 ·
Graduate D'Alembert operator is commute covariant derivative?
- dhalilsim
- · Replies 3 ·
Graduate Time: Travelling Twins vs Black Hole Gravity
- Bryan S.
- · Replies 5 ·
Undergrad Particles with mass can't reach speed of light?
- SpiderET
- · Replies 18 ·
Graduate Coincidence of spacetime events & frame independence
- "Don't panic!"
- · Replies 41 ·
Graduate Normal Vector for Null Surfaces: How to Define and Fix it Completely?
- Kurret
- · Replies 4 ·
Graduate Proving Maxwell's Equations are Lorentz Invariant
- Bakali Thendo
- · Replies 5 ·
Graduate Speed of Light - Questions & Answers
- Stephanus
- · Replies 11 ·
Graduate Athlete Holding a 20m Pole in a 10m House
- Noctisdark
- · Replies 1 ·
Graduate How Does Time Dilation Affect Hawking Radiation Emission Near Black Holes?
- mivanit
- · Replies 4 ·
Graduate Measuring One-Way Speed of Light
- cooperm
- · Replies 48 ·
Graduate Spacetime Curvature: Does It Affect Objects?
- ORF
- · Replies 10 ·
Graduate Force Transform Applying: Question on a Specific Case
- dan_b_
- · Replies 1 ·
Graduate Let's Sort Out This Gravity Thing - c And All That
- Wallis
- · Replies 14 ·
Graduate Is All Motion Relative to Feynman's Path Integral?
- RyanH42
- · Replies 1 ·
Graduate Hamiltonian of General Relativity
- Physicist97
- · Replies 1 ·
Graduate New MINOS measurement of neutrinos speed through earth
- Enoy
- · Replies 12 ·
Graduate How to determine which clock runs slower in relativity?
- Max Johnson
- · Replies 26 ·
Undergrad Effects of Velocity Aberration?
- Bahmanyar
- · Replies 16 ·
Undergrad Speed of Light: Does Intensity & Frequency Affect It?
- ORF
- · Replies 14 ·
Graduate Is speed of light in vacuum an axiom in relativity?
- Premanand
- · Replies 11 ·
Graduate Special Relativity: Astronaut & Earth Light Speed Paradox
- Gary Boothe
- · Replies 6 ·
Graduate Metric Tensor of a line element
- Tony Stark
- · Replies 2 ·
Graduate Deriving the Definition of the Christoffel Symbols
- Physicist97
- · Replies 8 ·
Graduate Time Travel & Gravitational Time Dilation Function
- Invutil
- · Replies 3 ·
Graduate Is Poincaré's Space Dilemma the Key to Understanding Gravity?
- Wes Tausend
- · Replies 71 ·
Graduate Gravity Forces Us to Move: PF Forum
- Stephanus
- · Replies 7 ·
Graduate "Semi" Synchronous coordinates
- merav
- · Replies 1 ·
Graduate Is there measureable spacetime distortion from EM fields
- bwana
- · Replies 19 ·
Graduate How should I think about null geodesics?
- TheWonderer1
- · Replies 17 ·
Graduate Apparent horizon for the eternally accelerated observer
- naima
- · Replies 29 ·
Graduate Schutz page 294 (Deflection of light)
- Mr-R
- · Replies 9 ·
Graduate Electric Field in Gravitational Shockwave Geometry?
- Physics Monkey
- · Replies 0 ·
Undergrad What is the smallest practical unit of time?
- DarioC
- · Replies 2 ·
Graduate What is the difference between locality and causality?
- "Don't panic!"
- · Replies 6 ·
Graduate Understanding the Laws of Physics in SR: Questions & Answers
- Stephanus
- · Replies 12 ·
Graduate Write Torsion Tensor: Definition, Metric Tensor & Equation
- Physicist97
- · Replies 1 ·
Graduate Age of Universe for High Velocity Planet?
- icantevenn
- · Replies 7 ·
Undergrad Can Space Aircraft Reach Speed of Light in Vacuum?
- firin81
- · Replies 5 ·
Graduate Bending space and space time - what is the difference?
- Premanand
- · Replies 9 ·
Graduate What is the cause of time dilation in Special Relativity?
- giulio_hep
- · Replies 33 ·
Graduate What info do I get from these tensors?
- space-time
- · Replies 7 ·
Undergrad What exactly is a hypersurface?
- Tony Stark
- · Replies 5 ·