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 Solution to Time Dilation Problem
- atarr3
- · Replies 4 ·
Graduate Minkowski metric tensor computation
- Advent
- · Replies 6 ·
Graduate Why light speed is constant? (please read)
- Taturana
- · Replies 4 ·
Graduate Physical meaning of tensor fields
- espen180
- · Replies 4 ·
Graduate Does Schwarzschild Solution work inside a massive body?
- nickyrtr
- · Replies 4 ·
Graduate Simple Question-I hope-difference between SP and GP
- rasp
- · Replies 2 ·
Graduate When will the person at point B see train2 and why?
- dwspacetime
- · Replies 36 ·
Graduate GR weak field approx. problem with Dunsby's notes
- enomanus
- · Replies 3 ·
Graduate Confused with a certain aspect of special relativity
- aguycalledwil
- · Replies 2 ·
Graduate Relativistic Particle Collisions with Photons: Understanding Momentum and Energy
- soupdejour
- · Replies 9 ·
Graduate Is the Speed of Light a Constant?
- cary cato
- · Replies 26 ·
Graduate Speeding Black Hole: Mass & Density Explained
- Mentallic
- · Replies 14 ·
Graduate Relativistic paradox involving torsion.
- Cleonis
- · Replies 37 ·
Graduate Can an Observer Moving at Light Speed Measure Their Own Speed?
- hamsterman
- · Replies 6 ·
Graduate Fractal dimension of CMBR? Cluster distribution?
- nomadreid
- · Replies 2 ·
Is Time Travel Possible or Just Science Fiction?
- harshithelp
- · Replies 1 ·
Undergrad Redshifting Help - Understand the Doppler Effect of Light Waves
- Evolver
- · Replies 36 ·
Undergrad Proof of Relativity: Understandable without Physics/Maths
- jamesb-uk
- · Replies 13 ·
Example & Question: What Will Clock 3 Count?
- ghost11
- · Replies 4 ·
Graduate Pair of moving charges - confused
- Xezlec
- · Replies 13 ·
Graduate Understanding Time Dilation Equations: Special vs. General Relativity
- Zman
- · Replies 3 ·
Graduate Einstein's Theory: The Speed of Light and Time
- Zman
- · Replies 9 ·
Graduate Gravitational Force between Moving Bodies
- nickyrtr
- · Replies 4 ·
Graduate Special relativity and acceleration
- Zman
- · Replies 64 ·
Graduate Thinking bout the Special Theory of Relativity
- darkSun
- · Replies 4 ·
Graduate Researching an Alternative Theory to General Relativity
- wofsy
- · Replies 2 ·
Graduate Four-vectors and related concepts
- Dale
- · Replies 50 ·
Graduate Light Clock in a Gravity well ?
- Austin0
- · Replies 6 ·
Undergrad Constance of speed of light and refraction index question
- Taturana
- · Replies 4 ·
Graduate Time & Space Expansion: What Does It Mean?
- earamsey
- · Replies 3 ·
Graduate Can someone help a novice unbeliever?
- rasp
- · Replies 10 ·
Graduate Field Equations for f(R) Gravity: How to Integrate by Parts?
- ramparts
- · Replies 10 ·
Undergrad Beginner's Light Clock question
- flatearther
- · Replies 20 ·
Graduate Velocity translating into weight?
- BuddyPal
- · Replies 3 ·
Graduate Is absolute zero energy a meaningful concept in relativistic thermodynamics?
- Zman
- · Replies 7 ·
Graduate Length contraction falling down a hole.
- tickle_monste
- · Replies 4 ·
Undergrad Gravitational Attraction of Motionless Masses
- killshot
- · Replies 33 ·
Undergrad Space-Time Diagrams: Explaining & Setting Up
- w3390
- · Replies 8 ·
Graduate Running away from a beam of light
- dog6880
- · Replies 3 ·
Graduate The Greisen-Zatsepin-Kuzmin limit.
- inhahe
- · Replies 3 ·
Graduate Can Relativity be Applied to the Motion of Atoms and Intermolecular Forces?
- avocadogirl
- · Replies 3 ·
Graduate Minkowski in 5-D: what is the fifth?
- nomadreid
- · Replies 4 ·
Undergrad I finally figured out how to ask my question
- PaulRacer
- · Replies 39 ·
Graduate Minkowski vs deSitter: hyperbolic vs spherical?
- nomadreid
- · Replies 3 ·
Undergrad Who is in Motion: Two People, Constant Rate
- grounded
- · Replies 5 ·
Graduate Apparent Angular Size in Pinhole Camera Concept
- Austin0
- · Replies 2 ·
High School Why AND HOW could Time Slow DOWN?
- ConfusedRiou
- · Replies 11 ·
Graduate What does the travelling twin actually see?
- I_am_learning
- · Replies 8 ·
Graduate Time dilation in uniform field?
- dianaj
- · Replies 6 ·
Graduate Do Time Machines Account for the Movement of Planets and Galaxies?
- Mr Whippy
- · Replies 1 ·
Graduate Gravitomagnetic Waves: Properties & Sources
- espen180
- · Replies 6 ·
Undergrad Explaining the Constant Speed of Light in Special Relativity: A Beginner's Guide
- s1cko
- · Replies 6 ·
Graduate Are closed time like curves an inherent feature of rotating universe models?
- Galteeth
- · Replies 1 ·
Undergrad Understanding the Speed of Force: Instantaneous vs. Speed of Light
- PhDorBust
- · Replies 57 ·
Graduate Speed of Gravity? Questions about the Kopeikin Experiment of Sept 8 2002
- Pyro Ninja
- · Replies 24 ·
Graduate Looking for a specific unusual solution to Einstein's field equations
- Galteeth
- · Replies 3 ·
Graduate Negative time Minkowski metric
- tickle_monste
- · Replies 9 ·
Graduate Is Complex General Relativity the Key to Understanding Naked Singularities?
- Jim
- · Replies 3 ·
Graduate Is there any difference left between time and space left?
- I_am_learning
- · Replies 20 ·
Undergrad Red shift and the train thought experiment
- Pjpic
- · Replies 2 ·
Graduate What is happening when travelling towards light?
- RogiNicba
- · Replies 4 ·
Graduate Gravitational acceleration of relativistic objects.
- jwes44
- · Replies 4 ·
Graduate Is Vacuum Really Just Empty Spacetime?
- aaryan0077
- · Replies 13 ·
Graduate A thought Experiment on velocity greater than C
- I_am_learning
- · Replies 17 ·
Graduate Why Lowering Index on Components Affects Physical Variables
- enomanus
- · Replies 2 ·
Graduate Gravitational Potential Difference in Uniform Gravity Field
- vin300
- · Replies 61 ·
Graduate Modified Car and ditch paradox
- I_am_learning
- · Replies 3 ·
Undergrad Energy Storage & Mass Change: Is There a Link?
- I_am_learning
- · Replies 7 ·
Graduate How exactly to calculate the age difference in Twin paradox
- I_am_learning
- · Replies 13 ·
Graduate Black hole - contradiction to the Pauli exclusion principle?
- raul_l
- · Replies 9 ·
Graduate Does a photon experience time or is it affected only 'instantaneously'?
- That was mine
- · Replies 21 ·
Undergrad Objects at the Speed of Light question
- Shades
- · Replies 1 ·
Graduate Are Lorentz transforms unique?
- Naty1
- · Replies 13 ·
Graduate Falling down an infinitely deep well
- Somerschool
- · Replies 31 ·
Undergrad Introduction to SR: Inertial Frame of Reference Explained
- semc
- · Replies 3 ·
Challenge: superluminal average speed
- emcy
- · Replies 1 ·
Graduate The change spatial distance between 2 events
- kthouz
- · Replies 1 ·
Graduate Can a photon arrive before an observer traveling at the same speed?
- _PJ_
- · Replies 5 ·
Graduate One-Way Speed of Light: Experiment Basis & Aether Theories
- Saw
- · Replies 8 ·
Graduate Can Gravitons Escape a Black Hole's Gravitational Pull?
- NewImage
- · Replies 1 ·
Graduate Having velocity of light is like having infinite Velocity
- I_am_learning
- · Replies 10 ·
Graduate Is there a perfect correspondence between spacetime and reality?
- Force1
- · Replies 13 ·
Graduate Understanding Schwarzschild Geometry: Math & Physics Requirements
- 23571113
- · Replies 14 ·
Graduate Explaining Why Light Travels in Α'Β'Γ' in Relativity
- gian
- · Replies 5 ·
Graduate Explore Einstein's Theory of Relativity & Time Travel
- Newtonians
- · Replies 1 ·
Undergrad Just when I started to get things straught in my head.
- bm0p700f
- · Replies 1 ·
Undergrad No problem, glad I could help! :smile:
- Austin0
- · Replies 2 ·
Graduate Suppose relative v in S <> -v in S'
- jason12345
- · Replies 2 ·
Graduate Better understanding of causality
- mmoroz
- · Replies 13 ·
Graduate Comparing Einstein's 4D Space-Time to a Fluid: Is it Possible?
- delplace
- · Replies 3 ·
Graduate Information content of the metric, Riemannian and Ricci tensors
- LAncienne
- · Replies 6 ·
Graduate Does Particle Acceleration at the LHC Lead to an Increase in Mass?
- Force1
- · Replies 13 ·
Graduate Inverse Square Law + Special Relativity
- nassboy
- · Replies 5 ·
Graduate Unifying Relativity and Quantum Mechanics: The Challenge of Planck Units
- Andru10
- · Replies 7 ·
Graduate Stress-Energy Tensor from Lagrangian: Technical Question
- lonelyphysicist
- · Replies 25 ·
Graduate Does General Relativity Explain Tension in Space-Time?
- 2keyla
- · Replies 2 ·
Graduate Time travel when velocity> light speed
- shredder666
- · Replies 3 ·
Graduate Covariant Green's function for wave equation
- jason12345
- · Replies 3 ·
Graduate Lorentz or Poincare invariant?
- xiaomaclever
- · Replies 1 ·
Graduate A thought experiment doubt on General Relativity.
- yash25
- · Replies 3 ·