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 How to measure the one way speed of light.
- yuiop
- · Replies 63 ·
Graduate Is the Gauge Theory of Gravity Equivalent to Conservation Laws?
- jinbaw
- · Replies 3 ·
Graduate Wrong example of Covariant Vector
- dyb
- · Replies 4 ·
Graduate Hawking Radiation seems contrary to black hole dynamics
- jaketodd
- · Replies 5 ·
Graduate Foliation of Space Time Hypersurfaces
- Alfrez
- · Replies 20 ·
Graduate Twin paradox initial acceleration
- idea2000
- · Replies 46 ·
Graduate Is the Discussion on Gravitomagnetic Moments in London Misleading?
- jaiii
- · Replies 11 ·
Graduate How does beaming affect distance perception in special relativity?
- PAllen
- · Replies 27 ·
Undergrad Why did Michleson assumed that ether is moving ?
- Dark_knight90
- · Replies 9 ·
Graduate Understanding Charged Black Holes
- aashay
- · Replies 1 ·
Graduate How can two distant objects influence each other at a distance
- NeilWallace
- · Replies 2 ·
Graduate Relative Information and Time Paradox?
- Nano-Passion
- · Replies 22 ·
Graduate Traveling at c-(1 planck length/planck time), then accelerate. What happens?
- Meatbot
- · Replies 9 ·
Graduate Aberration of starlight due to
- HarryWertM
- · Replies 7 ·
Graduate Holographic principle and entropy mapping of a BH
- Pengwuino
- · Replies 4 ·
Graduate Speed of light in media other than vacuum
- Jimmy Snyder
- · Replies 19 ·
Graduate What is the physical interpretation of four-velocity in special relativity?
- snoopies622
- · Replies 58 ·
Graduate MMX and the earth's rotational sagnac
- chinglu1998
- · Replies 31 ·
Graduate Can different paths in spacetime have the same separation?
- Anamitra
- · Replies 154 ·
Graduate From Equivalnce Principle to General Relativity
- Goldbeetle
- · Replies 15 ·
Graduate BRS: Random Comments on Some Recent PF Threads
- Chris Hillman
- · Replies 94 ·
Undergrad WIKI and Time Dilation: The Possible Error in Relative Velocity
- chinglu1998
- · Replies 312 ·
Graduate Can the Symmetric Twin Paradox be Tested with Atomic Clocks?
- quadraphonics
- · Replies 17 ·
Graduate Magnetic or Electric Field or Electromagnetic Field?
- curiousphoton
- · Replies 26 ·
Graduate How to make two frames purely Galilean
- grav-universe
- · Replies 10 ·
Graduate Is time in our universe absolute?
- ailog
- · Replies 5 ·
Graduate Derivation of eq of motion of q in static E?
- jason12345
- · Replies 1 ·
Undergrad Interacting gravitational fields
- Drops of Fire
- · Replies 4 ·
Graduate Could the curvature of space in general relativity represent a 4th dimension?
- scope
- · Replies 13 ·
Undergrad Could you use contained light as a form of propulsion?
- Zade
- · Replies 39 ·
Graduate Time & Distance: Brian Greene's Theory Explored
- kwerk
- · Replies 1 ·
Graduate Space-Time Puzzle: Why Objects Can't Be in Two Places at Once
- Mueiz
- · Replies 6 ·
Undergrad Testing whether gravity bends light
- Drops of Fire
- · Replies 2 ·
Graduate Calculating Ship Acceleration with Gauss Gun Propulsion
- BitWiz
- · Replies 7 ·
Graduate Relativity & Gravity: Does Potential Energy Increase Mass?
- andypandy2020
- · Replies 10 ·
Graduate Bike Moving at 0.866c: Length, Time & Turns Explained
- psmitty
- · Replies 29 ·
Undergrad Equivalence Principle Explained - What is it?
- cragar
- · Replies 8 ·
Graduate Killing vectors on a 3D Euclidean space
- Magister
- · Replies 5 ·
High School Gravity: How do objects communicate?
- fez
- · Replies 11 ·
Graduate Solving Einstein Field Equations for Minkowski Space with CTC
- edgepflow
- · Replies 55 ·
Undergrad Faster-than-light newbie question
- Mephedr0ne
- · Replies 15 ·
Graduate Question about Brian Greene's book
- ghwellsjr
- · Replies 11 ·
Graduate Important and/or Interesting Spacetimes
- George Jones
- · Replies 16 ·
Graduate Question about black holes and gravity
- pitoko
- · Replies 3 ·
Graduate Relativistic inelastic collisions?
- wil3
- · Replies 29 ·
Graduate Does time dilation occur even in our everyday movements?
- Mayankv1994
- · Replies 5 ·
Undergrad Solving the Mystery of Graviton & Einstein's Accelerating Frame Model
- diligence
- · Replies 4 ·
Graduate Can a light beam stay trapped in a moving cart with ideal mirrors indefinitely?
- birulami
- · Replies 6 ·
Undergrad Hooke's Law & SR: Does k Change with Moving Springs?
- alvaros
- · Replies 23 ·
Graduate How does the String Theory Propeller behave as you approach the event horizon?
- dubsed
- · Replies 77 ·
Undergrad Gravity - a function of mass or of density?
- alpha_wolf
- · Replies 19 ·
Graduate Is There a Discrepancy in Distance Measurements?
- Hernik
- · Replies 14 ·
Graduate If Two Spaceships close at a speed of 1.4c ?
- Lightheavyw8t
- · Replies 35 ·
Graduate What is the relationship between 4-momentum and energy/momentum components?
- Rudipoo
- · Replies 5 ·
Graduate What is 'Curvature' of Spacetime
- cbd1
- · Replies 10 ·
Graduate Length and time comparisons in SR
- teodorakis
- · Replies 11 ·
Graduate BRS: Penrose-Carter Conformal Compactifcations of Spacetimes
- Chris Hillman
- · Replies 17 ·
Undergrad Link between Thermo and Special Rel?
- magic_claw93
- · Replies 30 ·
Undergrad Can Two Events Be Simultaneous in Multiple Reference Frames?
- itsthemac
- · Replies 11 ·
Graduate Metric tensor of a non-homogeneous universe
- andrewkirk
- · Replies 2 ·
Graduate Need simple introduction to homology / cohomology theory
- twofish-quant
- · Replies 10 ·
Graduate The feeling of time while traveling at the speed of light
- arkay
- · Replies 14 ·
Graduate Rotating vs. Stationary Mass Grav Effects?
- Spinoff
- · Replies 1 ·
Graduate How Does Gravity Affect Time and Distance in Space Travel?
- Mayankv1994
- · Replies 3 ·
Graduate Einstein-scalar field action -> Einstein-scalar field equations
- bookworm_vn
- · Replies 1 ·
Graduate Covariant derivative in spherical coordinate
- ismaili
- · Replies 9 ·
Graduate Length Contraction of Particles & Photons in Relativity
- pieterdb
- · Replies 2 ·
Graduate Gravitational waves due to acceleration
- ShayanJ
- · Replies 25 ·
Undergrad Can Gravitational Force Depend on Medium Like Electric Force Does?
- waqarrashid33
- · Replies 4 ·
Graduate Michelson–Morley experiment using objects with mass?
- guss
- · Replies 25 ·
Graduate What Happens to Light Between Two Colliding Black Holes?
- Iamu
- · Replies 10 ·
Graduate A study of the motion of a relativistic continuous medium
- J.F.
- · Replies 31 ·
Graduate Clarification on light speed experiment
- avarmaavarma
- · Replies 1 ·
Graduate Speed of a photon relative to another photon
- Flying Penguin
- · Replies 26 ·
Graduate Gravity time dialation and acceleration?
- Artlav
- · Replies 6 ·
Graduate Length contraction and time dilation equivelant?
- teodorakis
- · Replies 19 ·
Undergrad Does energy has gravitational force?
- abhiras
- · Replies 10 ·
Graduate Source of Gravitational Energy
- poverlord
- · Replies 4 ·
Graduate Lorentz tranformations and time slices
- LegendLength
- · Replies 4 ·
Graduate Time Dilation: Object & Lightbulb
- Myslius
- · Replies 1 ·
Graduate How Does Velocity Influence Energy Perception in Physics?
- Hernik
- · Replies 12 ·
Graduate What Happens to Time Dilation at a Black Hole's Event Horizon?
- JohnGano
- · Replies 2 ·
Graduate What General Relativity Project Should I Undertake to Enhance My Knowledge?
- aashay
- · Replies 4 ·
Graduate BRS: PKI Cryptosystems for SA/Ms: A Tutorial
- Chris Hillman
- · Replies 13 ·
Undergrad E=mc2 | If something has near zero mass, can it move?
- OSF
- · Replies 2 ·
Graduate What Is the Shortest Path on a Sphere If Not a Line of Latitude?
- DeDunc
- · Replies 21 ·
Graduate Why is There No Universal Space? - Henrik's Questions
- Hernik
- · Replies 4 ·
Graduate Gravity and Mass: What's the Need for a Graviton?
- Uncle Peter
- · Replies 3 ·
Graduate Einstein Equation with Cosmological Constant & Variable x^u
- alejandrito29
- · Replies 1 ·
Graduate Mermin's geometrical approach to SR
- bcrowell
- · Replies 12 ·
Graduate Confirming Einstein's Theory: Measurement of Bending of Light
- thetexan
- · Replies 12 ·
Graduate Is time travel possible and does it mean we have no free will?
- DavidGahan
- · Replies 14 ·
Graduate Can a New Type of Black Hole Exist Without a Singularity?
- yuiop
- · Replies 13 ·
Graduate Curved Space-time and Relative Velocity
- Anamitra
- · Replies 331 ·
Graduate Could an observer prove he is in a CTC?
- Passionflower
- · Replies 1 ·
Graduate What Does Locally Lorentz Really Mean in Spacetime Geometry?
- JDoolin
- · Replies 40 ·
What Are the Innovations in Timelike Congruences by Abreu and Visser?
- Chris Hillman
- · Replies 9 ·
Undergrad Relativity & Twins: What Happens When Two Move Away & Return?
- Tim Edilation
- · Replies 8 ·
Graduate General Question on Schwarzschild Metric
- WannabeNewton
- · Replies 8 ·