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 You can't exceed the speed of light
- pleasuremann
- · Replies 4 ·
Graduate Speed of Light Dilation: Does Observer See Slower Beam?
- Zman
- · Replies 4 ·
Graduate The vacuum Einstein equations and flat spacetime
- xiaomaclever
- · Replies 9 ·
Graduate Why can photons travel faster than c?
- Gamish
- · Replies 8 ·
Graduate Thought experiment concerning worldlines
- SWwright
- · Replies 22 ·
Graduate Is a Photon the Optimal Channel for Communication Between Inertial Observers?
- rwestafer
- · Replies 4 ·
Graduate Conservation law at high speeds
- stevebd1
- · Replies 1 ·
Graduate Is the Speed of Light Decreasing Due to a New Interpretation of Ether?
- vin300
- · Replies 4 ·
Graduate Can the Fabric of Space-Time Break Under Extreme Mass?
- XanPaul
- · Replies 3 ·
Graduate Why is the speed of light constant and independent from the observer?
- redphoton
- · Replies 4 ·
Graduate Why Expect Gravity Waves from Distant Cosmic Events?
- jnorman
- · Replies 5 ·
Graduate Twin Paradox: Accelerating Rocket Ship from Earth in 2100
- sludgethrower
- · Replies 9 ·
Graduate Creating black holes through relative motion
- A.I.
- · Replies 7 ·
Graduate Is the Speed of Light Absolute or Relative in Special Theory of Relativity?
- astro2cosmos
- · Replies 3 ·
Graduate Thought experiment: Orbiting bodies close to C
- Kalibr
- · Replies 8 ·
Undergrad Does Gravity "Lose" Pulling Power?
- Learnphysics
- · Replies 2 ·
Graduate The Fourier-Minkowski transform?
- jason12345
- · Replies 1 ·
Graduate Another 'photon's reference frame' thread
- tickle_monste
- · Replies 11 ·
Get a Translation Copy of Pauli's Legendary Relativity Article - Expert Tips
- Pollock
- · Replies 3 ·
Graduate Is a falling elevator a valid inertial frame?
- Austin0
- · Replies 9 ·
Graduate Why Do Spaceships Shorten When They Fly at the Speed of Light?
- menniandscience
- · Replies 2 ·
Graduate What is gauge in General Relativity?
- oldman
- · Replies 15 ·
Graduate What is a Simple Example of a Functional and Lagrangian in Gravity?
- CFDFEAGURU
- · Replies 31 ·
Graduate Understanding the Physical Meaning of Wigner Rotation
- elec-tric
- · Replies 4 ·
Undergrad Is it realy true that nothing can travel faster than light? if so, why?
- DRMOKADI
- · Replies 8 ·
Graduate General Relativity and Minkowski space question
- stolbein
- · Replies 5 ·
Graduate Structure of Minkowski Space
- Naty1
- · Replies 3 ·
Undergrad Floating in Space: Can Humans Create Their Own Orbits?
- smokering0
- · Replies 2 ·
Undergrad Mass and Speed in Special Relativity
- elec-tric
- · Replies 2 ·
Graduate Help understanding special relativity concepts please.
- earlofwessex
- · Replies 17 ·
Graduate Is the Pen on My Desk a Geodesic and Is My Room an Inertial Frame?
- wpoely
- · Replies 3 ·
Graduate Question on Space time geometry
- raknath
- · Replies 1 ·
Graduate Relativistic effects on apparent angular size
- nutgeb
- · Replies 45 ·
Graduate How Does Gravity Influence the Speed of Light in Space-Time?
- dream431ca
- · Replies 5 ·
Graduate Gravity: Effects of Curvature & Speed of Light
- tickle_monste
- · Replies 15 ·
Graduate Understanding Noether's Theorem: Field Theory on Minkowski Space
- Fredrik
- · Replies 11 ·
High School Understanding the Equation E=mc^2: Any Thoughts?
- rasp
- · Replies 13 ·
Undergrad How fast are we really moving?
- kenthedentman
- · Replies 1 ·
Graduate What happens when you enter a black hole
- GoodPR
- · Replies 40 ·
Graduate Still learning about special relativity, .
- Wattever
- · Replies 30 ·
High School Earth's Diameter Stick: A Spinning Spiral?
- PaulRacer
- · Replies 25 ·
Graduate Einstein’s return to ether, what future of relativity?
- vacuum-mech.
- · Replies 6 ·
Undergrad What is the difference between the equivalence principle and Newton's third law?
- vin300
- · Replies 1 ·
Graduate Is c invariant in Accelerating frames?
- Austin0
- · Replies 38 ·
Graduate Gravity/Curved Spacetimes effect on Time
- TheIsland24
- · Replies 12 ·
Graduate Do Moving Trains Affect Time Synchronization?
- GofG
- · Replies 5 ·
Undergrad Extended Coulomb's Law: Need Help w/ LaTeX
- MARTIN LOPEZ
- · Replies 11 ·
Graduate Where is My Understanding of Relativity Wrong in the Light Clock Example?
- archis
- · Replies 11 ·
High School What is the significance of squaring speed in E=mc²?
- Hallan
- · Replies 19 ·
Graduate Is there a simpler way to understand the Lorentz factor?
- rell
- · Replies 2 ·
Graduate Infinite mass = infinite gravity ?
- annatar
- · Replies 11 ·
Graduate What software do real physicists use for GR calculations?
- BWV
- · Replies 8 ·
Graduate Are My Thoughts on GR Body at Rest Correct?
- quZz
- · Replies 20 ·
Graduate Length contraction in a current carrying wire?
- maartenrvd
- · Replies 65 ·
Graduate Is Everything "Else" a Black Hole?
- aaryan0077
- · Replies 2 ·
Graduate Electrons' Angular Velocity in Atomic Structure: Examining the Same V?
- MARTIN LOPEZ
- · Replies 7 ·
Graduate Is light speed faster coming from a smaller star?
- PaulRacer
- · Replies 7 ·
Graduate Understanding the Impact of Michelson Morley Experiment on Modern Science
- fillindablank
- · Replies 8 ·
Graduate Can GR be formulated as background dependent?
- ensabah6
- · Replies 5 ·
Graduate Contravariant derivative tensor problem
- rafal_
- · Replies 4 ·
Graduate Photon Trajectory in Moving Laser Pointer
- bucher
- · Replies 17 ·
Graduate Some Burning Questions about Time Dilation
- Salbris
- · Replies 14 ·
Graduate Confused about Velocity Based Time Dilation
- Salbris
- · Replies 10 ·
Graduate Spacetime & Rotating Planet: Velocities Impact
- PaulRacer
- · Replies 4 ·
High School Is Time's Speed Just Wild Speculation?
- monty37
- · Replies 168 ·
Undergrad Simultaneity of events in 2 dimensions
- techdirect
- · Replies 1 ·
Graduate A paper I heard about last year about gravity.
- bm0p700f
- · Replies 3 ·
Graduate Two Spaceships, .90c - Why No Faster Than Light?
- Somedude99
- · Replies 38 ·
Graduate What distinguishes the interior and exterior Schwarzschild metrics in Maxima?
- BWV
- · Replies 5 ·
Graduate Gravitational Redshift for Photon around Kerr Black Hole
- Ruf30
- · Replies 7 ·
Undergrad General Relativity for Dummies
- haloshade
- · Replies 2 ·
Undergrad Confused by an example in Brian Greene's book and SR in general
- amk0713
- · Replies 13 ·
Graduate Is It Possible to Integrate General Relativity and Quantum Mechanics?
- GoodPR
- · Replies 6 ·
Graduate Is Faster-Than-Light Travel Possible Relative to Other Celestial Bodies?
- GoodPR
- · Replies 85 ·
Graduate Relative Object Speed Q: Observer Moving or Hula Hoop?
- PaulRacer
- · Replies 1 ·
Graduate F.O.R. and Acceleration/Deceleration Question
- TrashmanL
- · Replies 10 ·
Graduate My twin galaxy puzzle Please help
- Wangf
- · Replies 42 ·
Graduate Weak Equivalence Principle (WEP)
- dianaj
- · Replies 2 ·
Undergrad Special relativity fundamental question
- krindik
- · Replies 5 ·
Graduate Is the acceleration of mass A equal to mass B in Born rigid motion?
- Ironhead
- · Replies 3 ·
Graduate Is Action&Reaction Strictly Synchronous
- NERV
- · Replies 1 ·
Graduate Alpha Centauri to Earth: Apparent Speed > c?
- clamtrox
- · Replies 19 ·
Graduate Black Body in Motion Books: Find & Learn Relativity
- kthouz
- · Replies 3 ·
Graduate How is the twin paradox solved in the first model of the expanding universe?
- michelcolman
- · Replies 9 ·
Undergrad Light & Time Travel: Can the Light See Us Stopped?
- Alladin
- · Replies 2 ·
Graduate Gravitational Effects on Atomic Clocks and Other Forces
- jreelawg
- · Replies 9 ·
Graduate Equivalence Principal, Acceleration, Curved Space
- Widdekind
- · Replies 4 ·
Graduate Gravitational collapse to form a black hole
- Finbar
- · Replies 6 ·
Undergrad When adding up velocities, is it possible to produce 1+1=1?
- Duchovnik
- · Replies 3 ·
Graduate What Do Observers See in the Special Relativity Clock Paradox?
- SpaceExplorer
- · Replies 2 ·
Graduate What are the effects of traveling at light speed on aging and time perception?
- PaulRacer
- · Replies 29 ·
Graduate Does Time Exist at Absolute Rest or Light Speed?
- LawrenceM
- · Replies 4 ·
Graduate Why should the action be Lorentz invariant?
- pellman
- · Replies 2 ·
Graduate C plus and ACAUSALITY in accelerating systems
- Austin0
- · Replies 5 ·
Undergrad Is this explanation of E=mc^2 correct or incorrect and why?
- jason392
- · Replies 1 ·
Graduate Mathematical Question: Validity of Equations for Special Relativity
- eekf
- · Replies 14 ·
Undergrad Can I really not tell if I am in motion?
- Nanyang
- · Replies 1 ·
Graduate How does velocity affect the rate of time?
- Salbris
- · Replies 12 ·
Graduate Help Understand SR - Steve's Questions
- stovepipe
- · Replies 10 ·
Undergrad How Does Distance from Earth Affect Our Perception of Time?
- Attheotherend
- · Replies 4 ·