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 Near-C Speed Spinning Top: Immovable Object?
- nitsuj
- · Replies 10 ·
Graduate Relativity Musings: Gravitation, Acceleration & Inertial Ref Frames
- DiracPool
- · Replies 1 ·
Graduate Inverse curvature of space-time
- ScientificMind
- · Replies 21 ·
Undergrad Math & Relativity: Understand Einstein's Theories
- CosmicCube
- · Replies 5 ·
Graduate Progression of Time & Entropy: Is the Pass. Slowing?
- Paul Howard A
- · Replies 7 ·
Graduate Lie Algebra of Lorentz Group: Weird Notation?
- Theage
- · Replies 3 ·
Graduate Photon Rest Mass: Understand 4 Momentum & Mass
- smk222
- · Replies 1 ·
Graduate General Theory of Relativity Question
- DREAMWALKER
- · Replies 30 ·
Graduate Momentum to Energy Conversion: Learn How it is Done
- goodphy
- · Replies 4 ·
Graduate Ball Thrown Up Follows Curvature of Spacetime
- rajeshmarndi
- · Replies 4 ·
Graduate Hawking Radiation from All Gravitational Sources?
- bcrelling
- · Replies 3 ·
Undergrad Length Contraction in Special Relativity
- ubergewehr273
- · Replies 11 ·
Graduate Rest Energy of Electron: E=m(0)*c^2=0.511MeV
- gentsagree
- · Replies 2 ·
Graduate Do atmospheric muons accelerate?
- nitsuj
- · Replies 34 ·
Graduate Why must the event horizon be a null surface?
- center o bass
- · Replies 1 ·
Graduate High Energy Electron Greetings: Creation of Extra Particles?
- Mizies
- · Replies 3 ·
Graduate Relativistic kinetic energy derivation (from Work expended)
- freddie_mclair
- · Replies 3 ·
Graduate Understanding Light's Motion in a Moving Clock
- member 529879
- · Replies 13 ·
Undergrad Time dilation - effect on clock or 'time' itself?
- henry555
- · Replies 10 ·
Graduate Twin Paradox: Will Car A Age Slower?
- bcrelling
- · Replies 4 ·
Graduate Null geodesics of the FRW metric
- center o bass
- · Replies 2 ·
Graduate Does the weight of a relativistic mass change when measured on a moving scale?
- MiladP
- · Replies 54 ·
Graduate Black Hole Penrose Process: Understanding Negative Energy Condition
- binbagsss
- · Replies 3 ·
Graduate Pound-Rebka Experiment: Accuracy & Data Availability
- exmarine
- · Replies 8 ·
Graduate Observable universe as a black hole
- bcrelling
- · Replies 6 ·
Undergrad EMF Generated When Magnet Moves Linearly Across Its Field
- Harsha Kumar
- · Replies 3 ·
Graduate Is Classical Mechanics Wrong? A Horrible Proof of Its Inadequacy
- Albeaver
- · Replies 12 ·
Graduate What Happens to Acceleration and Spatial Distances Near the Speed of Light?
- jerromyjon
- · Replies 37 ·
Graduate Static + Hypersurface Orthogonality
- latentcorpse
- · Replies 7 ·
Graduate Photon pressure within a black hole
- bcrelling
- · Replies 5 ·
Graduate Where Does the Traveling Twin Lose Time in the Twin Paradox?
- CKH
- · Replies 67 ·
Graduate Relativity of Simultaneity and the Perception of Time in Motion
- member 529879
- · Replies 2 ·
Graduate Gravitational Field of Moving, Rotating Globe: A Question
- James_Harford
- · Replies 15 ·
Graduate Red Shift Q: Where Does Lost Energy Go?
- Gary Boothe
- · Replies 8 ·
Undergrad Differences Between Doppler Effect Formulas: u & f´
- camel-man
- · Replies 2 ·
Graduate Does Relativity of Simultaneity Imply Movement Before Action?
- member 529879
- · Replies 2 ·
Graduate Light Experiments at IAP, Darmstadt: Einstein's Speculations
- ConformalGrpOp
- · Replies 2 ·
Graduate Gravity: Not a Force but Curvature of Spacetime?
- rajeshmarndi
- · Replies 19 ·
Graduate How Does Time Dilation and Length Contraction Work in Special Relativity?
- BrotherTheo
- · Replies 6 ·
View Einstein's Papers for Free on Princeton University Website
- Histspec
- · Replies 2 ·
Graduate Understanding the FRW Metric: Exploring Physical and Comoving Coordinates
- Einj
- · Replies 14 ·
Graduate Extended Extreme Multiple Reissner Nordstrom Black holes
- keithdow
- · Replies 2 ·
Graduate Light Cone Coordinates Explained
- JonnyMaddox
- · Replies 1 ·
Graduate How to explain the curvature of space-time to students
- supernova88
- · Replies 5 ·
Graduate Analysis of the physics in Interstellar
- phi1123
- · Replies 4 ·
Graduate Does gravity field really exist?
- ABW
- · Replies 35 ·
Graduate Understanding Microwaves: Their Function and Effects on Food in Space
- Hati
- · Replies 3 ·
Graduate Uncovering the Constant C: Equal Mass Equals Equal Energy?
- Adam Rifai
- · Replies 2 ·
Graduate Definition of gravity according to GR
- aditya ver.2.0
- · Replies 2 ·
High School Can there be an area with no gravity?
- Pjpic
- · Replies 7 ·
Graduate Geometry of Time Dilation
- mcjosep
- · Replies 4 ·
Graduate Does the Twin Paradox Still Apply with Identical Acceleration Readings?
- Fantasist
- · Replies 22 ·
Graduate Coordinate values of G can vary from standard value
- Jonathan Scott
- · Replies 25 ·
Graduate Could Laser Beam Shifting Enable Faster-Than-Light Communication?
- Gaz1982
- · Replies 2 ·
Graduate Determining Metric of Space-Time (H.P. Robertson 1949)
- ConformalGrpOp
- · Replies 3 ·
Graduate How is the Faraday Tensor related to the 4-potential?
- unscientific
- · Replies 8 ·
Graduate Relativistic Effects On International Space Station (ISS)
- Gary Boothe
- · Replies 2 ·
High School Einstein says objects do not fall to the Earth?
- inertiaforce
- · Replies 127 ·
Graduate Does wormhole create gravitational wave?
- Pion
- · Replies 2 ·
Undergrad Can time dilation cause confusion in the twin paradox?
- lrubin28
- · Replies 14 ·
Graduate Explanation of the following field equation
- aditya ver.2.0
- · Replies 11 ·
Graduate How did Einstein derive the meaning of Schwarzchild's metric
- space-time
- · Replies 10 ·
Graduate Israel Wilson Perjes Metric: Tetrad Formalism Reference
- PhyAmateur
- · Replies 5 ·
Undergrad Time Dilation: Doubts & Questions Answered
- ubergewehr273
- · Replies 4 ·
Graduate What Are the Speed and Energy Density Limits of Dark Matter?
- vin300
- · Replies 2 ·
Graduate Were Hawking Radiation & Singularity Theorem Controversial in 1965?
- bcrowell
- · Replies 2 ·
Graduate Einstein's Regret: Penrose Asserts on Relativity
- gamow99
- · Replies 4 ·
Graduate Black Holes: Does Bob Survive Falling In?
- Zack Davis
- · Replies 2 ·
Graduate Clarification of concepts: Tetrads (Vielbeins), etc
- Breo
- · Replies 43 ·
Graduate Confusion about parallel transport
- emily1986
- · Replies 36 ·
Graduate Robertson-Poynting Effect & Relativistic Beaming
- universal_101
- · Replies 17 ·
Graduate Einsteins field equations us what type of index notation?
- oddjobmj
- · Replies 4 ·
Graduate Travel Faster than Light: Veritasium's Spinning Satellite Explained
- ubergewehr273
- · Replies 2 ·
Undergrad Velocity & Mass: Does Speed Increase Gravity?
- neuralnova
- · Replies 5 ·
Graduate Electromagnetic tensor and restricted Lorentz group
- TrickyDicky
- · Replies 3 ·
Graduate Fermionic Fields in Einstein Field Equations | Explained
- ShayanJ
- · Replies 8 ·
Graduate Can Time Be Reversed by Traveling Faster Than Light?
- ubergewehr273
- · Replies 7 ·
Graduate A question about wormholes and their typical representation
- Breo
- · Replies 3 ·
Graduate Relativity: Can a Spaceship Become a Black Hole?
- Zack Davis
- · Replies 4 ·
Graduate Understanding Lorentz Group Generators: Derivation & Step in Eq 15
- VVS
- · Replies 1 ·
Graduate Forces on High Velocity Object - Newtonian Formula
- johann1301
- · Replies 4 ·
Graduate Dark Energy: Is Stretching Space-Time the Answer?
- J7H18
- · Replies 5 ·
Graduate Gravitational Waves: Measurements & Experiments
- tonyxon22
- · Replies 15 ·
Graduate What is the Unique Metric Tensor in this Line Element?
- Breo
- · Replies 46 ·
Graduate How are tidal effects explained by general relativity?
- Leonardo Muzzi
- · Replies 4 ·
Graduate Understanding Gravitational Red Shifting with a Solar-Mass Black Hole
- Lamdbaenergy
- · Replies 1 ·
Graduate Understanding Simultaneity in Special Relativity
- Coffee_
- · Replies 6 ·
Graduate Gravitational Time Dilation: Observing Planet Life
- Ohannesy
- · Replies 2 ·
Graduate Can Something Really Be "mass less"?
- Akash Pardasani
- · Replies 8 ·
Graduate In order to build a wormhole. .
- snoopies622
- · Replies 15 ·
Graduate Doppler effect and speed of light as a constant.
- paalfis
- · Replies 1 ·
Graduate FTL & Causality: Understanding Time Travel
- serinorah
- · Replies 10 ·
Graduate What does "invariance of proper time" mean?
- SreenathSkr
- · Replies 45 ·
Graduate A question of "Time" and pre-determination and has everything already happened?
- Thormier
- · Replies 5 ·
Graduate Can clock transport tell us anything important
- dbkooper
- · Replies 48 ·
Graduate Is Grav & SR Time dilation additive?
- mcjosep
- · Replies 8 ·
Graduate Big Bang: A True Singularity That is Coordinate Independent
- victorvmotti
- · Replies 1 ·
Graduate How can we combine metrics in a spacetime with multiple point masses?
- dman12
- · Replies 8 ·
Graduate Time dilations on confusing situations
- Solvay
- · Replies 9 ·
Graduate Is Space-Time Dilation Just a Funny Concept or Does It Have Real Properties?
- Adrian2000
- · Replies 57 ·