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 Really confused - basic special relativity
- Tomer
- · Replies 44 ·
Graduate Definition of local inertial frame
- eudo
- · Replies 14 ·
Graduate Wormholes - A way to violate energy conservation?
- MrNerd
- · Replies 27 ·
Graduate The use of electromagnetic resonance to distort space time
- Mcgilvrey007
- · Replies 4 ·
Graduate Is Static Gravity Effectively Modeled as a Two-Form in Static Systems?
- pervect
- · Replies 10 ·
Undergrad Some exercises on relativistic doppler shift?
- Mr. Heretic
- · Replies 5 ·
Undergrad Question about simple linear accelerator
- new_r
- · Replies 13 ·
Undergrad N-body problem simulation and relativity
- alyx_vance
- · Replies 14 ·
Graduate Does GR remain in a universe without matter?
- only1universe
- · Replies 19 ·
Undergrad Does Light Still Travel at c Above .9c?
- easyrider
- · Replies 22 ·
Graduate Is time travel to the past or travel to a multiverse possible?
- tim22
- · Replies 2 ·
Graduate Fundamental question on GR: Basis vector meaning
- teddd
- · Replies 41 ·
Graduate Effect of Gravity get bent like light around another gravitational source
- Philosophaie
- · Replies 2 ·
Graduate Speed, Time and Events: How to Keep Up?
- rajeshmarndi
- · Replies 4 ·
Graduate Black holes in tetrad formalism
- inline
- · Replies 2 ·
Graduate Time Travel: What are the Theories & Factors?
- Theseus
- · Replies 89 ·
Graduate Temperature within the epicenter of a Black hole.
- Mordred
- · Replies 8 ·
Graduate Newbie question: Long trips and observed time
- tom_mi
- · Replies 9 ·
Graduate Time Traveling Light: Is Time Relative?
- gandr13189
- · Replies 22 ·
Graduate Geometry and long space travel
- chaszz
- · Replies 3 ·
High School The Impossible Quest: Kicking Machines in Space to Reach Light Speed
- nasgath
- · Replies 14 ·
Graduate Positive Definition of Space & Time for Layman
- rasp
- · Replies 16 ·
Graduate How does the Einstein tensor contribute to the equations of motion in 4d?
- alejandrito29
- · Replies 6 ·
Graduate Einstein simultaneity train thought
- rajeshmarndi
- · Replies 13 ·
Undergrad Time dilation, mirror question
- ucsdhopeful
- · Replies 2 ·
Graduate Causes that led to discovery of GR
- rajeshmarndi
- · Replies 1 ·
Graduate Vaidya/Lemaitre-Tolman metrics
- pierrecurie
- · Replies 9 ·
Graduate Cuurent statuses of theories of gravity
- chaszz
- · Replies 4 ·
Graduate Determining Speed of Muons: Exercise Problem
- liquidFuzz
- · Replies 7 ·
Graduate How Can Energy Density Be Calculated from a Metric in General Relativity?
- utesfan100
- · Replies 7 ·
Graduate Gravitational index of refraction
- Helios
- · Replies 9 ·
Graduate Comparing Hartle, Schutz, and Ohanian for GR Beginner
- Elwin.Martin
- · Replies 2 ·
Graduate Still learning about tensors
- grzz
- · Replies 30 ·
Graduate Mass to energy conversion at fraction of speed of light
- San K
- · Replies 4 ·
Undergrad Why can't we time travel in backward?
- Arjun Ar
- · Replies 25 ·
Graduate Time-like Intervals and Causality
- *FaerieLight*
- · Replies 1 ·
Graduate What is the Belt Paradox in Interferometrics Cart Phenomenon?
- jaquecusto
- · Replies 10 ·
Graduate Camera near the speed of light
- Voltaire6022
- · Replies 44 ·
Graduate Can two metrics be superposed?
- inottoe
- · Replies 6 ·
Graduate General Relativity at the microscopic level
- lavinia
- · Replies 2 ·
Graduate When the Schwarzschild radius is inside the star
- lavinia
- · Replies 7 ·
Graduate Twin and ladder paradoxes help really bugging me
- moe darklight
- · Replies 19 ·
Graduate Pioneer Anomaly Solved - Reflective Thermal Model
- bcrowell
- · Replies 39 ·
Graduate Deriving EFE from the Bianchi Identities
- jfy4
- · Replies 16 ·
Graduate How do I calculate time dilation due to acceleration in SR please?
- rede96
- · Replies 2 ·
Undergrad Gravity and other fundamental forces
- rajeshmarndi
- · Replies 3 ·
Graduate Covariant and Contravariant Kronecker Delta operating on Tensor
- lewis198
- · Replies 7 ·
Graduate Does gravity have effects through time?
- guss
- · Replies 16 ·
Graduate Question about static spacetime
- off-diagonal
- · Replies 9 ·
PF Logo Contest: Theory of Relativity
- micromass
- · Replies 31 ·
Graduate Deriving the Schwarzschild Metric
- JDoolin
- · Replies 7 ·
Graduate Difficulty in learning tensors
- grzz
- · Replies 7 ·
Graduate I forgot what this is called and what is is written out.
- LostConjugate
- · Replies 5 ·
Graduate Concerning the importance of preffered time coordinates
- femtofranco
- · Replies 1 ·
Graduate GR Class: Is it Enough to "Know" General Relativity?
- nlsherrill
- · Replies 6 ·
Undergrad Relative Velocity: How Newton & Einstein Used Light Speed
- bodhi
- · Replies 2 ·
Undergrad Two Balls in Space: An Observer's Perspective
- Mustakafine
- · Replies 27 ·
Graduate Do Gravity Waves Influence Quantum Particles and Dark Matter?
- mrspeedybob
- · Replies 11 ·
Graduate Relativistic Momentum Derivation Help
- jimbobian
- · Replies 6 ·
Graduate Lorentz Factor: Significance & Consequences
- bodhi
- · Replies 9 ·
Graduate Cygnus X-1 is nearly extremal.
- bcrowell
- · Replies 8 ·
Graduate Need help resolving this paradox with time dilation
- EricD516
- · Replies 9 ·
Graduate Einstein's Train and Lightning Bolt Simultaneity Situation
- highschoolkid
- · Replies 5 ·
Graduate Tensor transforming law problem / metric-delta contraction
- teddd
- · Replies 3 ·
Graduate Einstein Tensor Divergence Proof: How to Show it is Divergence-Free?
- teddd
- · Replies 3 ·
Graduate What would the universe be like if c were not uniform
- bobsmith76
- · Replies 15 ·
Undergrad Understanding Einstein's E=mc^2 Theory
- taylrl3
- · Replies 21 ·
Undergrad Gravitational Force on a Body: Is it Absolute?
- skanda9051
- · Replies 5 ·
Undergrad Black Hole Gravity: Mass vs Distance
- scilover89
- · Replies 28 ·
Graduate Derivation of Relativistic Momentum WITHOUT using Relativistic Mass?
- SamRoss
- · Replies 11 ·
Graduate Gravitation and Space Time warps
- Lazernugget
- · Replies 10 ·
Graduate Rocket-man measuring speed of light
- quantizedzeus
- · Replies 2 ·
Undergrad Relativistic Momentum Help With Equation Reduction
- jimbobian
- · Replies 6 ·
Graduate Can Exceeding the Speed of Light Reverse Cause and Effect?
- ZealScience
- · Replies 7 ·
Graduate Twin Paradox with no asymmetry
- joeh1971
- · Replies 10 ·
Graduate Time travel by going fast in a spaceship: questions
- tufflax
- · Replies 3 ·
Undergrad Check My Relativity Video for an Engineer | Answer His Question on Light's Speed
- zimbabwe
- · Replies 5 ·
Graduate Lorentz contraction in other dimensions?
- Trifis
- · Replies 16 ·
Graduate The General Relativity Metric and Flat Spacetime
- Anamitra
- · Replies 78 ·
Graduate Godel and The Philosophy of Special Relativity
- bobc2
- · Replies 26 ·
Undergrad Calculating Solution to Sketch: Help Needed
- liquidFuzz
- · Replies 6 ·
Graduate Can we have a dedicated thread for FAQ requests?
- tltmts
- · Replies 11 ·
Graduate Bullet-hole Paradox: Train Frame & Stopped Train Measurements
- NSEFF
- · Replies 16 ·
Graduate Find Poincare Transform for Momentarily Co-Moving Reference Frame
- phatm
- · Replies 7 ·
Graduate Can We Manipulate Space-Time with Different Types of Energy?
- space guy1
- · Replies 1 ·
Graduate Michelson-Morley experiment(s)
- fluidistic
- · Replies 6 ·
Graduate Two different velocity variables in relativistic momentum?
- SamRoss
- · Replies 5 ·
Undergrad Magnetism to test for movement?
- sachin123
- · Replies 9 ·
Graduate Not Understanding Time Dilation.
- The New Guy
- · Replies 29 ·
Graduate Creating a Target with 3 Photons in SR Propagating Sphere of Light
- Reff
- · Replies 120 ·
Graduate What is the correct condition for the winning pulse in special relativity?
- PineApple2
- · Replies 9 ·
Graduate 5D Space,Higher Dimensions etc.
- Anamitra
- · Replies 1 ·
Graduate Completely General Lorentz Transformation
- OniLink++
- · Replies 7 ·
Graduate Understanding Time Dilation: The Paradox of Aging in Outer Space
- fluidistic
- · Replies 4 ·
Graduate Space-Time Curvature: Causes & Movement
- funkwort
- · Replies 16 ·
Graduate Not Understanding Time Dilation - mk 2.
- cmb
- · Replies 64 ·
Graduate Why Is K-Calculus Confusing in Understanding Special Relativity?
- Tomer
- · Replies 3 ·
High School Unraveling the Mystery of E=mc2: Speed of Light
- ANO94
- · Replies 1 ·
Graduate How is an electric field induced in a wire loop moving through a B field?
- cragar
- · Replies 9 ·
Graduate Energy-momentum of gravitational waves
- femtofranco
- · Replies 1 ·