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 Time Rate at Earth's Center: Effects on Reactions?
- Gerinski
- · Replies 8 ·
Graduate Can a Non-Symmetric Metric Tensor Raise and Lower Indices in General Relativity?
- Physicist97
- · Replies 2 ·
Graduate Distant stars and length contraction
- Ookke
- · Replies 13 ·
Graduate Calculating Differential Precession of Gyroscopes Due to Gravitational Waves
- WannabeNewton
- · Replies 1 ·
Graduate Finding a master thesis topic combining statistical mechanics and general relativity
- iorfus
- · Replies 5 ·
Graduate Is Proper Time=0 Equivalent to Saying Proper Time Doesn't Apply?
- Nick666
- · Replies 35 ·
Graduate What gravitational lensing research will physicists pursue in the next 15 years?
- Am.obrien
- · Replies 6 ·
Graduate Translate acceleration to GR gravity
- ChrisVer
- · Replies 15 ·
Graduate Why does the trace of equation A.4 give 4α instead of 6α?
- nenyan
- · Replies 3 ·
Graduate Do time dilation and length contraction occur simultaneously?
- VertexOperator
- · Replies 7 ·
Graduate Derivative of the mixed metric tensor
- Brage
- · Replies 5 ·
Graduate General relativity and curvilinear coordinates
- "Don't panic!"
- · Replies 127 ·
Graduate Length contraction shadow of a moving ruler with flash bulb
- rede96
- · Replies 24 ·
Graduate Translational Motion Vs. Rotational Motion
- jpescarcega
- · Replies 2 ·
Graduate Two Lorentz Boosts Causing Rotation - Measurable w/ Gyroscope?
- Ookke
- · Replies 2 ·
Graduate Hamilton EOM for Schwarzschild Metric: Problem Solved
- sergiokapone
- · Replies 3 ·
Graduate Motion vs Rest: How Does Relativistic Time Differ?
- ag048744
- · Replies 6 ·
Graduate Relativistic Effects in Relative Motion of Objects
- ag048744
- · Replies 8 ·
Graduate Time dilation between epochs with different mean densities
- Ans
- · Replies 9 ·
Graduate Charge Dropping on Rindler Horizon: Coulomb Force Effects?
- jartsa
- · Replies 5 ·
Graduate Does Dark Matter Interact with Itself in Black Holes?
- Justice Hunter
- · Replies 6 ·
High School Would the Earth Have A Delay Reaction if the Sun disappeared
- Dopplershift
- · Replies 6 ·
Graduate Understanding the MMX Calculation Problem: Vertical vs. Horizontal Analysis"
- Kanesan
- · Replies 36 ·
Undergrad Length contraction and direction of tavel
- Amr Elsayed
- · Replies 112 ·
Graduate Flow of Magnetic Charge: A Source in Ampere's Law? - Bob Eisenberg
- Bob Eisenberg
- · Replies 2 ·
Graduate No-faster-than-light in the special relativity
- gxu
- · Replies 9 ·
Graduate Raising Index of Electromagnetic Energy Momentum Tensor
- jstrunk
- · Replies 7 ·
Graduate Killing vector tangents to geodesics
- Andre' Quanta
- · Replies 2 ·
Undergrad Why is a photon massless if it's a form of energy?
- Swetha.M.L
- · Replies 8 ·
Graduate Length contraction and the speed of light
- Mentz114
- · Replies 54 ·
Undergrad Relativity for Poets: A Free eBook
- bcrowell
- · Replies 3 ·
Graduate Where does the energy come from for gravitational forces?
- Leonardo Muzzi
- · Replies 6 ·
Graduate Would magnetic charge be Lorentz invariant?
- Bob Eisenberg
- · Replies 15 ·
Graduate Variation of a tensor expression with indices
- spaghetti3451
- · Replies 2 ·
Graduate Is temperature or entropy a Lorentz scalar?
- ORF
- · Replies 6 ·
Graduate Four-velocity of massless particle
- sweet springs
- · Replies 5 ·
Graduate Can the holographic principle extend to lower dimensions?
- Justice Hunter
- · Replies 13 ·
Graduate Gravitation, 2 objects of same properties
- Destroxia
- · Replies 2 ·
Graduate Time dilation in accelerating reference frames
- rede96
- · Replies 39 ·
Graduate Time dilation in relativity theory
- Muhammad Zubair
- · Replies 11 ·
Graduate Gravitational Warping by Non-Spherical Celestial Bodies
- Gerinski
- · Replies 1 ·
Graduate Why Shapiro delay uses coordinate difference not physical distance
- Chhhiral
- · Replies 11 ·
Graduate Using Lorentz transformation with two dimensions
- Stephanus
- · Replies 10 ·
Graduate Why doesn't Earth's axial tilt realign with the sun's curved spacetime?
- Arthur95
- · Replies 4 ·
Graduate Lorentz and Doppler and signal pick up
- Stephanus
- · Replies 30 ·
Graduate Is a Metric Feedback Possible in General Relativity?
- OccamsRazor
- · Replies 8 ·
Graduate Do wormholes work by passing through higher dimensional space?
- kuartus4
- · Replies 1 ·
Penn State: General Relativity Centennial Stream Jun 7-12
- robphy
- · Replies 3 ·
Graduate When is the momenergy vector invariant?
- Cluemore
- · Replies 14 ·
Graduate Solving the Shorter Distance Puzzle with Spacetime
- Devil Moo
- · Replies 17 ·
Undergrad Can Gravity Cause an Object to Pull Itself Inward?
- James Gordon
- · Replies 14 ·
Graduate When Will B2 Be Received by A?
- Stephanus
- · Replies 19 ·
Graduate Interpretation of double bending / deflection
- SpiderET
- · Replies 9 ·
Graduate Textbook recommendations for calculating Christoffel symbols
- CASPIDE
- · Replies 3 ·
Undergrad Lorentz Transformation negative result
- bb1413
- · Replies 24 ·
Graduate Time Unit Vector: Calculate d'Alembert with 4 Vectors
- kareeemmuhammed
- · Replies 3 ·
Graduate Normalization of Four velocity
- aditya ver.2.0
- · Replies 1 ·
Graduate Why does GR need dark matter and energy if it fails at cosmological scales?
- greypilgrim
- · Replies 13 ·
Graduate Can I stick my arm in past the event horizon?
- Curtph
- · Replies 40 ·
Graduate Why does each observer see the other's clock slow down in time dilation?
- DarkStalker
- · Replies 4 ·
Graduate Why is Ω−1 unstable in dark energy dominated universes?
- michael879
- · Replies 10 ·
Graduate Can relativistic stars avoid being black holes at arbitrary mass and radius?
- martinbn
- · Replies 15 ·
Graduate What is the Principle of General Covariance in Physics?
- shubham agn
- · Replies 5 ·
Graduate Magnetic force from current loops using relativity
- ieatsk8boards
- · Replies 4 ·
Graduate Geometry in General Relativity: Round Marble on a Box
- berra
- · Replies 5 ·
Graduate Is the Neo-Lorentzian Framework Gaining Acceptance in Modern Physics?
- hunt_mat
- · Replies 4 ·
Undergrad Relative momentum and relative mass
- Amr Elsayed
- · Replies 57 ·
Graduate Reversing Indices in Contractions: Can it be Done?
- unscientific
- · Replies 7 ·
Graduate Measuring Relative Speed of Frames Using Spacetime Interval
- russphelan
- · Replies 5 ·
Graduate Approaching Light Speed: Why Would It Fail?
- jonatron5
- · Replies 4 ·
High School Earth vs Space: Is a Falling Ball PULL or PUSH?
- Deepak K Kapur
- · Replies 5 ·
Graduate How Does Tetrad Formalism Relate to the Hilbert-Einstein Action?
- Andre' Quanta
- · Replies 2 ·
Graduate Does the Twin Paradox Break Symmetry in the Zig-Zag Scenario?
- Stephanus
- · Replies 104 ·
Graduate How Does Spacetime Curvature Affect Light's Movement and Dynamics?
- Isaac0427
- · Replies 8 ·
Graduate Muon length contraction confusion
- amardeep
- · Replies 20 ·
Graduate Distinction between coordinate and reference frame
- Andre' Quanta
- · Replies 7 ·
Graduate Baez's vizualisation of Ricci tensor
- exponent137
- · Replies 6 ·
Undergrad Is E inversely proportional to time if c=d/t in E=mc²?
- Deepak K Kapur
- · Replies 63 ·
Graduate Calculating Ship Time w/ Varying Acceleration in Relativity
- stefan10
- · Replies 1 ·
Graduate Metric for a free falling observer
- Andre' Quanta
- · Replies 7 ·
Graduate If gravitational lensing proves GR, why isn't it universally accepted?
- Isaac0427
- · Replies 64 ·
Graduate Equivalence Principle: Einstein vs Strong
- Andre' Quanta
- · Replies 4 ·
Graduate Covariant form of Newton's law of gravity
- shubham agn
- · Replies 4 ·
Graduate Observed speed of light shone back from 0.9c forward motion
- abrogard
- · Replies 13 ·
Graduate Frequency shifts in rotating frames
- Mentz114
- · Replies 42 ·
Graduate Invariant mass of a photon changes - from Wiki
- Imager
- · Replies 13 ·
Graduate Understanding Einstein Field equations?
- meyol99
- · Replies 4 ·
Graduate Is angular momentum conserved at the Big Bang singularity?
- Karim Habashy
- · Replies 1 ·
Undergrad Time Dilation: 1 Hour=77 Hours - Can I Phone?
- Mitchell Swan
- · Replies 8 ·
Graduate Is curvature possible for a 2D metric?
- space-time
- · Replies 34 ·
Graduate Does gravity bend around massive objects like light does?
- Stephanus
- · Replies 3 ·
Graduate Is Net Charge Conserved in Special Relativity with Current Flowing in a Wire?
- arpon
- · Replies 41 ·
Graduate Thin Shell Cavity in General Relativity
- Markus Hanke
- · Replies 17 ·
Graduate Spacetime Curvature: Which Tensor Gives Coordinates?
- jpescarcega
- · Replies 3 ·
Graduate Twin Paradox and Time Asymmetry in Special Relativity
- Stephanus
- · Replies 10 ·
Graduate Is the Sagnac Effect Misleading in Understanding Length Contraction?
- MattRob
- · Replies 35 ·
Graduate Light at speeds faster than the speed of light?
- Quds Akbar
- · Replies 29 ·
Graduate Why are tests of general relativity based on vacuum solutions?
- CycoFin
- · Replies 32 ·
Graduate Why c Speed Limit Doesn't Prove Space is Continuous?
- Andrea Panza
- · Replies 11 ·
Graduate What will be the rate of fuel consumption of a rocket near 'c'
- Prashan Shan
- · Replies 8 ·