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
Are Black Holes Truly Fiction? Examining the Evidence
- Red-Arrow
- · Replies 12 ·
Graduate Constant acceleration approach? =/
- Smiles302
- · Replies 4 ·
Graduate TIme Dilation & Quantum Entanglement Question
- alphauser51
- · Replies 3 ·
Graduate Space-time geometry in the absence of matter
- rodsika
- · Replies 4 ·
Graduate Big bang in Robertson - Walker space - time
- WannabeNewton
- · Replies 4 ·
Graduate Gravitational waves by analogy with Maxwell's equations
- johne1618
- · Replies 5 ·
Graduate Do you have to travel away from the observer for time to slow down?
- zeromodz
- · Replies 5 ·
Graduate What If Lorentz Invariance Violation Were Detected?
- rodsika
- · Replies 4 ·
Graduate Understanding Reduced Mass and its Role in Classical Mechanics
- andrewr
- · Replies 10 ·
Graduate Doubt about gravitational waves
- TrickyDicky
- · Replies 80 ·
Graduate Relativity and the Heisenberg Ontology
- rodsika
- · Replies 1 ·
Graduate Q: if you travel closer to c, will you see length(distance) contraction
- ppppppp
- · Replies 3 ·
Graduate Rietdijk-Putnam Argument: Free Will, Relativity & The Andromeda Paradox
- Ookke
- · Replies 22 ·
Graduate Distance between two points in spacetime
- dhumidifier
- · Replies 22 ·
Graduate Energy Approximation for Small Velocity - Schutz's "A First Course in GR
- mess1n
- · Replies 1 ·
Graduate Proving Lagrangian EOM with Non-minimal Coupling
- kalish
- · Replies 3 ·
Graduate Equations of motion por a free particle in curved spacetime
- MManuel Abad
- · Replies 2 ·
Graduate Contravariant metric components
- michael879
- · Replies 1 ·
Undergrad Relativistic Space Travel: Fact or Fiction?
- Minty
- · Replies 14 ·
Undergrad What is the kinetic energy of an object traveling at the speed of light?
- joeyjo100
- · Replies 3 ·
Graduate Why is the universe's expansion accelerating despite gravitational forces?
- LeeJeffries
- · Replies 1 ·
Undergrad Speed of light not a legitamate factor in relation to mass
- Jimbrady57
- · Replies 17 ·
Graduate Understanding the Fall into a Black Hole: A Scientific Analysis
- TobyC
- · Replies 20 ·
Undergrad When people talk about the current size of the observable universe
- TobyC
- · Replies 6 ·
Graduate Discovering Co-frame Basis Vectors for General Einstein Metric
- jfy4
- · Replies 4 ·
Graduate Conservation of Energy Down The Drain?
- dm4b
- · Replies 17 ·
Graduate What would be the physical consequence of a non-metric connection?
- pellman
- · Replies 7 ·
Graduate Geodesic Motion for the Gödel Space-time
- jfy4
- · Replies 26 ·
Graduate Einstein's Theory - Is Moving Away at Speed 'c' Constant Time?
- gpsinghsandhu
- · Replies 4 ·
Graduate Max Occupation of Spacetime: Lorentz-Fitzgerald Equation
- Hebob80
- · Replies 1 ·
Graduate Do Twins Age Differently in Space Depending on Their Travel Path?
- rede96
- · Replies 12 ·
Undergrad Why is there a universal speed limit, c, and why is it what it is?
- CosmicVoyager
- · Replies 210 ·
Graduate General Tensor contraction: Trace of Energy-Momentum Tensor (Einstein metric)
- tetris11
- · Replies 5 ·
Graduate Does Absolute Zero Affect Aging Like Twin Theory?
- 42istheanswer
- · Replies 1 ·
Graduate The End of the Universe in an Instant
- JDude13
- · Replies 3 ·
Graduate Relativistic rotational kinetic energy
- johne1618
- · Replies 1 ·
Graduate Einstein's June 30 1905 paper - help please with the maths
- larny
- · Replies 23 ·
Graduate Solutions to Field Equations with Einstein Tensor = 1
- edgepflow
- · Replies 3 ·
Undergrad What is the best way to be a relativist ?
- Dark_knight90
- · Replies 21 ·
Graduate The case for True Length = Rest Length
- rjbeery
- · Replies 371 ·
Graduate Time dilation in horizontal clock
- teodorakis
- · Replies 9 ·
Undergrad The Conundrum of Duplicating Atoms in Time Travel
- Jbcourt
- · Replies 7 ·
Graduate Radial Motion in Schwarzschild's Geometry
- Anamitra
- · Replies 47 ·
Graduate Gravity as an emergent phenomenon reading suggestions
- Lapidus
- · Replies 5 ·
Graduate Cause Precedes Effect: Proving Inertial Reference Frames
- kini.Amith
- · Replies 16 ·
Graduate Why is General Relativity not renormalizable?
- michael879
- · Replies 12 ·
Graduate The Affine Connection components
- Radiohannah
- · Replies 2 ·
Graduate Q: Inertial Frames & Detecting Motion
- mjacobsca
- · Replies 1 ·
Graduate Time Dilation Puts Two Observers at different Times?
- JDude13
- · Replies 10 ·
Graduate Does an object lose mass when raised against a gravitational field?
- m.e.t.a.
- · Replies 8 ·
Graduate The Paradox of Oppositely Traveling Objects in Spacetime
- dennis83704
- · Replies 5 ·
Graduate Rindler Observer: Unruh Effect & Spacetime Geometry
- pythagoras88
- · Replies 3 ·
Graduate Tachyon - assymetry between space and time
- Dmitry67
- · Replies 7 ·
Graduate Reasons for 1D Time vs 2D Time: Metrics Explained
- Dmitry67
- · Replies 2 ·
Graduate How Is Energy Conserved in General Relativity and Cosmology?
- paweld
- · Replies 7 ·
Graduate Are fundamental particles singularities in the general relativistic sense?
- JDude13
- · Replies 2 ·
Undergrad Falling into a black hole and then shining a light?
- cragar
- · Replies 12 ·
Graduate Can we communicate with people outside a black hole?
- cragar
- · Replies 16 ·
Graduate ISV VentureStar (Avatar): acceleration problem
- TRodrigues
- · Replies 2 ·
Graduate Contraction in the Riemann Tensor
- Fraser
- · Replies 2 ·
Undergrad [Novice] Why isn't Time Space?
- JDude13
- · Replies 2 ·
Graduate Experimantal verification of GR
- paweld
- · Replies 14 ·
Graduate Dokuchaev, Is there life inside black holes?
- bcrowell
- · Replies 4 ·
Graduate Time and Light speed communication
- jfy4
- · Replies 4 ·
Graduate How can we use distances between points to define geometry?
- pervect
- · Replies 10 ·
Graduate Trying to understand what extremal proper time means.
- zeromodz
- · Replies 12 ·
Graduate Question about time dilation in the schwarzchild metric?
- zeromodz
- · Replies 1 ·
Graduate Can tensors be differentiated and if so, what is the result?
- Radiohannah
- · Replies 5 ·
Graduate Properties of curvature tensor in 3 dimensions?
- im_hammer
- · Replies 3 ·
Graduate Black Hole Formation: Does it Start at the Center or Simultaneously?
- nitsuj
- · Replies 3 ·
Graduate Question regarding light clocks and time dilation.
- amk0713
- · Replies 6 ·
Graduate The speed of light with an accelerating observer.
- postermmxvi
- · Replies 7 ·
Graduate Creating a black hole with any mass?
- Nickj800
- · Replies 3 ·
Graduate Singularities, Density, and the Planck Length
- TeslaTrevor
- · Replies 14 ·
Undergrad Variability of the speed of light
- skyelectric
- · Replies 29 ·
Graduate Can you turn a black hole inside out with charge?
- Antiphon
- · Replies 8 ·
Graduate Gravity and Time Dilation: How Do They Relate?
- vector22
- · Replies 21 ·
High School Newbie Asks: What is Spacetime?
- jerrok
- · Replies 10 ·
Graduate Are the forces of gravity subject to the Doppler effect?
- kmarinas86
- · Replies 8 ·
Graduate Hawking Radiation w/out black holes
- Pengwuino
- · Replies 4 ·
Graduate General questions about relativistic derivations and deductions
- SeventhSigma
- · Replies 11 ·
Graduate Mathematical Skills for Understanding General and Special Relativity
- Aaronvan
- · Replies 4 ·
Graduate Wald: Ch. 2, Problem 8.b
- Rasalhague
- · Replies 4 ·
Graduate Understanding Stellar Aberration and Its Relationship to Transverse Velocity
- kmarinas86
- · Replies 12 ·
Graduate Calculating Vector Parallel Transport & Berry's Phase
- JustinLevy
- · Replies 14 ·
Graduate Is there any good reference of tetrad in GR
- yicong2011
- · Replies 2 ·
Graduate Spacetime doesn't really exist does it?
- andrewkirk
- · Replies 43 ·
Graduate Manifold / Atlas / Chart (Building Simple Example)
- ldechent
- · Replies 2 ·
Undergrad Is gravity a bigger mystery than charge?
- manulal
- · Replies 7 ·
Graduate A dimensional problem in relativistic mechanics
- ShayanJ
- · Replies 2 ·
Undergrad Does the frequency of light change as I travel toward it?
- cubud
- · Replies 9 ·
Undergrad Velocities - how relative are they really?
- antred
- · Replies 16 ·
Graduate Relativistic Optics: Recommended Texts for Deeper Learning
- ralqs
- · Replies 1 ·
Graduate How are Christoffel symbols different in rotating reference frames?
- Jonnyb42
- · Replies 7 ·
Graduate Gravity can still be caused by force?
- rogerl
- · Replies 12 ·
Graduate Scenario in an attempt to understand relativity
- CosmicVoyager
- · Replies 55 ·
Graduate Gravitons: Explained for New Learners
- LeeJeffries
- · Replies 2 ·
Graduate Does this scenario disprove relativity?
- erics
- · Replies 6 ·
Graduate Mach's principle and boundary cases
- happyfunbot
- · Replies 9 ·
Graduate Tensor Questions: Significance & Using Einstein's Equations
- khemist
- · Replies 8 ·