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 How to obtain the transformation of Null Tetrad ?
- Karmerlo
- · Replies 1 ·
Graduate Gravitational Pseudotensor Requirements
- Mueiz
- · Replies 10 ·
Graduate Is Faster Than Light Travel Really Traveling Backwards In Time?
- byron178
- · Replies 29 ·
Graduate How is Weyl Tensor associated with tidal force ?
- yicong2011
- · Replies 6 ·
Undergrad Who Experiences 50 Light Years Differently: The Astronaut or Mission Control?
- Kkamann
- · Replies 8 ·
Graduate Why is there gravity at a distance?
- Khashishi
- · Replies 2 ·
Graduate Cause of Gravity: Lewis Epstein's Theory Explained
- CRichard
- · Replies 32 ·
Graduate Velocity of Light, for an Accelerating Observer
- Mike_Fontenot
- · Replies 9 ·
Graduate Charge and the Equivalence Principle
- GRDixon
- · Replies 17 ·
Graduate Observable universe radius compared to age in matter and vacuum dominated models
- bcrowell
- · Replies 13 ·
Graduate Gravitational Waves: Is Gravity a Force in GR?
- Mononoke
- · Replies 3 ·
Graduate Why does the timelike vector in an orthonormal tetrad have -1?
- Junjie
- · Replies 1 ·
Graduate Universality of Doppler shift for energy of any massless field
- bcrowell
- · Replies 19 ·
Graduate What Other Theories of Gravity Exist Beyond Relativity in Modern Physics?
- Jake Minneman
- · Replies 3 ·
Graduate Special Relativity: A or B Series of Time?
- cezalinho
- · Replies 6 ·
Graduate What happens when you go near the speed of light and there's stuff in the way?
- Negeng
- · Replies 15 ·
Graduate Why does light have constant speed if objects can exceed it?
- Rupe
- · Replies 9 ·
Graduate Why does spacecraft B's clock rate differ between reference frames A and C?
- Bjarne
- · Replies 28 ·
Graduate Is Rest Mass Conserved by the Conservation of Energy and Momentum?
- superg33k
- · Replies 38 ·
Graduate How does gravity travel through wormholes?
- FtlIsAwesome
- · Replies 2 ·
Graduate Mass Equation in SR: Determining Rest Mass of Moving Objects
- Arsenic&Lace
- · Replies 4 ·
Graduate Measurement Problem in Einstein's Relativity
- Varon
- · Replies 21 ·
Graduate Projectile fired from train at 0.9c: relativistic velocity addition
- mdergance3
- · Replies 3 ·
Graduate Lorentz Transformation Applicability Re: EM & Casuality
- danmay
- · Replies 3 ·
Graduate Is the intellect the absolute reference frame?
- ktoz
- · Replies 22 ·
Graduate The set of allowed trajectories in spacetime
- Demon117
- · Replies 6 ·
Graduate What is the ratio of radii for a black hole and steel ball in equilibrium?
- JohnBarlow
- · Replies 2 ·
Graduate Can I express stationary spacetime and static spacetime in this way?
- yicong2011
- · Replies 8 ·
Graduate Divergence theorem/ Surface integral
- vaibhavtewari
- · Replies 10 ·
Graduate Absolute parallelism in teleparallel gravity
- karlzr
- · Replies 8 ·
Graduate Train Paradox: Force & Curvature Explained
- ZealScience
- · Replies 3 ·
Graduate Question on the reasoning behind the light clock thought experiment.
- Inducer
- · Replies 17 ·
Graduate What are valid Preferred Frames?
- Varon
- · Replies 2 ·
Graduate Covariant VS manifestly covariant
- superg33k
- · Replies 7 ·
Graduate Albert Einstein's theory of gravity is generally explained in a wrong way
- eggman89
- · Replies 12 ·
Graduate Equivalence Principle: Are there any restrictions
- Jorl17
- · Replies 9 ·
Graduate Does acceleration at 1g cause time dilation relative to Earth's clock?
- rede96
- · Replies 20 ·
Graduate Notation for basis of tangent space of manifold
- demonelite123
- · Replies 3 ·
Graduate Exploring Time Relativity with Identical Twins: Sam & Pam
- SpY]
- · Replies 15 ·
Graduate Electromagnetic Interference in Einestien Field Equation
- Mueiz
- · Replies 21 ·
Undergrad How Long Would Earth React to the Sun's Instant Disappearance?
- SpY]
- · Replies 14 ·
Graduate Are Galaxies and Quasars Inertial Reference Frames in an Expanding Universe?
- ZealScience
- · Replies 13 ·
Graduate Geometry of Space-Time, Mass & Speed: Higgs Boson
- nomisrosen
- · Replies 18 ·
Graduate Possible changes in the Law of Gravitation
- mishrashubham
- · Replies 12 ·
Graduate Derivation of Newton's Third Law (?)
- nonequilibrium
- · Replies 19 ·
Graduate Understand "Manifestly Covariant" in Relativity Notes
- Kalidor
- · Replies 16 ·
Graduate Space Warping & Mass: Is There an Equation?
- Jake Minneman
- · Replies 8 ·
Graduate Gravity Acceleration through a Hole in Earth
- CutterMcCool
- · Replies 1 ·
Undergrad Inertial vs accelerating frame
- Rear Naked
- · Replies 15 ·
Graduate Stress-energy tensor in static cylindrical case
- ArthurB
- · Replies 3 ·
Graduate Relativistic optics, w/ acceleration
- ralqs
- · Replies 14 ·
Graduate How Does the Geometry of Space Affect Gravitational Wave Amplitude?
- Prairie
- · Replies 1 ·
Undergrad Questions on Stress-Energy Tensor: Definition & 0 Value
- Ashwin_Kumar
- · Replies 1 ·
Graduate Topology of Minkowski spacetime
- ConradDJ
- · Replies 3 ·
Graduate Can Special Relativity Explain Accelerating Reference Frames?
- ralqs
- · Replies 6 ·
Undergrad Age Difference in Space Travel: How Does it Happen?
- bodhi
- · Replies 7 ·
Graduate Does a charge gain energy in every frame when it is accelerated?
- kmarinas86
- · Replies 40 ·
Graduate Does More Mass Mean Slower Time Travel?
- aglo6509
- · Replies 21 ·
Graduate Solving a Calculation Problem - Basic Math/Stress Energy Tensor
- kalish
- · Replies 1 ·
Graduate Bowling ball rubber sheet analogy
- Naty1
- · Replies 56 ·
Graduate Anti-Gravity from Matter-AntiMatter Repulsion
- sanman
- · Replies 34 ·
Graduate Can you determine absolute motion?
- Physicist1231
- · Replies 130 ·
Graduate Can't we transfer information this way? Still faster than light?
- Vikrant94
- · Replies 4 ·
Graduate How does a satellite orbit in curved spacetime if it's not touching the curved fabric?
- TheJoninator
- · Replies 13 ·
Graduate What Happens to Photon Momentum When Light Travels Through Different Mediums?
- flyerpower
- · Replies 4 ·
Graduate Understanding Spacetime Bending & Gravity Effects
- flyerpower
- · Replies 13 ·
Graduate Einstein's Theory of Special relativity
- Science Proff
- · Replies 15 ·
Graduate Age of Universe: Is There an Alternate Perception?
- Holland
- · Replies 4 ·
Graduate Is the Two Body Problem in GR Solvable Using Geodesics?
- PAllen
- · Replies 17 ·
Graduate Finding Lorentz Factor of a Point Particle in Curved Spacetime
- vaibhavtewari
- · Replies 5 ·
Graduate Wikipedia: using the four-velocity to understand time dilation (?)
- nonequilibrium
- · Replies 4 ·
Graduate Mathematical Operations of General Relativity
- GDavila
- · Replies 4 ·
Graduate Normalization of a delta function in curved spacetime
- jdstokes
- · Replies 3 ·
Graduate Modified Twin Paradox. (Experts required).
- RelConfused
- · Replies 23 ·
What is the true nature of time?
- Parbat
- · Replies 242 ·
Undergrad Why does light travel perpendicular to the train in time dilation examples?
- tomz
- · Replies 3 ·
Graduate Room in Spaceship: Apparent Paradox?
- Superstring
- · Replies 2 ·
Undergrad Light emitting from an object moving near the speed of light.
- Addiction2Code
- · Replies 1 ·
Graduate Conservation Laws vs a Spinning 'Disk Brake'
- Q-reeus
- · Replies 3 ·
Graduate Are acceleration and gravity completely equivalent?
- damianpaz
- · Replies 13 ·
Graduate Large diffeomorphisms in general relativity
- tom.stoer
- · Replies 52 ·
Graduate Does the expanding universe contradict relativity?
- rede96
- · Replies 3 ·
Graduate What is the surprising result for c_hat according to an accelerating observer?
- Mike_Fontenot
- · Replies 7 ·
Graduate Will GR ever explain the flyby anomaly?
- kmarinas86
- · Replies 17 ·
Graduate Can 5D Wormholes Make Instant Global Shipping Possible?
- rodsika
- · Replies 3 ·
Graduate How Do Satellites Orbit Lagrange Points Without Mass?
- gregweymann
- · Replies 15 ·
Graduate Explaining Relativity: Motion in a Gravity Field
- hprog
- · Replies 5 ·
Graduate Determinism, Stokes' Theorem and Relativity
- Phrak
- · Replies 5 ·
Graduate Adding Velocities: Formulas & Calculations
- lavster
- · Replies 1 ·
Graduate Inside the Event Horizon: The Relativistic Effects on Mass and Light
- CGann
- · Replies 17 ·
Graduate How Does Relativity Affect Our Perception of Time and Space?
- stonehaven
- · Replies 1 ·
Graduate Does an electron moving along a geodesic radiate?
- jnorman
- · Replies 31 ·
Graduate How Does the EFE Describe Geodesic Motion in Curved Spacetime?
- TrickyDicky
- · Replies 26 ·
Graduate Principle of Equivalence Re-examined
- e2m2a
- · Replies 10 ·
Graduate What is the angular-momentum 4-vector?
- Zarathustra0
- · Replies 11 ·
Graduate Where does relativity allow for non-determinism and free will?
- Dmitry67
- · Replies 19 ·
Graduate Confusion with proper time from different frame of references
- Stevey_R
- · Replies 2 ·
Graduate Mass and Speed: The Relationship in Relativity
- denni89627
- · Replies 15 ·
Graduate Is Proper Time Relative in Special Relativity?
- Shark 774
- · Replies 31 ·
Graduate Am I interpreting Einstein correctly?
- bcrowell
- · Replies 39 ·