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 What is the oldest frame of reference in the Twin Paradox?
- Sumo
- · Replies 14 ·
Graduate Any mass accelarating @ 'c' is light
- kittz
- · Replies 2 ·
Graduate Relativistic Hydrostatic Pressure in Constant Gravitational Field
- antoinebret
- · Replies 4 ·
Graduate Cartan Formalism: Mapping Tetrad Field to Minkowski Spacetime
- paweld
- · Replies 2 ·
Graduate What Are the Implications of Approaching the Speed of Light for Space Travel?
- Star Drive
- · Replies 38 ·
Graduate How Does Spacetime Manipulation Affect the Flow of Time?
- Yuripe
- · Replies 54 ·
Graduate Is Gravity an Inertial Force According to the Equivalence Principle?
- dulrich
- · Replies 9 ·
Graduate How could you visit yourself 10 mins ago?
- seanbateman
- · Replies 7 ·
Undergrad If mass becomes inifinite when approaching the speed of light, then photons?
- colbertsparro
- · Replies 7 ·
Graduate Questions on Energy, Mass, and velocity
- Beprepared
- · Replies 4 ·
Graduate Are Black Holes Real? Examining Empirical Evidence and Astronomical Distinctions
- petergreat
- · Replies 24 ·
Graduate Rindler Question: Time Dilation in Born Accelerated Frame
- Austin0
- · Replies 1 ·
Graduate How Does Acceleration and Gravity Affect Time Dilation?
- QAT
- · Replies 8 ·
Undergrad What is the most accurate gravitational force equation?
- jaketodd
- · Replies 11 ·
Graduate Is there a classification for tensors that are invariant under isometries?
- paweld
- · Replies 8 ·
Graduate Is Gravity Only a Force on Earth or a Geometry Problem as Well?
- physics.alex
- · Replies 42 ·
Graduate How Can You Derive the Lorentz Equations from Basic Assumptions?
- stevmg
- · Replies 2 ·
Graduate Geodetic precession and parallel transport
- nnn_bbb
- · Replies 14 ·
Graduate Frame Independance of acceleration ?
- Austin0
- · Replies 20 ·
Graduate How does SR cause the speed of light to be constant?
- kmarinas86
- · Replies 17 ·
Graduate Is a Black Hole the Most Dense Object in the Universe?
- aise0603
- · Replies 5 ·
Graduate Black holes and extended horizons
- Kokitsunemaru
- · Replies 2 ·
Undergrad Why cant you go faster than the speed of light?
- rrutter81
- · Replies 29 ·
Undergrad Time Slows Down in Refractive Materials?
- benmww
- · Replies 3 ·
Graduate Creating a FAQ: Questions about the Universe
- CosmicVoyager
- · Replies 2 ·
Graduate What are the properties of Minkowski spacetime geodesics?
- TrickyDicky
- · Replies 14 ·
Graduate Does relativistic mass induce gravity?
- Lee Wang
- · Replies 3 ·
Graduate Variational methods on Lagrangians (D'Inverno Chapter 11)
- TerryW
- · Replies 14 ·
Graduate Gravity and its effect on time
- TheIsland24
- · Replies 26 ·
Graduate Rotations in general relativity?
- hawkingfan
- · Replies 6 ·
Graduate Equivalence Principle question
- Buckethead
- · Replies 13 ·
Graduate Gauging Poincare to obtain Einstein gravity
- haushofer
- · Replies 3 ·
Graduate Make sure the Lagrangian symmetry？
- centry57
- · Replies 3 ·
Undergrad Where Does the Energy That Produces Gravity Come From?
- Vago Vent
- · Replies 6 ·
Graduate Why Do Objects Gain Mass at High Speeds and Seek Minimum Energy?
- oneat
- · Replies 2 ·
Graduate How can general relativity be used to calculate quantitative answers?
- mt8891
- · Replies 2 ·
Graduate Clock in isotropic gravitational field
- Calimero
- · Replies 10 ·
Graduate Trying to understand GR and density
- diagopod
- · Replies 13 ·
Graduate Question: Does and/or Can Gravity exist indepent of objects?
- linda McHenry
- · Replies 56 ·
Graduate Could Time Be a Tiny Curled-Up Dimension in String Theory?
- mjones32
- · Replies 25 ·
Graduate Cumulative expansion based on H0 since T = 0
- omnius
- · Replies 14 ·
Graduate Schwarzschild metric as induced metric
- paweld
- · Replies 3 ·
High School Can You Stand Still in Time Without Movement in Space?
- Hano34
- · Replies 6 ·
Graduate Do Photons Have Mass? Confused Student Seeks Answers
- Tach
- · Replies 86 ·
Graduate Is Circular Space Contraction Due to Relativity or a Classical Effect?
- JHUK
- · Replies 18 ·
Undergrad Einstein's Postulates: Origin of Ideas
- fys iks!
- · Replies 11 ·
Graduate Stability of relativistic double star system
- 01030312
- · Replies 6 ·
Graduate Black Holes & Time: Literal or Figurative?
- Beprepared
- · Replies 2 ·
Graduate Can Einstein's equations fully explain gravitational anomalies in galaxies?
- TrickyDicky
- · Replies 1 ·
Graduate Proof of the non-existence of ether
- Lakshya
- · Replies 19 ·
Graduate Timelike vs. null vs. spacelike four-current
- djy
- · Replies 6 ·
Graduate Is Minkowski Metric a Constant Riemann Metric in Finsler Geometry?
- xlzhang0910
- · Replies 2 ·
Graduate Explaining Mercury's Precession: Understanding the Role of General Relativity
- TrickyDicky
- · Replies 2 ·
Undergrad What happens if we cut this rope off?
- Desiree
- · Replies 20 ·
Graduate Exploring Historical Context of GR Predicted Gravitational Redshift
- stevenb
- · Replies 3 ·
Graduate Understanding Angular Momentum in Space | SR/GR and Centrifugal Force Explained
- Topher925
- · Replies 12 ·
Graduate Constancy of the speed of light (locally)
- Passionflower
- · Replies 7 ·
Graduate Heuristic approach to the Schwarzschild geometry - Accident of deeper meaning?
- Passionflower
- · Replies 12 ·
Graduate Challenging the Role of Photons in Explaining Light's Particle Behavior
- Faradave
- · Replies 62 ·
Graduate Is this a paradox in Special Relativity?
- Shackleford
- · Replies 38 ·
Graduate Derivation of Thomas Precession formula
- arroy_0205
- · Replies 1 ·
Graduate Curved Space-Time and the Speed of Light
- Anamitra
- · Replies 52 ·
Graduate Experimental verification of GR: Light bending
- Passionflower
- · Replies 36 ·
Graduate What is the role of Lie algebras in physics and differential equations?
- qiuhd
- · Replies 9 ·
Graduate Metric, connection, curvature oh my
- Living_Dog
- · Replies 16 ·
Graduate The 14 postulates of Special Relativity
- grav-universe
- · Replies 12 ·
Graduate Gravity: Constant or Increasing?
- azice
- · Replies 1 ·
Undergrad Is Mass Relative to the Observer?
- Mr.Illusion
- · Replies 14 ·
Graduate Space traveler and time dilation
- andyp2010
- · Replies 79 ·
Graduate How come we say space and time when it should be space=time. You can
- binbots
- · Replies 12 ·
Graduate Gravity time dilation in the Earth?
- Artlav
- · Replies 13 ·
Graduate Will LHC measure gravitational waves?
- Praxisseiz
- · Replies 6 ·
Graduate Another what if Question concerning gravity
- mcjosep
- · Replies 8 ·
Graduate Can Adding Spin to a Black Hole Create a Naked Singularity?
- JustinLevy
- · Replies 7 ·
Graduate Confusion with curved space analogies
- DragonPetter
- · Replies 3 ·
Graduate Kerr metric derivation (Adler, Bazin & Schiffer)
- seanjadson
- · Replies 1 ·
Graduate What ‘Something is conserved’ means in curved spacetime?
- Dmitry67
- · Replies 13 ·
Graduate Question about relationship between quantum/relativistic physics
- CptPlanet
- · Replies 3 ·
Graduate Length Contraction (Dilation?)
- skycastlefish
- · Replies 2 ·
Graduate What is the physical significance of the energy triangle in particle physics?
- Carolina Joe
- · Replies 13 ·
Graduate Can a Vanishing Ricci Tensor Prove Flat Space in Dimensions Higher than Three?
- Troponin
- · Replies 7 ·
Undergrad E=mc2 and Postulates to prove it
- Hallale
- · Replies 8 ·
Graduate What is the beggining of space time?
- phy_freak
- · Replies 2 ·
Graduate Does moving through spacetime affect our perception of time and mass?
- Paul77
- · Replies 5 ·
Graduate Fletcher's Paradox - Lynds' Resolution or not?
- Talanic
- · Replies 2 ·
Graduate Motion in space due to space-time curvature
- cosmogrl
- · Replies 14 ·
Graduate Please explain General Relativity to me
- Jocko Homo
- · Replies 19 ·
Graduate Drop a charge in a neutral black hole
- TeTeC
- · Replies 7 ·
Graduate Speed Constancy of Light Implication
- jaketodd
- · Replies 5 ·
Graduate Can one make inferences about what is inside a Black Hole?
- Craine
- · Replies 6 ·
Undergrad Assignment of Variables Help | Speed Addition Eqn Explained
- polishdude20
- · Replies 2 ·
Graduate Entropy and Black Holes: Understanding the Second Law of Thermodynamics
- jmcmahon
- · Replies 1 ·
Undergrad Angular momentum and the twin paradox
- DARKSYDE
- · Replies 3 ·
Graduate Finding Ricci Scalar Constant Nonzero Line Elements
- alejandrito29
- · Replies 4 ·
Graduate Understanding 4-Momentum: Basics, Interpretation, and Conservation
- Jerbearrrrrr
- · Replies 7 ·
Graduate What Is Our Time Relative to Universe's Fastest: Big Bang?
- lufbrajames
- · Replies 23 ·
Graduate Question on Time | Hierarchy of Space & Time
- nuke24
- · Replies 1 ·
Graduate Why is energy-momentum tensor Lorentz invariant?
- Bibipandi
- · Replies 9 ·
Graduate Could the Twin Paradox Really Have Four Solutions That Sum to Zero?
- billbray
- · Replies 6 ·
Graduate Local curvature of surface just outside Schwarzschild radius
- Jonathan Scott
- · Replies 15 ·