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 Travelling faster than speed of light
- shivakumar06
- · Replies 2 ·
Graduate Can the Alcubierre Drive Work Without Exotic Matter?
- TimDubya
- · Replies 5 ·
Graduate Does Gravity Swirl? Why? Researching the Truth
- SuperM4ssive
- · Replies 5 ·
Graduate LHC and partical decay - time question -
- uperkurk
- · Replies 21 ·
Undergrad Difference between the special and general relativity
- dido28
- · Replies 14 ·
Undergrad What's the difference between Lorentz factor for frames and for particles?
- BomboshMan
- · Replies 1 ·
Graduate Can Two Different Coordinate Systems Explain the Zero Relative Speed of Light?
- penomade
- · Replies 25 ·
Graduate Three dimensional gravity paradox
- madsquid
- · Replies 13 ·
Graduate Quantum gravity - Planck's constant as a scalar field?
- soothsayer
- · Replies 5 ·
Graduate How Does the Topology of Spacetimes Influence the Structure of Curved Manifolds?
- kevinferreira
- · Replies 110 ·
Undergrad When moving at the speed of light time stops
- eyad-996
- · Replies 85 ·
Graduate Killing vectors and Geodesic equations for the Schwarschild metric.
- silverwhale
- · Replies 10 ·
Undergrad Why is Time DILATION Called Time DILATION?
- Artyvr
- · Replies 40 ·
Graduate Is mass properly defined in general relativity?
- arindamsinha
- · Replies 12 ·
Graduate Rotating Flat Spacetime in Minkowski Metric
- parsikoo
- · Replies 3 ·
Graduate IYPT question on gravity wells and usage of elastic space.
- vishnu manoj
- · Replies 4 ·
Graduate Tensors Notation - Summation Convention - meaning of (a_ij)*(a_ij)
- metalrose
- · Replies 5 ·
Graduate Issue with deriving the Lorentz Factor
- guillefix
- · Replies 10 ·
Graduate Direct Measurement of Gravitational Wave Velocity
- chill_factor
- · Replies 16 ·
Graduate Finding v(t) at high speeds with F constant
- James Brady
- · Replies 12 ·
Undergrad When is gravitational potential zero but the field is nonzero?
- Vineeth T
- · Replies 63 ·
Graduate What is the stress-energy-momentum tensor and its role in general relativity?
- kevinferreira
- · Replies 36 ·
Graduate What is the Superpotential Tensor in Teleparallel Gravity?
- Worldline
- · Replies 2 ·
Graduate Logic of GR as mathematically derived
- grav-universe
- · Replies 41 ·
Graduate Understanding why Einstein found Maxwell's electrodynamics not relativistic
- GregAshmore
- · Replies 36 ·
Graduate The Energy-Momentum Tensor
- agostino981
- · Replies 4 ·
Graduate Relativity of Simultaneity concept
- Aniket1
- · Replies 20 ·
Undergrad Does My Wrist Watch Physically Beat Slower?
- Kingfire
- · Replies 96 ·
Graduate Parallel transporting of a vector in curved space
- say_cheese
- · Replies 17 ·
Graduate Area of event horizon and irreversible mass of Kerr black hole
- ck99
- · Replies 1 ·
Graduate Gravitational time dilation and special relativity time dilation
- yakmastermax
- · Replies 9 ·
Graduate Deriving relativistic mass from Resnick and Halliday equation 3-4a
- DavidCantwell
- · Replies 13 ·
Graduate Can Time Dilation Make Earth Appear to Speed Up During a Twin Paradox Scenario?
- Tomahoc
- · Replies 7 ·
Graduate Equivalence Principle and Gravity
- schaefera
- · Replies 7 ·
Graduate Is Brian Cox right to claim that Gravity is a strong force for large masses?
- cdux
- · Replies 14 ·
Graduate Does SR preserve the direction of light?
- jk22
- · Replies 2 ·
Undergrad Do Charged Particles Exhibit Stronger Gravitational Fields?
- quantumfoam
- · Replies 36 ·
Graduate How does mass gain at high velocities affect acceleration and inertia?
- DiracPool
- · Replies 23 ·
Graduate Computing 3D distances from RA, Dec and redshift
- Madster
- · Replies 6 ·
Undergrad Why Does Space Contract When Approaching the Speed of Light?
- Tommy1995
- · Replies 17 ·
Graduate Theory of Relativity, a poor name?
- Tomahoc
- · Replies 9 ·
Graduate Can Something Travel Faster Than Light in Different Frames of Reference?
- Drake711
- · Replies 8 ·
Graduate Find tetrad component from metric
- Worldline
- · Replies 5 ·
Graduate Black Holes - the two points of view.
- Mike Holland
- · Replies 382 ·
Graduate From field equation to equation of motion
- Madster
- · Replies 12 ·
Graduate Why preferred frames in BM can't synchronize signals across different reference frames
- Tomahoc
- · Replies 13 ·
Graduate Equation of state in gravity vs microphysics
- Jip
- · Replies 11 ·
Graduate Empirical meaning of relativity in the context of QM
- bobcat321
- · Replies 4 ·
Graduate Why is general relativity better than Newton's gravity?
- DiracPool
- · Replies 29 ·
Graduate Einstein-Hilbert term and mass, gravity
- Tomahoc
- · Replies 5 ·
Graduate Does the Higgs field carry gravity instead of a graviton?
- Mordred
- · Replies 12 ·
Graduate Can space expand faster than light without a central observer?
- cdux
- · Replies 20 ·
Undergrad Hafele and Keating time dilation question
- Buckethead
- · Replies 29 ·
Graduate How can the equation E^2=(mc^2)^2+(pc)^2 be proven?
- avcireis
- · Replies 8 ·
Graduate Physical explanation of velocity time dilation
- arindamsinha
- · Replies 14 ·
Graduate Could Quantum Geons Achieve Stability Like Bohr Atoms?
- johne1618
- · Replies 2 ·
Graduate Quantum wave equations in curved space
- FunkyDwarf
- · Replies 14 ·
Graduate Can we describe the physics of a photon in an inertial reference frame?
- chwie
- · Replies 16 ·
Graduate Why does Person B wait longer if Person A travels faster to a nearby planet?
- Semifaded
- · Replies 127 ·
Roy Kerr awarded Einstein Medal
- cosmik debris
- · Replies 6 ·
Undergrad Gravity and ideas of how we can effect it on earth
- ChangingRules
- · Replies 3 ·
Graduate Centrifugal Acceleration GR: Formula for .8c, 1m Radius
- grav-universe
- · Replies 2 ·
Graduate Is time quantum at the microscopic level?
- SinghRP
- · Replies 29 ·
Graduate Second order expansion of metric in free-fall
- InsertName
- · Replies 1 ·
Graduate Which direction does boosted spin point?
- Zoot
- · Replies 11 ·
Graduate Is dτ Invariant Under Transformations Beyond Lorentz in Special Relativity?
- friend
- · Replies 36 ·
Graduate How Does the Twin Paradox Change With Beacons?
- dwlink
- · Replies 3 ·
Undergrad Is Mass a Form of Energy According to E = mc²?
- cdux
- · Replies 4 ·
Graduate A thought experiment on relativistic Electrostatics
- vinven7
- · Replies 3 ·
Graduate Overlapping observable universes
- Warp
- · Replies 27 ·
Graduate Surface gravity calculation from Carroll's textbook, where's my error?
- hjq1990
- · Replies 1 ·
Graduate Angled light path in moving clock
- phyti
- · Replies 11 ·
Graduate Acceleration in SR makes it equivalent to GR?
- arindamsinha
- · Replies 49 ·
Graduate Lenght Contractions in Inertial Reference Frames
- smm
- · Replies 6 ·
Graduate Has relativity been proved wrong?
- KeplerJunior
- · Replies 9 ·
Graduate Does the wave equation for the 4-potential prove Maxwell's equations are covariant?
- martindrech
- · Replies 3 ·
Graduate Coordinate Tetrads: Other than Cartesian?
- Worldline
- · Replies 2 ·
Graduate Can inertial reference frame have different sizes at least in theory?
- smm
- · Replies 29 ·
Graduate Time dilation in relativity of simultaneity related to twin paradox
- timpeac
- · Replies 7 ·
Graduate Gravity vs. infinitely rigid bar
- Karl Coryat
- · Replies 4 ·
High School High Velocities Through Portals: Escape Velocity Achieved
- Vodkacannon
- · Replies 3 ·
Undergrad Time of acceleration dissipation
- whosapopstar?
- · Replies 21 ·
Undergrad What reference frame is used to calculate the age of the universe?
- Vineeth T
- · Replies 11 ·
Graduate The first postulate of relativity
- metalrose
- · Replies 29 ·
Graduate Synchronized Clocks in Frames boosted by Acceleration
- Jorrie
- · Replies 49 ·
Graduate When accelerating at high %c, can apparent velocites exceed c?
- BitWiz
- · Replies 24 ·
Graduate How does general covariance generalize the relativity principle?
- zonde
- · Replies 98 ·
Graduate Mathematically precise formulation of Ehlers-Geren-Sachs theorem
- nick41
- · Replies 1 ·
High School Wavelength Speed: 10nm vs 1mm - Does UV Travel Faster?
- Fonzi03
- · Replies 2 ·
Graduate Can light serve as a universal reference frame?
- aayushgsa
- · Replies 4 ·
Graduate Can Tachyons Enable Messages to the Past?
- putongren
- · Replies 2 ·
Graduate Is a black hole's mass zero according to a distant observer?
- johne1618
- · Replies 3 ·
Graduate Deriving the Metric from the Energy-Momentum Tensor
- Airsteve0
- · Replies 24 ·
Graduate How can doppler effect occur when c is indepedent of motion?
- k!rl
- · Replies 4 ·
Undergrad How to explain Einstein's Special theory of Relativity.
- Lochlan.H
- · Replies 135 ·
Graduate Why Is Thomas Precession Critical in General Relativity Calculations?
- WannabeNewton
- · Replies 3 ·
Graduate Speed of light, and path of travel, in distorted time-space
- San K
- · Replies 2 ·
Undergrad Can a nuclear bomb detonated from orbit actually destroy the Earth?
- cooleggyh
- · Replies 12 ·
Graduate Why do we say the object slows down rather than the observer speeds up in time dilation?
- coktail
- · Replies 20 ·
Graduate Is the higgs field required to have space-time warping?
- cdux
- · Replies 9 ·