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 Does Effective Inertia Relate to Mass and Energy in Special Relativity?
- rpthomps
- · Replies 9 ·
The book: Spacetime Physics (Taylor - Wheeler) - missing solutions
- tomas.teicher
- · Replies 1 ·
Graduate Time Dilation Effects of Hypothetical Zero Gravity Pocket
- NMLevesque
- · Replies 14 ·
Graduate Gravitational wave solution boundary conditions
- center o bass
- · Replies 2 ·
Undergrad Velocities of objects moving towards and away from each other
- ilikescience94
- · Replies 3 ·
Graduate Lorentz boost matrix in terms of four-velocity
- CarlosMarti12
- · Replies 6 ·
Graduate Why is the 4-dot product of Minkowski force and 4-velocity zero if qE·u equals power?
- kakolukia786
- · Replies 3 ·
Undergrad Why does light take a diagonal path to the transverse mirror in Michelson-Morley?
- arka.sharma
- · Replies 25 ·
Graduate Finding the function from ds=[2/(1-r^2)]√ (dr^2+(rd∅)^2)
- nafizamin
- · Replies 6 ·
Graduate Does an object achieve ∞ mass or 0 mass at the speed of light?
- Remon
- · Replies 18 ·
Graduate How to Derive the Tensor Field U_{acbd} from T_{ab} in Wald's Problem?
- tommyj
- · Replies 1 ·
Graduate Time dilation and uniform circular motion
- Sigma057
- · Replies 10 ·
Graduate How does this affect the length contraction paradox?
- Fantasist
- · Replies 67 ·
Undergrad When Should You Use Relativistic Equations Instead of Classical Ones?
- Blackthorn
- · Replies 3 ·
Graduate Linearized Gravity and the smalness of the pertubation
- center o bass
- · Replies 1 ·
Graduate Why the Minkowski inner product is not positive-definite?
- sciencegem
- · Replies 3 ·
Graduate A positively curved visualization of gravity?
- Karl Coryat
- · Replies 18 ·
Graduate Why do all measurements of neutrino speed show a positive delta t?
- Niceperson27
- · Replies 6 ·
Graduate What is the stress-energy tensor used for?
- Rena Cray
- · Replies 13 ·
Graduate How do we know that a photon is massless?
- Trojan666ru
- · Replies 10 ·
Graduate CPT and Diffeomorphism Invariance
- Rena Cray
- · Replies 18 ·
Graduate Spherical GR dust shell with vacuum inside and outside
- yuiop
- · Replies 7 ·
Graduate Tensor Contraction: Is it Always Information Subset?
- vaibhavtewari
- · Replies 4 ·
Graduate Energy shifts in general relativity
- greypilgrim
- · Replies 28 ·
Undergrad Does the Speed of Light Change When Measured from the Sun?
- rushikesh
- · Replies 2 ·
Graduate How Does Size Affect Time in Thought Experiments?
- akshay848
- · Replies 8 ·
Why does gravitational wave research get DoD funding?
- TomServo
- · Replies 7 ·
Graduate Derivation of energy-stress tensor in GR
- simoncks
- · Replies 8 ·
Graduate Length contraction of moving rods and their separation
- Trojan666ru
- · Replies 39 ·
Graduate Why do stationary objects accelerate toward each other in curved spacetime?
- thetexan
- · Replies 2 ·
Graduate How Do Lorentz Group Generators Comply with Their Commutation Relations?
- spookyfish
- · Replies 7 ·
Graduate Constant time-like vector fields-Maxwell's equations
- WannabeNewton
- · Replies 8 ·
Graduate Derivation of Schwarzschild radius from escape velocity
- greypilgrim
- · Replies 2 ·
Graduate Why can't coordinate transformations have all zero partial derivatives?
- tommyj
- · Replies 16 ·
Graduate Are There Other Fields in General Relativity Besides the Gravitational Field?
- Quarlep
- · Replies 2 ·
Graduate Second order geodesic equation.
- ozone
- · Replies 7 ·
Graduate If a car travels at 0.5c and turns on its headlights, what speed do I measure for the car
- choran
- · Replies 44 ·
Graduate Do you think Relativity theory can explain all the paradoxes?
- Trojan666ru
- · Replies 60 ·
Graduate What is the Fine-Structure Constant and its Relation to Gravity?
- rubi32
- · Replies 40 ·
Graduate Teleportation violates conservation of energy?
- Superposed_Cat
- · Replies 1 ·
Graduate Inconsistency in formulas for relativistic energy
- Nikitin
- · Replies 9 ·
Graduate Clock of Observers: Who Sees Whose Clock Running Slower?
- Hepic
- · Replies 7 ·
Undergrad Length Contraction oes the object or travel distance shrink?
- Superposed_Cat
- · Replies 8 ·
Graduate Is time a fundamental feature or a human invention to model change?
- faddishworm
- · Replies 17 ·
Graduate Poisson bracket expansion for MTW exercise 25.5b
- zn5252
- · Replies 9 ·
Undergrad What is the use of time dilation.
- Brucezhou
- · Replies 2 ·
Graduate Why Aren't Event Horizons Bright?
- EskWIRED
- · Replies 10 ·
Graduate Time-Indep General Relativity: Can Someone Help Understand Equation (10)?
- benjamin_cro
- · Replies 1 ·
Graduate E/M Constant: Mass Conversion in Universe
- nil1996
- · Replies 5 ·
Graduate General relativity and invariant mass
- Rena Cray
- · Replies 18 ·
Graduate Why the curvature of spacetime is related to momentum?
- Brucezhou
- · Replies 4 ·
Graduate Problem caused by length contraction and relativity and personal expla
- Brucezhou
- · Replies 9 ·
Graduate Is SR really internally consistent?
- choran
- · Replies 55 ·
Graduate Does the curvature of spacetime have a unit?
- JF131
- · Replies 10 ·
Graduate Clocks inside a cavity inside a collapsing dust shell
- yuiop
- · Replies 14 ·
Graduate Einstein's Mass-Energy Relation
- curious bishal
- · Replies 5 ·
Graduate Lorentz Transformation and Time Dilation
- SteveDC
- · Replies 3 ·
Graduate SPECIAL relativity's effect on gravity
- mapsread
- · Replies 10 ·
Graduate Negative Velocities in Lorentz Transformations
- TheConfusedOne
- · Replies 4 ·
Graduate Explain Where My Argument (MTW Ex 4.10) is Going Wrong - TerryW
- TerryW
- · Replies 1 ·
Graduate Can information escape a blackhole?
- ian_dsouza
- · Replies 14 ·
Graduate Combining gravitational time dilation components.
- yuiop
- · Replies 19 ·
Graduate Thought Experiment: The flow of time at different parts of the univers
- Shayne T
- · Replies 11 ·
Graduate How can light Doppler shift if its speed is constant for all observers?
- Shayne T
- · Replies 9 ·
Graduate Do Black Holes Outlive Everything Else in the Universe?
- Shayne T
- · Replies 2 ·
Graduate Does light bend because spacetime is curved or because there's no force on photons?
- shounakbhatta
- · Replies 8 ·
Undergrad What are the basic findings of special and general relativity?
- shounakbhatta
- · Replies 1 ·
Undergrad Why doesn't a C for loop object fit?
- Myslius
- · Replies 11 ·
Graduate Calculating gravity with high precision ?
- Fermifaq
- · Replies 20 ·
Graduate Do length contraction affects accelerating objects?
- Trojan666ru
- · Replies 8 ·
Graduate The aging effect with regard to high speed travel
- geordief
- · Replies 17 ·
Undergrad Relativistic length contraction with two approaching lances at high speed
- gatusso
- · Replies 34 ·
Graduate What happens if a black hole or wormhole passes through a wormhole?
- Superposed_Cat
- · Replies 2 ·
High School Gravity: Not Proportional to Inverse Square?
- pantheid
- · Replies 1 ·
Graduate Following a light ray through a curved spacetime.
- Lavabug
- · Replies 28 ·
Graduate Ehrenfest paradox debate, how does a pinning disk look like?
- Trojan666ru
- · Replies 1 ·
Graduate What Happens to a Pole Spinning Near Light Speed?
- AbyssalVortex
- · Replies 4 ·
Undergrad Does Light Speed Up Near Black Holes?
- jamesbolt
- · Replies 10 ·
Graduate Why does warping space let a ship reach its destination faster?
- Ironmaggot
- · Replies 4 ·
Undergrad What is the simplest way to explain general and/or special relativity?
- Remon
- · Replies 24 ·
Graduate Is time and space moving through us? Do black holes rotation create time?
- steve8miller
- · Replies 11 ·
Graduate Similar to the Einstein train experiment
- Whatifitaint
- · Replies 48 ·
Graduate Special relativity and quantum mech
- bs vasanth
- · Replies 3 ·
Graduate Space-Time: Does Faster Mass Increase Curvature?
- Ramone420
- · Replies 9 ·
Graduate What is the proof/validity of Born rigidity in Special relativity?
- Trojan666ru
- · Replies 52 ·
Undergrad How we know which mass would be heavier.
- Twich
- · Replies 6 ·
Graduate Are extra dimensions time, string theory, or geometric?
- MartianVision
- · Replies 2 ·
Graduate Is ADM Energy Equivalent to Komar Mass in All Spacetimes?
- atyy
- · Replies 3 ·
Graduate What will show scale inside rocket?
- Maciej Ma
- · Replies 3 ·
Graduate Relativity and terminal velocity
- mrcotton
- · Replies 5 ·
Graduate Why do geodesic tangent vectors match parallel transported vectors?
- sigma_
- · Replies 11 ·
Graduate Quastions about Zee's book EGR in a nutshell
- sergiokapone
- · Replies 12 ·
Undergrad Is the Speed of Light Truly Constant in Deep Space?
- Twich
- · Replies 1 ·
Graduate Time interval between light pulses in two reference frames
- Whatifitaint
- · Replies 8 ·
Graduate Elementary Explanation of Unruh Effect
- stevendaryl
- · Replies 8 ·
Graduate Gravity distortion at the center of a massive object?
- darkhorror
- · Replies 33 ·
Graduate General relativity - Conceptual question
- shounakbhatta
- · Replies 6 ·
Graduate Spacetime/Proper Length
- Mikeal
- · Replies 14 ·
Undergrad GRT: Can Identical Objects Orbit Center of Gravity?
- exmarine
- · Replies 6 ·
Graduate Why does time dilation seem symmetric between observers?
- Nikitin
- · Replies 11 ·