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 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 clarification
- Trojan666ru
- · Replies 39 ·
Graduate [Gravity in general relativity] I dont understand this help
- 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 Non-Inertial Frames: Understanding Geometric Structures
- 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 Mystery of the Moving Car: Solving the Speed Paradox
- 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 Are Time & Entropy the Same Natural Thing?
- faddishworm
- · Replies 17 ·
Graduate MTW Exercise 25.5 b) - killing vectors
- 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 QUESTION: Relativistic Doppler Effect & Special Relativity
- Shayne T
- · Replies 9 ·
Graduate Do Black Holes Outlive Everything Else in the Universe?
- Shayne T
- · Replies 2 ·
Graduate Bending of Light: General Relativity Explained
- shounakbhatta
- · Replies 8 ·
Undergrad Basic Findings of Special & General Relativity
- shounakbhatta
- · Replies 1 ·
Undergrad C FOR Loop Paradox: Unraveling the Mystery
- 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 The Lance Duel Paradox: Who Will Win?
- gatusso
- · Replies 34 ·
Graduate Black Hole & Wormhole: Questions Answered
- 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 Intuition behind the warp drive
- 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 What Are the True Nature and Meaning of Extra Dimensions?
- 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 Intuition of Geodesics: Visualizing Tangent & 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 Special Relativity: Time Intervals & Colocated Origins
- 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 Understanding the Twin Paradox: Time Dilation in Relativity
- Nikitin
- · Replies 11 ·
Graduate Does the cosmological constant 'require' energy?
- Herbascious J
- · Replies 7 ·
Undergrad Einstein's train thought experiment
- Nikitin
- · Replies 5 ·
Graduate GR Effects on Satellites in Free Fall: Resolving the Confusion
- Buckethead
- · Replies 32 ·
Graduate Units of spacetime in Minkowski metric
- nomadreid
- · Replies 54 ·
Graduate Understanding Spacetime Diagrams & Relativity
- rushikesh
- · Replies 20 ·
Graduate Understanding Doppler Shift for Light in Special Relativity
- SteveDC
- · Replies 3 ·
Graduate What is the problem with the Minkowski relationship in special relativity?
- John Hobson
- · Replies 4 ·
Graduate How is it that black holes can have angular momentum?
- serp777
- · Replies 6 ·
Undergrad Correct definition of time dilation
- suryanarayan
- · Replies 21 ·
Graduate How Does Time Differ for Observers in Relative Motion?
- Hepic
- · Replies 31 ·