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 Some questions about the derivation steps in the Gravitational deflection of light section in Schutz
- MathematicalPhysicist
- · Replies 2 ·
High School How do we know what would happen if time reversed?
- olamosey
- · Replies 1 ·
High School Derive Special Relativity: Alternative Paths
- user_12345
- · Replies 7 ·
Graduate Can the geodesic equation be derived from the EFE in a certain limit?
- john baez
- · Replies 40 ·
High School What is the distance at which gravity and the cosmological force are equal?
- J O Linton
- · Replies 46 ·
Undergrad Equivalence principle question
- mucker
- · Replies 36 ·
Undergrad Position Vector in Curved Space Time: Explained
- NSRG
- · Replies 8 ·
High School Doppler Shift of Neutron: Energy & Momentum
- J O Linton
- · Replies 11 ·
High School Cosmological Red Shift in a Perfectly Reflecting Box
- J O Linton
- · Replies 132 ·
High School How Do Points M and O' Move Relative to Point O in Space and Time?
- ilasus
- · Replies 25 ·
High School Faster than speed of light due to time dilation?
- Drizy
- · Replies 27 ·
Undergrad Gravity at Schwarzschild Radius of a Black Hole
- Roberto Pavani
- · Replies 17 ·
Undergrad Another interpretation of Lorentz transformations
- ilasus
- · Replies 53 ·
Undergrad Is Covariant Derivative Notation Misleading in Vector Calculus?
- stevendaryl
- · Replies 124 ·
High School Is Relativity the Evolution of Classical Physics?
- askor
- · Replies 9 ·
Undergrad Time Dilation: Variables Beyond Speed & Gravity?
- LightningInAJar
- · Replies 7 ·
Undergrad Left Invariant Metric: What I Don't Understand
- ergospherical
- · Replies 2 ·
High School Okay, so is Mach's principle true, or not?
- Paige_Turner
- · Replies 6 ·
Undergrad Discussing Interior Schwarzschild Proper Lengths & Gaussian Curvature
- D.S.Beyer
- · Replies 2 ·
Undergrad Gravity: Introduction to Einstein's General Relativity
- marco_shaw
- · Replies 1 ·
Undergrad A short derivation of the relativistic forms of energy and momentum
- stevendaryl
- · Replies 36 ·
Undergrad Wavelength of Light Ray Affected by Gravity
- GeniVasc
- · Replies 7 ·
High School Need to Check GR Beliefs? Integrity Filter Here!
- Paige_Turner
- · Replies 27 ·
High School Why Does Mass Pull on Other Stuff?
- Paige_Turner
- · Replies 15 ·
Undergrad How do forces change with speed?
- Hyperspaced
- · Replies 3 ·
High School Light Speed Traveling: Cosmic Background Radiation Effects
- David Lewis
- · Replies 9 ·
High School Gravitational Lensing: Refraction or Something Else?
- Paige_Turner
- · Replies 4 ·
Undergrad Derive Escape Velocity GR: Source for Schwarzschild Metric
- snoopies622
- · Replies 7 ·
High School Energy & Pendulums: Is Negative Energy Real?
- Paige_Turner
- · Replies 2 ·
Undergrad Negative Distance Metric: Elapsed Time & Space-Time Interval
- Paige_Turner
- · Replies 14 ·
Undergrad If gravity is not a force, what is holding us down?
- sawer
- · Replies 61 ·
High School MEGA Drive: Jim Woodward's Propulsion System, Real or Fiction?
- Randy Subers
- · Replies 8 ·
Undergrad Uncovering a Decent Proof of E=mc^2
- George Keeling
- · Replies 14 ·
Undergrad Calculating Covariant Derivative of Riemann Tensor in Riemann Normal Coordinates
- minits
- · Replies 5 ·
High School Explanation of light speed limit
- Thecla
- · Replies 9 ·
High School Time Dilation: Does Observer See Your Time Speed Up?
- AdvaitDhingra
- · Replies 10 ·
Undergrad Coordinate System for Minkowskian Spacetime Relative to Event
- Halc
- · Replies 8 ·
Undergrad General relativistic comparison to Newtonian physics
- Myslius
- · Replies 21 ·
Undergrad What is the confusion surrounding time as a coordinate in general relativity?
- AHSAN MUJTABA
- · Replies 23 ·
Graduate Essential Difference Between Crossable & Non-Crossable Event Horizons
- Bandersnatch
- · Replies 9 ·
Undergrad Stress-Energy of Star Collapsing into Black Hole
- timmdeeg
- · Replies 13 ·
Graduate Fluid Flow Symmetry: Showing $\pi_b G^b$ is Constant
- ergospherical
- · Replies 4 ·
Graduate Thermality & Nonthermality of Radiation in Curved Spacetimes
- bukhari
- · Replies 1 ·
Undergrad "Testing the black-hole area law with GW150914"
- robphy
- · Replies 0 ·
Undergrad Calculating Time Elapsed in Rocket Collision
- Abhishek11235
- · Replies 18 ·
Graduate Geodesic Expansion: Finding the $\theta_{\pm}$ Factor
- ergospherical
- · Replies 2 ·
High School Sine-Gordon model for better understanding of special relativity?
- Jarek 31
- · Replies 14 ·
Undergrad Electromagnetic Field & Space-Time: Relationship Explained
- crastinus
- · Replies 13 ·
Undergrad Gradient Energy: Definition & Classical Mechanics
- Haorong Wu
- · Replies 5 ·
Graduate Gravitational Quadrupole Formula: Polarization Tensor
- pervect
- · Replies 4 ·
High School What Drives the Acceleration of the Universe's Expansion?
- jeremyfiennes
- · Replies 6 ·
Undergrad Transforming Object Positions b/w Frames: A Procedure
- Killtech
- · Replies 12 ·
Undergrad Does the Topology of AdS4 Affect Global Hyperbolicity?
- ergospherical
- · Replies 5 ·
Undergrad The bending of starlight is twice the Newtonian prediction
- J O Linton
- · Replies 90 ·
Graduate Computing Null Geodesics in Schwarzschild Geometry
- stevendaryl
- · Replies 4 ·
Graduate Calculating Lie Derivatives for Tensors & Vectors
- Arman777
- · Replies 11 ·
Undergrad Light Clock Animation App: Find, Start & Feedback
- joekahr
- · Replies 2 ·
High School Time Dilation Effect: Corrections to Clocks on ISS
- saddlestone-man
- · Replies 5 ·
High School SR equation seems to depend on orientation of the 'light clock'
- bwana
- · Replies 65 ·
High School Is E=mc^2 a Bidirectional Equation in Physics?
- saddlestone-man
- · Replies 70 ·
Undergrad Does charging my phone increase its gravitational force?
- Ebi
- · Replies 3 ·
Undergrad Correlation vs. Causation: Knowing the Difference
- entropy1
- · Replies 28 ·
Undergrad Identifying Manifolds with Different Co-ordinates: Easy Solutions
- Will Learn
- · Replies 16 ·
Undergrad Find GR Equation: Collapsing Orbit & Gravitational Wave
- Buzz Bloom
- · Replies 6 ·
Undergrad GR: Can Units Tell You if Quantity is Covariant or Contravariant?
- Twigg
- · Replies 3 ·
High School What Is the Proper Time of the CMB and Its Implications?
- D.S.Beyer
- · Replies 9 ·
High School Time like spacetime interval, proper time, and time dilation
- Point Conception
- · Replies 37 ·
Graduate Kerr Metric Time Dilation Formula: Deriving Absolute Form
- Dukon
- · Replies 19 ·
Undergrad How Does the Twin Paradox Apply to Light and Sound Waves?
- Killtech
- · Replies 48 ·
Graduate Gravitational field of an infinite flat slab
- Ibix
- · Replies 14 ·
High School What Happens to Time and Space Near a Black Hole's Event Horizon?
- Roberto Pavani
- · Replies 3 ·
Graduate Finding Killing Vectors of FLRW Metric: Simple Equation?
- Arman777
- · Replies 12 ·
Undergrad C in a Vacuum: Evidence of Constant?
- pkc111
- · Replies 7 ·
Undergrad Boost Generators: Physical Meaning & Observable Quantities
- nicholas_eng
- · Replies 1 ·
Undergrad Leading Clocks Lag: Twin Paradox Explained
- Grasshopper
- · Replies 20 ·
Graduate Non-Linear Theory: Summation Meaningful in Einstein Gravitation?
- empdee4
- · Replies 15 ·
Undergrad Speed of EM & Mech Waves: Maxwell's Law Explained
- Barblorrane
- · Replies 1 ·
Undergrad Twin Paradox: Spacetime Physics Ch.4 & 202 Year Difference
- Office_Shredder
- · Replies 27 ·
High School I have a conceptual question about relative mass
- Victorifrj
- · Replies 41 ·
Undergrad Configuring Laws of Motion: Static/Dynamic
- Maniac_XOX
- · Replies 1 ·
Undergrad Could spacetime be non-orientable?
- Jarek 31
- · Replies 49 ·
Undergrad Summation notation and general relativity derivatives
- Maniac_XOX
- · Replies 38 ·
Undergrad Solving Proca Lagrangian w/ Extra Operator: Find Laws of Motion
- Maniac_XOX
- · Replies 44 ·
Undergrad Does Time Slow Down in a Deep Osmium Room?
- alpha_michi
- · Replies 31 ·
Undergrad Laws of Motion for New Lagrangian: Partial Differential Equations
- Maniac_XOX
- · Replies 11 ·
Undergrad Compute Length Contraction: Is ##l=1## a Possible Model?
- Office_Shredder
- · Replies 33 ·
High School Helium Balloon: Explaining Special Relativity Effects
- Freaky Fred
- · Replies 17 ·
Undergrad Lorentz Ether Theory: History & Explanation
- bhobba
- · Replies 1 ·
Undergrad Riemann Curvature: Understanding Parallel Transport on 1D Rings
- Narasoma
- · Replies 2 ·
Undergrad Metric: Proper Space vs Coordinate Space
- Haorong Wu
- · Replies 7 ·
High School Can Relativistic Effects Alter Thermodynamic Processes in Experiments?
- bwana
- · Replies 4 ·
Graduate Kerr Metric: Removing Singularity via Coordinate Transformation
- Arman777
- · Replies 1 ·
Undergrad If energy is relative, is the rest mass also relative?
- qnt200
- · Replies 36 ·
Graduate The gravitational constant measured by the smallest object
- exponent137
- · Replies 21 ·
Undergrad Are Tidal Forces Curvature of Space?
- Grasshopper
- · Replies 9 ·
High School What Happens If You Become Completely Still in Space?
- Nathan991
- · Replies 25 ·
High School How does special relativity apply to the rocket equation?
- greg_rack
- · Replies 30 ·
Undergrad Special Theory of Relativity & Conservation of Mass
- Sonuz
- · Replies 4 ·
Undergrad General relativity - covariant superconductivity, Meissner effect
- Maniac_XOX
- · Replies 7 ·
Undergrad Calculating the Area of an RN Event Horizon with Specific Heat Formula
- etotheipi
- · Replies 1 ·