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 Fermi-Walker: Showing Rotation in Plane of 4-Accel & 4-Vel
- kent davidge
- · Replies 7 ·
High School Traveling using space curvature
- Papo1111
- · Replies 23 ·
High School Speed of Light in a Medium: Explained
- Papo1111
- · Replies 3 ·
High School Does a gyroscope bend spacetime?
- nipoleon
- · Replies 21 ·
Undergrad Finding Most General Form of Rindler Coordinates
- kent davidge
- · Replies 4 ·
High School Understanding Entropy & Universe Expansion: A Beginner's Guide
- Keith Wright
- · Replies 7 ·
Graduate Extra Killing Vector Field in Kerr Spacetime?
- PeterDonis
- · Replies 4 ·
Undergrad Electromagnetic Curr. in Curved Spacetime: Questions Answered
- gerald V
- · Replies 12 ·
Graduate Flow as a fluid-orthogonal foliation
- Apashanka
- · Replies 11 ·
High School Star Lifespan Near Black Hole: Time Dilation & Energy
- neh4pres
- · Replies 1 ·
Undergrad Proper Acceleration: Why d^2x^α/dτ^2 is Not Ideal
- kent davidge
- · Replies 12 ·
Undergrad Maximally symmetric sub-manifold (2-sphere)
- Apashanka
- · Replies 25 ·
Undergrad On The Length of a Meter Stick
- DJ_Juggernaut
- · Replies 19 ·
Undergrad Geodesics in 4D Spacetime: An Overview
- Apashanka
- · Replies 9 ·
High School Time Dilation: Accelerating vs Inertial Frame
- Buckethead
- · Replies 5 ·
Undergrad How Does the Metric of a 4-D Spacetime Define Its Symmetry and Expansion?
- Apashanka
- · Replies 1 ·
Undergrad Measuring the Speed of Light: Time of Flight Experiments
- Sandeep T S
- · Replies 15 ·
High School Any interest in a spacetime diagram generator?
- Freixas
- · Replies 1 ·
High School General Relativity: Finding Info on Interpretation
- Cerenkov
- · Replies 5 ·
Undergrad Solving Special Relativity Problem w/ Two Spaceships
- universal2013
- · Replies 3 ·
Undergrad Connecting Geodesic Curves and the Covariant Derivative
- Apashanka
- · Replies 11 ·
Undergrad Conservation of energy-momentum (tensor)
- Apashanka
- · Replies 22 ·
Undergrad Spacetime Curvature: Eliptical Orbital Paths & Keppler Laws
- Osvaldo
- · Replies 5 ·
High School Big Rip Theory & Black Holes: Relativity Explained
- Surya Suresh
- · Replies 2 ·
Undergrad Covariant derivative of tangent vector for geodesic
- Apashanka
- · Replies 14 ·
Undergrad Implication of length contraction
- pixel
- · Replies 17 ·
Undergrad Is my reasoning about commutators of vectors right?
- JuanC97
- · Replies 3 ·
Undergrad Is there a zero-mass, vacuum Schwarzschild GR solution?
- fox26
- · Replies 27 ·
Undergrad Schwarzschild metric not dependent on time
- kent davidge
- · Replies 58 ·
Undergrad Contravariant Vector Transformation in Spherical Polar Coordinates
- Apashanka
- · Replies 13 ·
Undergrad Parallel transport of tangent vector....(geodesic)
- Apashanka
- · Replies 12 ·
Undergrad Perturbation to Flat Space Metric: Geodesic Equation
- Apashanka
- · Replies 6 ·
High School Solving an Integral on a Spherical Surface - Tips
- victorneto
- · Replies 1 ·
Graduate Riemann Tensor Notation Explained | Choquet-Bruhat GR
- Maddddd
- · Replies 1 ·
Undergrad Speed of Light Measured by Jupiter's Moons: Error 26%?
- Sandeep T S
- · Replies 6 ·
High School Rocket Sends Light to Mirror: Event A to Event C Diagram
- Point Conception
- · Replies 12 ·
High School Can event horizons cross for passing black holes at high speed
- deanbrown3d
- · Replies 24 ·
Undergrad Confusion about Simultaneous Events in Relativity
- Thecla
- · Replies 13 ·
Undergrad Bending of light - Newton vs. Einstein
- pixel
- · Replies 22 ·
High School Converting between frames of reference
- PleaseSpeakSlowly
- · Replies 19 ·
High School Newtonian vs. Relativistic momentum
- Davephaelon
- · Replies 19 ·
Undergrad Frame Dragging Effect vs Spin Orbit Coupling in GR
- cosmik debris
- · Replies 8 ·
Undergrad Schwarzschild: Energy Conservation at Finite r
- kent davidge
- · Replies 1 ·
High School Time Dilation Problem with Mesons
- NoahsArk
- · Replies 39 ·
Graduate Foliation of spacetime into spacelike hypersurfaces
- spaghetti3451
- · Replies 6 ·
Undergrad Inertial Ref: Can Light Photons Be a Privileged Frame?
- Opressor
- · Replies 9 ·
Undergrad Books on Spacetime Hypersurfaces & Foliations of Space Time
- kent davidge
- · Replies 2 ·
Undergrad Is Absolute Position Necessary to Understand Relativity?
- joshk
- · Replies 5 ·
Insights Solving Einstein's Field Equations in Maxima - Comments
- Ibix
- · Replies 4 ·
Undergrad Gamma in Brans-Dicke framework
- Apashanka
- · Replies 5 ·
Graduate Killing vectors corresponding to the Lorentz transformations
- wafelosek
- · Replies 6 ·
Undergrad Symmetric Connection: Does Torsion Vanish?
- kent davidge
- · Replies 3 ·
Undergrad What are the metric components in the Brans-Dicke action?
- Apashanka
- · Replies 14 ·
Undergrad GR: Electric & Magnetic Effects - Consequences
- Boltzman Oscillation
- · Replies 7 ·
Undergrad Einstein-Hilbert Action, Lagrangian Density & Vacuum Fields
- Apashanka
- · Replies 1 ·
Undergrad Relativistic mass and gravitational potential
- sha1000
- · Replies 6 ·
High School Presentation of mass as a physical quantity
- Buckethead
- · Replies 4 ·
Undergrad Acceleration of a relativistic particle
- kent davidge
- · Replies 7 ·
Undergrad Is this answer about Lorentz transforms correct?
- kent davidge
- · Replies 5 ·
High School Time Dilation and thermal motion
- sweet springs
- · Replies 18 ·
Undergrad Allowed fields in General Relativity
- kent davidge
- · Replies 14 ·
Undergrad Uniqueness theorems for black holes
- Max Green
- · Replies 12 ·
Undergrad Invariance of timelike Killing vector of Schwarzschild sol.
- TomServo
- · Replies 3 ·
Undergrad Can the Lorentz factor be modified for non-inertial frames?
- bwana
- · Replies 12 ·
High School Spacetime curvature due to acceleration causing gravity?
- Buckethead
- · Replies 41 ·
High School What is the relationship between time and 1D space?
- andrazg
- · Replies 12 ·
Undergrad Cosmological Constant Term in Einstein Equations
- kent davidge
- · Replies 2 ·
Undergrad General Relativity rocket puzzle
- PeterDonis
- · Replies 84 ·
Undergrad What happens to the energy lost by photons in gravity?
- Hugh de Launay
- · Replies 38 ·
High School Is the Space with Ricci Scalar Zero Flat?
- Apashanka
- · Replies 16 ·
Undergrad Gravitational wave interference
- roineust
- · Replies 9 ·
Undergrad Question about the limits of space contraction near light speed
- DarkMattrHole
- · Replies 10 ·
Undergrad Is Simultaneity in Einstein's Thought Experiment a Matter of Perspective?
- Jianping Zhang
- · Replies 22 ·
Undergrad Calculating Acceleration of Gravity w/ Geodesic Deviation: Troubleshooting
- Jim Hasty
- · Replies 22 ·
High School How did Einstein come up with the thought of a space fabric?
- Zack K
- · Replies 18 ·
Undergrad Legendre Transform: Momentum & Velocity
- redtree
- · Replies 2 ·
Undergrad Massive Particles in Sonic & Slow Light Black Holes
- luke m
- · Replies 2 ·
High School Impression of relative velocities
- jishnu
- · Replies 14 ·
Undergrad Photon Timelessness: Does It Exist?
- YASH AWasthi
- · Replies 27 ·
Undergrad Energy Density & Mass Density: Explained
- Leonardo Machado
- · Replies 2 ·
Undergrad About spacetime coordinate systems
- cianfa72
- · Replies 37 ·
Undergrad Any direct evidence of gravitational mass increase?
- hkyriazi
- · Replies 39 ·
Undergrad Speed of Light in Materials: Explained
- AndrewGRQTF
- · Replies 4 ·
High School "Spacetime Physics" by Taylor and Wheeler
- NoahsArk
- · Replies 32 ·
High School 4 four momentum energy component direction
- whatif
- · Replies 113 ·
Undergrad Falling electric dipole contradicts the equivalence principle?
- jcap
- · Replies 3 ·
Undergrad Why Are Maxwell's Equations Invariant Across Reference Frames?
- universal2013
- · Replies 11 ·
High School Solving the Kerr metric in the program Maxima
- exmarine
- · Replies 15 ·
Undergrad What does coupling mean in physics?
- luke m
- · Replies 5 ·
Undergrad Paradox: Rocket ship moving in a circle
- andrewpareles
- · Replies 12 ·
Undergrad Energy Tensor Gradients: ∂βTμυ
- dsaun777
- · Replies 5 ·
Undergrad Allowed transformations in General Relativity
- kent davidge
- · Replies 12 ·
Undergrad What do we mean when we say something transforms "under"....
- AndrewGRQTF
- · Replies 4 ·
High School What am I Missing Here? Play from 3:00
- skyshrimp
- · Replies 2 ·
High School Satellite Clocks: General & Special Relativity Time Variations
- Zack K
- · Replies 5 ·
Undergrad Gravitational Time Dilation: Radius & Clock Rate Variation Explained
- Zman
- · Replies 2 ·
Undergrad Does Special Relativity Deal with Non-Inertial Frames?
- Logic314
- · Replies 21 ·
High School Can we truly understand the concept of time?
- Levi Woods
- · Replies 42 ·
Undergrad Why Do Lorentz Transforms Look Like This?
- AndrewGRQTF
- · Replies 1 ·
High School Muons traveling to Earth, time dilation question
- Glenn G
- · Replies 7 ·