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 Basic question about TD and LC
- mananvpanchal
- · Replies 10 ·
Graduate Do Observers Experience Black Hole Event Horizons Differently?
- Gio83
- · Replies 11 ·
Graduate Question on General Relativity
- eoghan
- · Replies 2 ·
Graduate Relativity: The General and Special Theory by Albert Einstein
- SkyWatcher
- · Replies 7 ·
Graduate Light speed spaceship time travel conundrum
- Jebus HChrist
- · Replies 39 ·
Graduate What does symmetry in GR mean and where does it lead?
- Naty1
- · Replies 23 ·
New Test of Relativity: Settling the Debate with an Experiment Tonight
- Jimmy Snyder
- · Replies 11 ·
Graduate Thoughts on electrically charged black holes
- mrspeedybob
- · Replies 29 ·
Graduate Applying time dilation and length contraction to measure parralel c
- salvestrom
- · Replies 10 ·
Graduate Orbits of a Killing vector field
- praharmitra
- · Replies 4 ·
Graduate GUT Unifying Underlying Fields: Is It Beyond the Standard Model?
- jnorman
- · Replies 1 ·
Graduate What is the role of the einbein in BRST quantization?
- selfAdjoint
- · Replies 14 ·
Graduate What kind of tensor is the electromagnetic field tensor?
- center o bass
- · Replies 3 ·
Graduate Conserved quantities in the Doran Metric?
- m4r35n357
- · Replies 9 ·
Graduate Value of g near a black hole (re-visited)
- pawprint
- · Replies 96 ·
Graduate Why does my four-velocity calculation give γ(1, u/c) instead of γ(c, u)?
- Wox
- · Replies 19 ·
Undergrad Can Photons Really Have Zero Momentum and Energy?
- suchal
- · Replies 2 ·
Graduate 3+1 slicing of spacetime question
- Matterwave
- · Replies 12 ·
Graduate Is Newtonian spacetime flat too?
- waterfall
- · Replies 10 ·
Graduate How Do Mass Constraints Affect Space-Time Diagrams in the De Sitter Light Cone?
- Cluelessluke
- · Replies 1 ·
Graduate Two tidally locked stars orbiting their common center
- timeanalyser
- · Replies 11 ·
Graduate Closing speed and length contraction paradoxes
- Seanner
- · Replies 17 ·
Graduate What happens in the restframe with lightsource?
- faen
- · Replies 90 ·
Graduate Are Geodesics and Projectile Trajectories Equivalent in Curved Space-Time?
- Black Integra
- · Replies 8 ·
High School The speed of light. What's the story, really?
- Homesick345
- · Replies 72 ·
Graduate About the principle of relativity
- ENDLESSYOU
- · Replies 15 ·
Undergrad Magnitude of a velocity vector with special relativity
- Froskoy
- · Replies 1 ·
Graduate Is there a new objection to wormholes based on information loss?
- sshai45
- · Replies 2 ·
Undergrad Atomic clock used in spaceships
- AnilML
- · Replies 9 ·
Graduate Lorentz Transform Derivation questions
- kwestion
- · Replies 1 ·
Graduate How does the metric tensor differ between special and general relativity?
- roya
- · Replies 3 ·
Graduate What are the Christoffel symbols for the Schwarzschild metric?
- Zeron_X25
- · Replies 10 ·
Graduate How can we define the induced metric on a brane?
- atrahasis
- · Replies 3 ·
Graduate What's wrong with these pictures?
- nitsuj
- · Replies 49 ·
Undergrad Time & Mass: Newbie Questions from a Spaceship Observer
- Fyreth
- · Replies 2 ·
Graduate Does Inflation Affect the Perception of Time in Expanding Space?
- dooces
- · Replies 8 ·
Graduate Hawking Radiation and the Hologram Theory
- PrestonFM
- · Replies 5 ·
Graduate Raychaudhuri equation for shear
- julian
- · Replies 4 ·
Graduate The velocity of light in the medium
- ENDLESSYOU
- · Replies 3 ·
Graduate What Are the Differences Between Poincare and Reparametrization Transformations?
- grelade
- · Replies 5 ·
Graduate If an object moves towards you at light speed, what would you see?
- Albertgauss
- · Replies 7 ·
Graduate What Are Half-Integer-Spin Geons and Their Significance in Nature?
- bcrowell
- · Replies 1 ·
Graduate Do Massless Particles Cause Gravitation?
- Constantin
- · Replies 2 ·
Undergrad Is the concept of dynamic space and the effects of gravity on light measurable?
- GTOM
- · Replies 12 ·
Graduate Muons experiment, strange logic
- Tantalos
- · Replies 24 ·
Graduate Confirming Time Dilation Without Subatomic Particles: Steven's Question
- Ihova
- · Replies 7 ·
Undergrad Time Travel Paradox: Can It Happen?
- GladScientist
- · Replies 11 ·
Graduate Does the idea of inflation in the universe contradict relativity?
- fellupahill
- · Replies 4 ·
Graduate Can a Moving Interferometer Cause Photons to Miss Their Target in Space?
- Edi
- · Replies 11 ·
Graduate Time-like or Space-like Events: Analyzing the Train Diagram
- Adel Makram
- · Replies 55 ·
Graduate Geodesic and MiSaTaQuWa equation of motion
- ngkamsengpeter
- · Replies 5 ·
Graduate Calculating proper time using schwartzchild metric
- demonelite123
- · Replies 5 ·
Graduate Differentiation of a vektorfield
- klabautermann
- · Replies 4 ·
Graduate Can changing the metric in GR result in different spacetimes?
- waterfall
- · Replies 27 ·
Graduate Covariant derivative of the Ricci tensor
- nobraner
- · Replies 6 ·
Graduate Trouble understanding MTW particulary noncoordinate basis
- aaa2
- · Replies 16 ·
Is Video Correct? What's Your Opinion?
- Masua
- · Replies 1 ·
Graduate Calculating how light falls under gravity
- xeno108
- · Replies 5 ·
Graduate Covariant and noncovariant Lorentz invariants
- Heirot
- · Replies 13 ·
Graduate Non-geometric approach to gravity impossible?
- waterfall
- · Replies 113 ·
Graduate Relativistic kinetic energy and force.
- granpa
- · Replies 4 ·
Graduate FRW universe, expanding space or spacetime?
- waterfall
- · Replies 48 ·
Graduate Acceleration of a static test-particle
- Agerhell
- · Replies 8 ·
Graduate Black Hole Singularity Blue Shift
- MeLlamoLlama
- · Replies 1 ·
Graduate Relative energy of a black hole.
- cragar
- · Replies 112 ·
Graduate The Role of Gravitation in Particle Physics: Beyond the Everyday Interactions
- azabak
- · Replies 1 ·
Graduate Entering supermassive black holes
- Terrr
- · Replies 29 ·
Graduate Cosmological Redshift: Equation & Universe History
- JPBenowitz
- · Replies 1 ·
Graduate Momentums and Curve Our Space is clearly a little weirder than expected
- Frogeyedpeas
- · Replies 3 ·
Graduate Why does preserving the interval imply Λ^T g Λ = g?
- superbro
- · Replies 8 ·
Graduate Proper definition of world lines in Galilean and Minkowskian spacetime
- Wox
- · Replies 1 ·
Graduate What do I do once the Field Equations have been assembled
- Frogeyedpeas
- · Replies 4 ·
Graduate Does a Yank of 100 Newton Meters Affect a 5 Kg Rod?
- Frogeyedpeas
- · Replies 14 ·
Graduate Relativity and The Stopped Clock Paradox
- James S Saint
- · Replies 76 ·
Undergrad Question on movement speeds relative to an observer.
- Ralphonsicus
- · Replies 4 ·
Graduate Light beam hitting clocks on a rocket at 0.5c
- Jewlian
- · Replies 5 ·
Graduate Two principles of Galilean relativity with rotation and boost
- Wox
- · Replies 1 ·
Graduate Precise instrument (w,h,l) after length contraction still working?
- digi99
- · Replies 8 ·
Graduate Can flat spacetime model Black Holes?
- waterfall
- · Replies 14 ·
Undergrad GeekGeodetic Effect Explained: Proving Relativity
- BeardedTed
- · Replies 12 ·
Graduate Generators for Lorentz transformations
- Wox
- · Replies 6 ·
Graduate Potential Energy of Length Contraction
- Albertgauss
- · Replies 1 ·
Graduate What is the true nature of motion?
- zhangyang
- · Replies 10 ·
Graduate Coordinate and proper time animation
- Naty1
- · Replies 1 ·
Graduate Windmills and the Speed of Light
- audiomatic
- · Replies 11 ·
Graduate Time dilation from length contraction
- intervoxel
- · Replies 14 ·
Graduate Confusion about synchronization
- mananvpanchal
- · Replies 2 ·
Graduate Calculating Relativistic Velocity from Work and Mass
- jaketodd
- · Replies 8 ·
Graduate What are your best arguments for time dilation, so duration is different ?
- digi99
- · Replies 40 ·
Graduate Gauss' law with a charge moving outside a 1 light-year sphere
- kmarinas86
- · Replies 57 ·
Graduate Classification of events and curves in Minkowskian spacetime
- Wox
- · Replies 13 ·
Graduate Motion of light in a gravitational field
- khil_phys
- · Replies 6 ·
Graduate Are Christoffel symbols measurable?
- waterfall
- · Replies 142 ·
Graduate What Is the Estimated Entropy of the Final Crunch in a Closed Universe?
- avery
- · Replies 2 ·
Graduate Time as Parameter in QM vs Coordinate in QFT
- waterfall
- · Replies 4 ·
Graduate Infinite Slab of Mass: Black Hole Effects
- cragar
- · Replies 8 ·
Undergrad Coordinate time and proper time.
- Moataz
- · Replies 26 ·
Graduate Can the Speed of Light be derived?
- friend
- · Replies 9 ·
Undergrad Variation in speed of light - how does it accelerate after being slowed down?
- childej
- · Replies 8 ·
Graduate Does Spacetime Always Remember Events?
- Snip3r
- · Replies 1 ·