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 What do we mean by pure gravity
- unrwar
- · Replies 2 ·
Graduate What is the Physical Meaning of Gravitational Wave Detection?
- TrickyDicky
- · Replies 29 ·
Graduate List of Special Relativity Paradoxes.
- greswd
- · Replies 12 ·
Graduate A problem from Sean Carroll's about Killing vectors
- shichao116
- · Replies 3 ·
Graduate Conflicting Transverse Doppler Shift Equations?
- greswd
- · Replies 4 ·
Graduate Kinetic Energy Transfer in Relativity: A Puzzler
- Skwint
- · Replies 14 ·
Graduate Twin clocks-is it acceleration?
- phyti
- · Replies 58 ·
Graduate Why Does Rotating the Michelson-Morley Apparatus Change the Time Delay?
- BareFootKing
- · Replies 1 ·
Graduate Cherenkov Radiation in Vacuum: Can Superluminal Particles Emit Light?
- e.chaniotakis
- · Replies 5 ·
Graduate Light energy, just like time, is relative?
- Aspchizo
- · Replies 5 ·
Graduate Gravity is a limitless supply of energy to inflaton field
- AlephClo
- · Replies 5 ·
Graduate Does the Starting Point Influence Time Dilation Observations?
- peterspencers
- · Replies 14 ·
Graduate Resolving the Twin Paradox in Relativity
- thehangedman
- · Replies 15 ·
Graduate Varying with respect to vierbein
- pleasehelpmeno
- · Replies 3 ·
The Secrets of Time Travel to the Past: A Comprehensive Guide
- bobby77
- · Replies 4 ·
Graduate No privileged frame of reference
- emd
- · Replies 21 ·
Graduate Definition of Inertial Frame in GR: Math Explained
- Kontilera
- · Replies 1 ·
Graduate Varying determinant of a metric
- pleasehelpmeno
- · Replies 22 ·
Graduate Contracting Tensors: g^{\mu\nu}g_{\mu\nu}=4 & T
- pleasehelpmeno
- · Replies 6 ·
Graduate Relativity Paradox: Is Moving at Speed of Light Possible?
- jaydnul
- · Replies 8 ·
Graduate Does a free falling charge radiate ?
- greswd
- · Replies 102 ·
Graduate Killing Vectors (question on Problem)
- Morgoth
- · Replies 6 ·
Graduate Time Dilation in Spinning Cylinder Room: Can We Break the Speed of Light?
- roshan2004
- · Replies 1 ·
Graduate Is the Twin Paradox a Logical Mistake in Time Dilation and Relativity?
- High Overlord
- · Replies 8 ·
Graduate Can Metrics Reveal Flat Spaces Without Computing the Riemann Tensor?
- Morgoth
- · Replies 9 ·
Undergrad Can Matter Waves Travel Faster Than Light?
- Akshay_Anti
- · Replies 3 ·
Graduate I'm A Beginner: Relativity & The Human Mind
- DIYMobileAudio
- · Replies 6 ·
Graduate Theory of Relativity VS. Relativity to placement
- SteveDave
- · Replies 4 ·
Graduate Gravity question: force vs spacetime curvature
- xlsdx
- · Replies 6 ·
Graduate Two observers. One closer to an event horizon.
- longcreepyhug
- · Replies 11 ·
Graduate Different Clock Rates Throughout Accelerating Spaceship
- 1977ub
- · Replies 110 ·
Graduate Is Poincare wrong about no preferred geometry?
- jmarshall
- · Replies 21 ·
Graduate If I acclerate and observe a photon, do I see the spin of the photon changing?
- jartsa
- · Replies 2 ·
Graduate Where do you think a black hole leads to, or what is inside of one?
- blackholefizix
- · Replies 1 ·
Graduate Light clock with spaceship moving vertical at .99c
- ebodet18
- · Replies 4 ·
Graduate Faster velocity than the speed of light?
- sydfremmer
- · Replies 30 ·
Graduate Time and space travel at light speed
- mike777
- · Replies 25 ·
Graduate Spacetime diagram - Twin paradox
- jaumzaum
- · Replies 41 ·
Graduate Does the magnetic field in relativity move at the same speed as the magnet?
- arydberg
- · Replies 2 ·
Graduate Defining a Family of Observers: Textbook Reference Needed
- WannabeNewton
- · Replies 4 ·
Graduate Do forces compose/superpose in special relativity?
- James MC
- · Replies 17 ·
Graduate Einstein postulates and the speed of light
- MHD93
- · Replies 56 ·
Graduate Does the twin paradox hold true for particles as well?
- Adrian07
- · Replies 17 ·
Graduate Logical Proof That Black Holes Can't Exist
- Spin-Analyser
- · Replies 3 ·
Graduate Can someone confirm that this is how time dilation works?
- chestycougth
- · Replies 2 ·
Graduate Is a Black Hole a Wormhole According to Poplawski's Theory?
- PeterDonis
- · Replies 10 ·
Graduate Understanding the Principle of Equivalence: A Closer Look
- SinghRP
- · Replies 16 ·
Graduate Need help understanding this math
- Didymus
- · Replies 4 ·
Graduate Why is the Reissner-Nordstrom Metric Not Considered a Vacuum Solution?
- gentsagree
- · Replies 7 ·
Graduate Testing Equivalence Principle: Prying Gravity From Inertia
- Celeritas02
- · Replies 3 ·
Undergrad Animated Gravity : Einstein vs. Newton
- A.T.
- · Replies 13 ·
Graduate Is the growth of black holes paradoxical?
- BitWiz
- · Replies 31 ·
Graduate Understand Special Relativity and Time paradox
- jaumzaum
- · Replies 406 ·
Graduate How does the event horizon of a blackhole know how to behave?
- Lino
- · Replies 9 ·
Undergrad Is E=mc2 About Converting Mass to Energy?
- big_bounce
- · Replies 14 ·
Graduate Help with Problem on Bekenstein Bound
- HowardTheDuck
- · Replies 16 ·
Graduate Gravitation: Curvature- vs -particles
- rdeanreaper
- · Replies 8 ·
Graduate Frame of reference question about equivalence principle
- brenan
- · Replies 2 ·
Graduate Time slowing down for someone traveling just under the speed of light
- mycotheology
- · Replies 13 ·
Graduate Simultaneous events - special relativity
- jaumzaum
- · Replies 4 ·
Graduate Shining a laser out of a train - What does the stationary
- mycotheology
- · Replies 3 ·
Undergrad Frames of reference for speed?
- yoyopizza
- · Replies 25 ·
Graduate AdS4 Radius & Cosmological Constant: Is n Relevant?
- gentsagree
- · Replies 1 ·
Graduate Derivation of gauge condition in linearized GR
- WannabeNewton
- · Replies 5 ·
Graduate Is There a Hidden Universal Constant that Affects All Branches of Science?
- microedit
- · Replies 4 ·
Graduate Metric Properties of a Simple ds^2 Equation
- pleasehelpmeno
- · Replies 1 ·
Graduate Equilibrium temperature distribution in gravitational field
- Jano L.
- · Replies 10 ·
Graduate Physical model of measurement for affine geometry, dual
- bcrowell
- · Replies 6 ·
Graduate Relativity question - effects between moving and stationary particles?
- xxYOUKNOWMExx
- · Replies 3 ·
High School Unraveling the Mysteries of Time: A Layperson's Quest to Understand Physics
- Sabiancym
- · Replies 5 ·
Undergrad Can kinetic energy be added linearly?
- kbar1
- · Replies 1 ·
Graduate The speed of light in a gravitational field
- e2m2a
- · Replies 92 ·
Graduate Question about differential geometry
- Jip
- · Replies 11 ·
Graduate Classical Fields and Newton's 2nd Postulate of Motion
- dr_k
- · Replies 27 ·
Graduate Derivation of Hawking temperature
- gentsagree
- · Replies 1 ·
Undergrad Time Dilation: Can You Chase Something Too Fast?
- i.h87
- · Replies 1 ·
Graduate Varying determinant of a metric
- pleasehelpmeno
- · Replies 5 ·
Graduate How can the gradient of a scalar field be covarient?
- dEdt
- · Replies 40 ·
Graduate Einstein and Relativity: Uncovering the Origins of Length Contraction
- quicksilver123
- · Replies 17 ·
Graduate Does the Michelson-Morley Experiment Truly Disprove Ether?
- mark goldman
- · Replies 30 ·
Graduate Schwarzchild radius and escape velocity?
- qaovxtazypdl
- · Replies 7 ·
Graduate What motivated Einstein to start thinking about a General Theory of Relativity?
- jmoorhea
- · Replies 32 ·
Graduate Speed of Light Train: When Does it Start Breaking Down?
- shlosmem
- · Replies 17 ·
Graduate Using 4-Gradient to Apply Function to 4-Vector
- chill_factor
- · Replies 7 ·
Graduate Geons in Geometrodynamics: J.A. Wheeler & Stability Questions
- Markus Hanke
- · Replies 3 ·
Graduate Determinant of the metric tensor
- LayMuon
- · Replies 10 ·
Graduate Does light have a frame of reference?
- tahayassen
- · Replies 4 ·
Graduate Calculating Heat Reflection with a Radiometer: Mass/Force Equation
- cosmic-omposer
- · Replies 1 ·
Graduate Big Bang singularity vs Black hole singularity
- quantafyre
- · Replies 9 ·
Graduate Kaluza–Klein theory, a point charge, A_0, geometry of.
- Spinnor
- · Replies 18 ·
Graduate GPS satellite and satnav receiver clock synchronisation
- quitequick
- · Replies 3 ·
Graduate Hawking radiation and Black hole evaportion
- quantafyre
- · Replies 12 ·
Graduate Is There a Solution to the Faster-than-Light Problem in General Relativity?
- romesh97
- · Replies 22 ·
Graduate Is the Speed of Light Boundary Relative to a Fixed Point in the Universe?
- jayme5th
- · Replies 10 ·
Graduate Arguments Against Existence of Isotropic Length Contraction/Expansion
- smm
- · Replies 4 ·
Graduate The gravitational force of energy
- anorlunda
- · Replies 4 ·
Graduate Euler-Lagrange and Christoffel symbols
- LayMuon
- · Replies 7 ·
Graduate Rigorous definitions in general relativity
- Nana Dutchou
- · Replies 7 ·
Graduate Metric Tensor and frames (wrt prof.susskind's lectures)
- santo35
- · Replies 3 ·
Graduate Newtonian force as a covariant or contravariant quantity
- bcrowell
- · Replies 151 ·