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 A question about reference system and time dilation
- atomqwerty
- · Replies 8 ·
Graduate Currently understand by parallel transport
- Rasalhague
- · Replies 9 ·
Graduate How Might GR and Mach's Principle Explain Cosmic Redshift?
- Austin0
- · Replies 13 ·
Graduate Mirror Questions: Q1, Q2 & Q3 - Reflection Effects
- Nickelodeon
- · Replies 2 ·
Graduate General relativity does not seem to address gravity
- LostConjugate
- · Replies 20 ·
Graduate General formula for space-time distortion?
- Cirion
- · Replies 14 ·
Graduate Is it possible to determine absolute speed?
- bkelly
- · Replies 94 ·
Graduate Relativity train and clock synchronization
- BHollis
- · Replies 5 ·
Graduate How does thermal energy affect rest mass in Relativity?
- DaTario
- · Replies 30 ·
Graduate Is Centrifugal Force Real or Fictitious?
- e2m2a
- · Replies 83 ·
Graduate Some technical questions about Birkhoff's theorem
- bcrowell
- · Replies 4 ·
Undergrad How we transform enery into mass?
- hager mahdy
- · Replies 7 ·
Undergrad F = ma doesn't work when aproaching c
- Jacob_hull
- · Replies 3 ·
Graduate An example of moving towards a light source
- atomqwerty
- · Replies 5 ·
Graduate How did Einstein Use Minkowski Spacetime to Derive E=mc2?
- kaleidoscope
- · Replies 1 ·
Graduate Tangent space vs. Vector space
- Troponin
- · Replies 7 ·
Graduate From special to general relativity: why?
- Goldbeetle
- · Replies 5 ·
Graduate Do photons age? Do they remain stationary in x4?
- brunoeinstein
- · Replies 67 ·
Graduate Break Speed of Light: What Happens Next?
- almi
- · Replies 5 ·
Graduate Solving Lorentz Transformations for Light Speed c
- RK1992
- · Replies 2 ·
Graduate Time dilation inside the second horizon of the BH
- Dmitry67
- · Replies 1 ·
Graduate Phase vs group vs signal velocities
- nomadreid
- · Replies 4 ·
Graduate Taylor & Wheeler on Thomas rotation
- Rasalhague
- · Replies 10 ·
Graduate Distance & Time Light Travels in Approaching Mirrors Problem
- stevmg
- · Replies 54 ·
Graduate Experimentally probing the photon's reference frame
- DaTario
- · Replies 4 ·
Undergrad When is the spacecraft arrival detected?
- nickek
- · Replies 2 ·
Undergrad Why time is a separate physical quantity
- ehpc
- · Replies 38 ·
Undergrad Time dilation or time relativity?
- kaleidoscope
- · Replies 4 ·
Graduate Verifying Equation for Particle Energy (E): p=γpmv
- seto6
- · Replies 2 ·
Graduate Reframing and further acceleration
- brainstorm
- · Replies 15 ·
Graduate CTCs Violate No-Cloning: Implications for QM & GR
- bcrowell
- · Replies 1 ·
Undergrad The Smallest blackhole possible?
- Alkatran
- · Replies 29 ·
Graduate Minkowski Space Basics: Time, Light Speed & Purpose
- kaleidoscope
- · Replies 2 ·
Graduate Can an electric switch function differently at relativistic speeds?
- yuiop
- · Replies 9 ·
Graduate Travelling at 0.5c or .43c? Unraveling the Mystery
- kaleidoscope
- · Replies 3 ·
Graduate The Relativity of Velocity: Mass, Time, Length & Speed
- Ali Asadullah
- · Replies 1 ·
Graduate Proving Change in Volume V(t) of Sphere in Free Fall
- victorneto
- · Replies 7 ·
Graduate Is Time Dilation Just an Illusion?
- Nickelodeon
- · Replies 18 ·
Graduate Is Event Sequencing Relative in the Theory of Manifolds?
- Kommandant
- · Replies 81 ·
Graduate Is Einstein's Gravity Theory Overly Simplistic in Explaining Space Curvature?
- Line
- · Replies 27 ·
Graduate Everything depends on gravity and mass
- magrant
- · Replies 1 ·
Graduate The Speed of Gravity: Debated Answers
- McKy
- · Replies 34 ·
High School Need help understanding something. About light speed - Thanks
- nukeman
- · Replies 8 ·
Graduate Understanding the Spacetime Fabric
- Thikr
- · Replies 14 ·
Graduate Minkowski-minkowski thin shell paradoxon?
- mersecske
- · Replies 3 ·
Graduate Causality in GR (was Is event sequencing relative? )
- bcrowell
- · Replies 0 ·
Graduate Alternative Lagrange's Equations
- CGR_JAMA
- · Replies 8 ·
Graduate How Spacetime is Stretched/Compressed: Experiments?
- fys iks!
- · Replies 1 ·
Graduate Cosmological Redshift in FRW Coordinates – Energy Conservation & Time Dilation
- nutgeb
- · Replies 13 ·
Graduate Repositioning clocks: continuing from the switch paradox
- calebhoilday
- · Replies 80 ·
Graduate Help with Lorentz Transformation
- Theseus
- · Replies 4 ·
Graduate What Defines a Null Coordinate in Spacetime Metrics?
- DrGreg
- · Replies 7 ·
Undergrad Understanding Einstein's Theory of Relativity
- ppr2010
- · Replies 3 ·
Graduate What Would Happen if Usain Bolt Ran at the Speed of Light?
- idiotphysics
- · Replies 5 ·
Graduate Layman's doubts about Gen Relativity
- superkan619
- · Replies 157 ·
Graduate Nothing can travel faster than light
- TheIconoclast
- · Replies 13 ·
Undergrad What Would Happen if an Object Fell in a Vacuum?
- g0dfreak
- · Replies 2 ·
Undergrad Noob question: If you travel as fast as light, time freezes so
- nap
- · Replies 52 ·
Graduate Brown's derivation of Thomas rotation
- Rasalhague
- · Replies 8 ·
High School What was the motive of michelson morley experiment
- abhi-iitb
- · Replies 6 ·
Graduate Why is the first term on the right-hand side of this equation transposed?
- Living_Dog
- · Replies 3 ·
Graduate How Does a Cosmic Ray Measure Temperature Changes in the Sun?
- Living_Dog
- · Replies 6 ·
Graduate Mass increase from high velocity Q
- TheTechNoir
- · Replies 4 ·
Graduate How long does it take to go 10LY?
- jnorman
- · Replies 6 ·
Graduate Why Does Time Differ Between Astronauts and Earth in Relativity Theory?
- MrHayman2
- · Replies 12 ·
Graduate How Do Minkowski Diagrams Illustrate Lorentz Transformations?
- stevmg
- · Replies 2 ·
Graduate Noether currents associated with diffeomorphism invariance
- GargleBlast42
- · Replies 8 ·
Graduate White Holes & Eternal Black Holes: Stephen D.H. Hsu
- bcrowell
- · Replies 0 ·
Graduate Could an object survive passing through two intersecting black holes?
- BkBkBk
- · Replies 3 ·
Graduate Simultaneity of Events in Different Inertial Frames
- CHUKKY
- · Replies 29 ·
Graduate A bit of a confusion regarding light, speed of it
- andyarok
- · Replies 12 ·
Undergrad CD: Does gravity cancel out acceleration?
- Bussani
- · Replies 12 ·
Undergrad Questioning the Physics of a Hypothetical Cord
- 01001101
- · Replies 2 ·
Graduate Spacetime Symmetry: Find Quick Answer to Simple Question
- ZirkMan
- · Replies 4 ·
Graduate Existence of solutions to Einstein's equation
- causalset
- · Replies 2 ·
Graduate Is physics plain classical and Relativity an illusion?
- Gerenuk
- · Replies 21 ·
Graduate Can We Really Predict the Future by Exceeding the Speed of Light?
- glennpagano
- · Replies 30 ·
Graduate The Collision Clock Experiment
- calebhoilday
- · Replies 20 ·
Graduate The Switch Paradox: Resolving Relativity of Simultaneity
- calebhoilday
- · Replies 20 ·
Graduate Schwarzschild solution without matter
- paweld
- · Replies 4 ·
Graduate Relative velocity and work done
- werunom
- · Replies 7 ·
Undergrad Quick length contraction question please
- rede96
- · Replies 11 ·
Graduate What Causes Time Dilation Between Two Objects?
- Z-one
- · Replies 1 ·
Undergrad Can a Light Spot Go Faster than c?
- Dr Lots-o'watts
- · Replies 1 ·
High School How Can We Truly Measure the Speed of Light?
- JasonWuzHear
- · Replies 5 ·
Graduate Is One-Form Multiplication Commutative?
- schwarzschild
- · Replies 1 ·
Graduate How is the Minkowski 4-space equation connected to hyperbolic functions?
- stevmg
- · Replies 68 ·
Graduate The mass of an object warps/bends/disturbs spacetime. But does the
- PeterShaw
- · Replies 5 ·
Graduate Making sure events are simultaneous in S'
- Shaybay92
- · Replies 3 ·
Graduate Is there a proof of parallel universes?
- cstvlr
- · Replies 1 ·
Graduate Thin shell velocity is greater than speed of light?
- mersecske
- · Replies 4 ·
Graduate Relativistic Effects on the E-field
- mysearch
- · Replies 5 ·
Graduate Is the Lorentz force invariant under Lorentz transformations?
- mysearch
- · Replies 10 ·
Susskind Lectures on General Relativity
- drlang
- · Replies 10 ·
Graduate Mass increase at relativistic speeds
- gsingh2011
- · Replies 25 ·
Graduate Fermats P & Gravitational Lensing
- azaharak
- · Replies 12 ·
Graduate List of people who understand relativity
- least_action
- · Replies 7 ·
Graduate Calculating the binding energy of a black hole
- avrndef
- · Replies 12 ·
Graduate Do train gaps appear smaller in motion?
- Nabeshin
- · Replies 53 ·
High School Does the Earth move around the Sun?
- diegocas
- · Replies 53 ·