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 Why wouldn't black hole singularity evaporate before it can form?
- lukesfn
- · Replies 99 ·
Graduate Hyperbolic path in Minkowski space
- luitzen
- · Replies 7 ·
Graduate Can a twin paradox occur if one twin never changes direction or stops?
- phellen
- · Replies 11 ·
Graduate How to plot correctly spacetime diagrams
- RiccardoVen
- · Replies 39 ·
Graduate Why is the speed of light considered a constant in physics?
- Avichal
- · Replies 10 ·
Undergrad Same Speed for Ball Thrown from Moving Car?
- Hepic
- · Replies 1 ·
Graduate A few very basics questions regarding 4 and 3 momenta and the trace of
- fluidistic
- · Replies 6 ·
Graduate Light is slower if object moves fast
- Avichal
- · Replies 10 ·
Graduate Trying to reconcile Lorentz Transformation and Length Contraction
- rajark
- · Replies 8 ·
Graduate Tensor equation in Dirac's 1975 book
- exmarine
- · Replies 4 ·
Graduate Deriving Lorentz transformation
- shounakbhatta
- · Replies 1 ·
Graduate Conservation of relativistic angular momentum
- yuiop
- · Replies 17 ·
Graduate Why GRT is the proper correction of gravitomagnetism?
- jarekd
- · Replies 10 ·
Undergrad E = mc^2, so how can anything have zero mass?
- goldust
- · Replies 8 ·
Graduate Space expansion, gravity waves, warp
- Edi
- · Replies 4 ·
Graduate 8*pi in the Einstein field equations?
- pellman
- · Replies 1 ·
Graduate Derivative of det(g): Confirmation Needed
- pellman
- · Replies 1 ·
Undergrad Comparing Newton and Einstein - Who is Correct?
- Hepic
- · Replies 22 ·
Graduate What Happens to the Twins' Ages in the Twin Paradox?
- Cruncher
- · Replies 4 ·
Graduate Shift in Mercury's Perihelion by finite light speed
- TeddySciGuy
- · Replies 1 ·
Graduate Visualizing Mass Acceleration to Speed of Light: Is E=mc^2?
- bizzder
- · Replies 6 ·
Graduate Conservation of Energy in General Relativity
- tionis
- · Replies 18 ·
Graduate Contra-Variant Vector Transform: Taking Partials
- exmarine
- · Replies 1 ·
Undergrad Confused with Special Relativity
- tolove
- · Replies 8 ·
Graduate Need help with time dilation and length contraction.
- Fiziqs
- · Replies 13 ·
Graduate Does Mass or Size Affect Curvation in Relativity?
- Hepic
- · Replies 1 ·
Graduate Challenges in Merging GR and QM from a Lagrangian Perspective
- bolbteppa
- · Replies 7 ·
Graduate Construct electromagnetic stress-energy tensor for a non-flat metric
- coleman123
- · Replies 12 ·
High School Going the speed of light, possibly.
- DrWafflez Jr.
- · Replies 3 ·
Graduate Is Light Massless? Evidence & Experiments Explained
- ilikescience94
- · Replies 13 ·
High School Time moves forward, what if you move UP or DOWN? Does time stop?
- lindsayb026
- · Replies 11 ·
Graduate Unable to see how light's one-way speed can be c experimentally
- BluMuun
- · Replies 49 ·
Graduate Possible Exits Simultaneously in Two Positions: Explained
- bgq
- · Replies 8 ·
Graduate Relativity of Simultaneity Issue
- bgq
- · Replies 20 ·
Graduate Gravity: Warping of Space or Force?
- messysmurf
- · Replies 2 ·
Graduate Gravitating Perfect Fluid Solution & Mass/Energy Total
- Mentz114
- · Replies 2 ·
Graduate Flat Spacetime at Event Horizon?
- jbunch
- · Replies 14 ·
Graduate Thin rotating disc under constant acceleration.
- yuiop
- · Replies 80 ·
Graduate Killing fields as eigenvectors of Ricci tensor
- WannabeNewton
- · Replies 4 ·
Graduate Does the Vacuum Solution in General Relativity Hold in the Presence of Matter?
- Thinkor
- · Replies 3 ·
Graduate Galilean principle of relativity
- roineust
- · Replies 44 ·
Graduate A question about the equivalency principle
- ryan albery
- · Replies 14 ·
Graduate About c being constant and interaction at c.
- A Dhingra
- · Replies 9 ·
Graduate Relativity and Distance Measurement in Physics | PF Community Discussion
- moonman239_2
- · Replies 3 ·
Graduate How is the deficit angle due to a relativistic cosmic string derived?
- Dilatino
- · Replies 1 ·
Graduate Question on General Relativity from a layperson
- Scott P
- · Replies 15 ·
Graduate Is ruler or radar measurement more accurate in defining length in relativity?
- yuiop
- · Replies 8 ·
Graduate Coordinate charts and open sets
- Ibix
- · Replies 2 ·
Graduate Explaining Time Dilation in a Simple Way
- suryanarayan
- · Replies 9 ·
Graduate Geometrical meaning of Weyl tensor
- Benjam:n
- · Replies 7 ·
Graduate Lorentz transformation for time - why the 'x' term?
- chipotleaway
- · Replies 2 ·
Graduate If time didn't exist could anything move or even happen?
- crabapplesause
- · Replies 11 ·
Graduate Why Is Gravity Infinite at a Black Hole's Center but Zero at Earth's Center?
- Sasikanth9
- · Replies 1 ·
Graduate What is the Effect of Motion on the Velocity Vector of Light?
- bgq
- · Replies 4 ·
Graduate Momentum of light sans Maxwell
- Will Koeppen
- · Replies 3 ·
Graduate Is Relativistic Electromagnetism Affecting a Test Charge Above a Moving Wire?
- Jimmy87
- · Replies 2 ·
Graduate Back with more relativity questions
- lostglutton
- · Replies 4 ·
Graduate How Would Physics Change Without Covariant and Contravariant Tensors?
- extrads
- · Replies 3 ·
Undergrad What is the significance of this equation on my t-shirt?
- frontman212
- · Replies 2 ·
Graduate Question about symmetry of length contraction
- chipotleaway
- · Replies 4 ·
Graduate Does Length Contraction Occur If Measuring Tools Contract Equally?
- bgq
- · Replies 4 ·
Undergrad Explanation of expanding universe
- SBMDStudent
- · Replies 2 ·
Graduate Twin Paradox & Neutron Speeds: Questions Explored
- Hepic
- · Replies 1 ·
Graduate Stress–energy tensorT^uv in theory and in practice
- extrads
- · Replies 24 ·
Undergrad Equivalence Principle: Einstein's Dilemma
- JamesClarke
- · Replies 1 ·
Graduate Curious about gravitational sluing detail
- bowlegged
- · Replies 34 ·
Graduate What is the Definition of Continuity in Minkowski Space?
- cosmic dust
- · Replies 5 ·
High School Can someone explain to me this about gravity please
- Abidal Sala
- · Replies 3 ·
Undergrad Time dilation and length contraction
- suryanarayan
- · Replies 2 ·
Graduate Magnetic Fields of a Relativistic Charged Particle
- Albertgauss
- · Replies 6 ·
Undergrad Running at Different Speeds: Who Experiences Time Differently?
- Hepic
- · Replies 5 ·
Graduate GR Text: Zee's Formulas & Where I'm Going Wrong
- dm4b
- · Replies 1 ·
Graduate Should photons be considered massless?
- Jonnyb302
- · Replies 38 ·
Graduate Lorentz Transformation: Derivation & Explanation
- JamesClarke
- · Replies 1 ·
Graduate How to resolve the contradiction in twin clocks?
- xinhangshen
- · Replies 119 ·
Graduate Electric Field Strength Conservation in Direction of Motion
- StateOfTheEqn
- · Replies 1 ·
Graduate Time Dilation of Particles A & B in Gravitational Field
- Flor
- · Replies 3 ·
Graduate What is Gravitational Field Strength in General Relativity?
- muppet
- · Replies 22 ·
Undergrad Einstein's Theory: What Happens to Humans at 300,000 km/s?
- Hepic
- · Replies 16 ·
Graduate Exploring the Milne Universe in 2D: Rindler Spacetime Comparison
- alialice
- · Replies 14 ·
Graduate Is Time Dilation the Key to Understanding Time Travel in Science Fiction?
- lyncsta
- · Replies 1 ·
Graduate Why Does Relativistic Kinetic Energy Differ at Low Velocities?
- JamesClarke
- · Replies 3 ·
Graduate Timelike v. spacelike, is it arbitrary?
- BruceW
- · Replies 177 ·
Graduate Understanding Relativity Through Spacetime Diagrams
- Involute
- · Replies 4 ·
Graduate Tall rotating cylinder near a black hole
- yuiop
- · Replies 34 ·
Graduate Approaching C in any direction?
- MinnesotaState
- · Replies 1 ·
Graduate Gravitation: Experiments Proving Its Scope
- ShayanJ
- · Replies 5 ·
Graduate Understanding Light's Constant Speed in Special Relativity
- phellen
- · Replies 18 ·
Graduate Einstein & Simultaneity: Two Questions
- jeffkosmo
- · Replies 17 ·
Graduate Role of distance in defining simultaneity
- analyst5
- · Replies 17 ·
Graduate Question about a general way to prove E^2 = (cp)^2 + (mc^2)^2
- lightarrow
- · Replies 18 ·
Graduate Continuously confused by Special Relativity
- phellen
- · Replies 12 ·
Undergrad Does time control light speed?
- ibzy
- · Replies 5 ·
High School What causes weightlessness in a free fall?
- chaszz
- · Replies 4 ·
Graduate Energy-mass equivalence simplification of equations?
- blokpoi
- · Replies 10 ·
Graduate About the convention of simultaneity
- analyst5
- · Replies 21 ·
Graduate Regarding notation for Lorentz transformation
- grzz
- · Replies 11 ·
Graduate Is G a Function of R in Einstein's Field Equations?
- Jonny_trigonometry
- · Replies 6 ·
Graduate Geodesic Equation in Flat & Curved Spaces
- Benjam:n
- · Replies 5 ·
Graduate Proper Reference Frame -Accelerated observer
- WannabeNewton
- · Replies 4 ·