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 Pauli-Fiertz Lagrangian: Book Recommendation
- Neitrino
- · Replies 1 ·
Graduate Are Einstein's and Newton's Laws of Physics in Conflict?
- Hertz
- · Replies 21 ·
High School How Can We Reach the Speed of Light?
- Vorbis
- · Replies 26 ·
Graduate Leonard Susskind: General Relativity
- dx
- · Replies 6 ·
Graduate Gradients in the curvature of space-time
- Bob Walance
- · Replies 5 ·
Graduate What is the correct definition of energy in relativistic systems?
- Hyperreality
- · Replies 3 ·
Graduate Coupled nonlinear partial differential equations or simple matrices?
- ilocar
- · Replies 2 ·
Undergrad Gravity Waves: Speed & Possible Outcomes
- espen180
- · Replies 2 ·
Undergrad Is It Possible to Reach the Speed of Light with a Spacecraft?
- Andrew Buren
- · Replies 9 ·
Graduate Polarization Vectors: Momentum & Helicity Explained
- emma83
- · Replies 2 ·
Graduate What would it actually look like?
- p.tryon
- · Replies 11 ·
Graduate Will our sun become black hole if it were moving fast enough?
- aaryan0077
- · Replies 3 ·
Graduate Alternative way of looking at simultaneity is 1
- Dreads
- · Replies 24 ·
Graduate Can Closed Timelike Curves Enable Real Time Travel?
- jaredmt
- · Replies 3 ·
Graduate Gravitational Path of an Object
- Philosophaie
- · Replies 1 ·
Graduate Can photons create their own gravity?
- nuby
- · Replies 29 ·
Undergrad Speed of Light Always The Same?
- antd
- · Replies 32 ·
Undergrad A BRIEF HISTORY OF TIME, question
- mchammer9111
- · Replies 3 ·
Graduate Understanding Causal Set Theory and Its Implications for the Universe
- causalset
- · Replies 6 ·
Graduate Special relativity and Earth in context to a stationary point
- gray1985
- · Replies 5 ·
Graduate Our light cone was a black hole
- nutgeb
- · Replies 12 ·
Graduate Twin Paradox- a quick(ish) question
- Smith987
- · Replies 53 ·
Graduate Zero connection => Zero torsion tensor ?
- guhan
- · Replies 11 ·
Graduate Calculating Time Elapsed in Circling Spaceship
- ibc
- · Replies 7 ·
Graduate Gravitational redshift and black holes
- niin
- · Replies 2 ·
Graduate Are black holes bosons or fermions?
- franoisbelfor
- · Replies 21 ·
Graduate Does a black hole have shape?
- Grass_Hopper
- · Replies 18 ·
Graduate Red shift occurs when gravity is at 90*
- JerryCic
- · Replies 23 ·
Graduate Can we predict which reference frame is correct?
- NWH
- · Replies 14 ·
Graduate 1st Law of Black Hole Mechanics
- montreal1775
- · Replies 1 ·
High School Nasa speaks of the either the space shuttle or the ISS
- neh4pres
- · Replies 6 ·
Graduate What Causes the Shapiro Time Delay in Radar Signals?
- yuiop
- · Replies 42 ·
Graduate Gravity question: Why do things fall?
- staballoy
- · Replies 7 ·
Graduate Is the 4-velocity always a space-tipe 4-vector?
- martyf
- · Replies 22 ·
Undergrad Acceleration and twin paradox question
- ronirvol
- · Replies 2 ·
Graduate Thought experiment in relativity of simultaneity
- Fallen Seraph
- · Replies 18 ·
Graduate Getting stuff out of a black hole using a second one
- michelcolman
- · Replies 6 ·
Graduate High relativistic speed + entanglement
- typical guy
- · Replies 2 ·
Undergrad Beginner needs answers to basic questions about the speed of light
- ksinelli
- · Replies 4 ·
Graduate Conceptual Question about the Change in Mass
- raymondtco
- · Replies 29 ·
High School What Causes Gravity and Can Anyone Explain It to Me?
- hollyrenee
- · Replies 6 ·
Graduate Summation convention and index placement
- ramparts
- · Replies 4 ·
Graduate Connection between fabric of space, max. speed (of light) and time dilation
- mdl
- · Replies 3 ·
Graduate The Present Moment in Spacetime?
- ConradDJ
- · Replies 48 ·
Graduate Where is a light year inside the earth?
- heinz
- · Replies 13 ·
Graduate Photons, gravity, and the bending of light.
- martinscherer
- · Replies 9 ·
Graduate Superman's Exercise: Lifting & Twirling a Rod 100K km Long
- ACG
- · Replies 5 ·
Graduate Time Dilation and Gravity's Effect on Light
- mwalke46
- · Replies 19 ·
Graduate Relativistic Energy of Antimatter
- benk99nenm312
- · Replies 25 ·
Graduate What Is Time: Answers to Your Questions
- Stratosphere
- · Replies 71 ·
Graduate Adding momentum in STR and DSR?
- albatros
- · Replies 1 ·
Graduate Time dilation and gravitational constant
- zonde
- · Replies 1 ·
Graduate Can Special Relativity Theory Explain All Electromagnetic Phenomena?
- exmarine
- · Replies 22 ·
Graduate Modeling Path of Object in General Relativistic/Riemannian Geom
- Philosophaie
- · Replies 4 ·
Graduate Gravitation/general relativity (minus math)
- Eolill
- · Replies 7 ·
Graduate Bending of Space: What, Why, Where, When?
- jobyts
- · Replies 10 ·
Graduate Cosmological Constant and the Colapse of the Universe
- NWH
- · Replies 1 ·
Graduate Centripetal thrust need at high-speed
- qraal
- · Replies 3 ·
Graduate Is the Duel on the Moving Train Fair in Relativistic Terms?
- Saw
- · Replies 56 ·
Undergrad Gravity: Attractive or Repulsive Force?
- Whoeveryouare
- · Replies 29 ·
Undergrad Coriolis effect and relativity
- abccbaabc014
- · Replies 4 ·
Graduate So what's next for Einstein's Relativity?
- NWH
- · Replies 11 ·
Graduate Philosophic comments on time in Relativity.
- matheinste
- · Replies 24 ·
Graduate Tensors versus differential forms
- RedX
- · Replies 23 ·
Graduate Potential Energy and energy conservation in General Relativity
- yuiop
- · Replies 15 ·
Undergrad Gravity at a spot between the Earth and the Sun Summing to 0.
- GrizzlyBat
- · Replies 8 ·
Graduate Question Regarding Electromagnetic Fields in Special Relativity
- Savant13
- · Replies 2 ·
Graduate Is Time Truly a Uni-Dimensional Force?
- JKFlyguy
- · Replies 13 ·
Graduate Gravitational blueshift and a Moving Mass
- nutgeb
- · Replies 3 ·
Graduate Can general relativity derive from superstring theory?
- magnetar
- · Replies 1 ·
Graduate Can Massless Objects Really Travel Faster Than Light?
- craq
- · Replies 12 ·
Graduate Mass (both relativistic and rest) of a photon
- chiro
- · Replies 16 ·
Graduate Energy & momentum in non-Minkowski coordinates
- DrGreg
- · Replies 3 ·
Graduate Escape a Black Hole: Can It Be Done?
- Spizmar
- · Replies 5 ·
Undergrad GRB 13.1 Billion Light Years From Earth: Explained
- ICSunSpots
- · Replies 3 ·
Undergrad Two Black Holes Collide: The Result
- zelldot
- · Replies 5 ·
Graduate Why Does the Epsilon Delta Rule Simplify Expressions in Vector Calculus?
- revolution200
- · Replies 1 ·
Undergrad A copernicus/relativity question
- nathan heiney
- · Replies 19 ·
Graduate What is the significance of covariance in general relativity?
- DiamondGeezer
- · Replies 2 ·
Graduate Can gravitational time dilation be measured at different levels of the universe?
- NWH
- · Replies 3 ·
Graduate Understanding 3D Space Bending in General Relativity
- p.tryon
- · Replies 11 ·
Graduate Event Horizons / Time Dilation
- paulctan
- · Replies 8 ·
Graduate Raising indices in curved space
- bdforbes
- · Replies 5 ·
Graduate Vanishing Ricci scalar always implies vacuum?
- blakeredfield
- · Replies 8 ·
Graduate Simultaneity - Albert Einstein and the Theory of Relativity
- zarmewa
- · Replies 14 ·
Graduate Is the Speed of Light Truly Constant in General Relativity?
- MetricBrian
- · Replies 30 ·
Graduate How does gravity tend to propagate?
- NWH
- · Replies 6 ·
Graduate Equivalence Principle & Gravitational Time Dilation
- nutgeb
- · Replies 20 ·
Graduate Deriving Multiplication Factor for Geometrized Units: Help Needed!
- ofeyrpf
- · Replies 4 ·
Graduate Christoffel symbols etc. via Lagrangian
- jixe
- · Replies 2 ·
Graduate Why is the speed of light restricted?
- jamesb-uk
- · Replies 1 ·
High School Is this an example of Relativity?
- NWH
- · Replies 3 ·
Graduate Relative motion of C on C formula
- k-hursh
- · Replies 7 ·
Graduate Physics Emergency: Two Trains Moving Away at 51% Light Speed
- Rico Bamchug
- · Replies 3 ·
Graduate Photon energies relative to movement, and relativistic mass Q's.
- Mzachman
- · Replies 3 ·
High School Can't Believe It! Microsoft Word Refuses to Copy & Paste
- Dreads
- · Replies 8 ·
Graduate Relating a spacecraft to the sun through an intermediate frame
- venomxx
- · Replies 10 ·
Graduate Does time dilation explain the constant measured speed of light?
- cos
- · Replies 28 ·
Graduate Centrifugal force around planets
- Cemre
- · Replies 1 ·
Graduate Earth's Velocity: Lorentz Factor & Reference Frame
- S. Moger
- · Replies 8 ·