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 The Central Region of Black Holes: Composition, Energetics, and Equilibrium
- stewart brands
- · Replies 26 ·
Graduate Is Special Relativity a field theory?
- QuantumCurt
- · Replies 19 ·
Graduate Do rotating frames have planes of simultaneity?
- analyst5
- · Replies 29 ·
Graduate Is This Description of Falling Into a Black Hole Correct?
- Drakkith
- · Replies 1 ·
Graduate Lorentz transformation of energy and E = h f
- johne1618
- · Replies 12 ·
Undergrad Mach's Principle: What Is It & How Can I Understand It?
- sanjone
- · Replies 1 ·
Undergrad Need help in a time dilation question (high school)
- danny20051
- · Replies 7 ·
Graduate Does the Mass of a Magnesium Lamp Decrease After Emitting Light?
- Philosopha
- · Replies 17 ·
Graduate What Determines the Specific Speed of Light in Our Universe?
- jacassidy2
- · Replies 3 ·
Undergrad GRE Prep: Simultaneity Questions - Answer: No, Never
- Solarmew
- · Replies 10 ·
Undergrad How Can an Ant and a Melon Explain Time-Space Theory?
- B4ssHunter
- · Replies 2 ·
Undergrad How is light speed constant and in all directions ?
- B4ssHunter
- · Replies 9 ·
Undergrad Weight of Fast Rotating Gyro - Does Angular Velocity Increase Weight?
- leave
- · Replies 1 ·
Graduate Action at Distance: Can Brake Speed Exceed C?
- Darko M
- · Replies 15 ·
Graduate Relativistic corrections to classical physics formulae
- Positron137
- · Replies 4 ·
Graduate Relation between de Sitter and Poincare Groups
- Raifeartagh
- · Replies 2 ·
Graduate Calculating Radiation Measured from Moving Star
- asras
- · Replies 4 ·
Graduate Time at the center of a black hole?
- flyinjoe
- · Replies 2 ·
Graduate System & Environment in Gravity: Is There a Global Theory?
- sadegh4137
- · Replies 1 ·
Graduate A physical description of some GR concepts
- R136a1
- · Replies 6 ·
Graduate Inertial reference frames in general relativity
- analyst5
- · Replies 13 ·
Graduate Black Hole Complementarity Question
- PeterDonis
- · Replies 12 ·
Graduate Why is Scalar Cam Built with Second-Order Derivative of Metric Ricci Scalar?
- sadegh4137
- · Replies 1 ·
Undergrad Thought experiment of relativity
- ranjitnepal
- · Replies 4 ·
High School Understanding the Twin Paradox: A Simple Explanation
- ranjitnepal
- · Replies 7 ·
Graduate Find Solutions to Black Hole Questions
- sadegh4137
- · Replies 5 ·
Graduate Can Acceleration and Gravity Equally Affect Time Dilation?
- Maartenn100
- · Replies 2 ·
Graduate Can We Harness Energy from Light to Power Space Travel?
- shawneric
- · Replies 12 ·
Graduate The Structure of Galilean Space
- littleHilbert
- · Replies 8 ·
Undergrad Gravitational Constant (Big G I think)
- p1l0t
- · Replies 8 ·
Graduate Simplifying Equation (14) from Zee's Einstein Gravity for PhD Students
- russelljbarry15
- · Replies 3 ·
Graduate What Direction is Light Observed From a Moving Source.
- T0mr
- · Replies 10 ·
Graduate Schwarzenchild vs Minkowski: 4-Space & EigenValues
- Philosophaie
- · Replies 1 ·
Graduate Deriving formula ∆t=Lv/c^2 using special relativity
- DonutMaster
- · Replies 2 ·
Graduate How can a particle coming from infinity get on bound orbit around BH?
- Eudaimon
- · Replies 11 ·
Graduate Particles traveling back in time
- michael879
- · Replies 52 ·
High School Where Are the Boundaries of the Universe and How Can We Measure Them?
- anuraj.b
- · Replies 6 ·
Graduate Moving faster than light in Schwarzshield radius
- Dreak
- · Replies 10 ·
Graduate Does an explicit list of 20 independent compenents of Riemman exist?
- ozone
- · Replies 6 ·
Graduate Action & Reaction: Equal Opposites
- Naveen3456
- · Replies 70 ·
Graduate Space and Earth's (and other planet's) movement through it
- Menaus
- · Replies 5 ·
Graduate Checking if Schwarzschild Space-Time is Locally Minkowskian
- jk22
- · Replies 1 ·
Graduate The Physics of Length Contraction of physical objects and distances
- mikiel
- · Replies 29 ·
Graduate Calculating M from Charge & Angular Momentum in Black Hole
- michael879
- · Replies 3 ·
Undergrad Lorentz transform low velocity limit
- geoduck
- · Replies 10 ·
Graduate Exactly Why C is impossible for Massive Objects?
- AndromedaRXJ
- · Replies 52 ·
Graduate Photon mass - clarification request
- brenan
- · Replies 15 ·
Graduate Understanding Acceleration and Geodesics in Curved Spacetime
- DiracPool
- · Replies 7 ·
Graduate Is the Modified Lagrangian Formula Correct in Ray D Inverno Problem 11.5?
- Duvan_Br
- · Replies 1 ·
Graduate Connected Space-Times: Why is it Assumed in General Relativity?
- WannabeNewton
- · Replies 38 ·
Undergrad What are the accepted theories for the source of gravity?
- ZionsRodeVos
- · Replies 40 ·
Graduate Why Is General Relativity Nonlinear Compared to Other Fundamental Equations?
- hilbert2
- · Replies 8 ·
Graduate How Does Special Relativity Explain Particle Attraction?
- analyst5
- · Replies 5 ·
Graduate Seeing the entire future of the Universe
- Naty1
- · Replies 2 ·
Graduate (Almost) Black Hole = Fast Space Ship?
- GurSybngvatOen
- · Replies 19 ·
Graduate Total energy derivation: energy as a time component of a four-vector
- Raze
- · Replies 7 ·
Undergrad How Does Time Dilation Affect Clocks at Different Speeds?
- MathJakob
- · Replies 12 ·
Graduate Relativistic Energy Derivation math problem
- michael154
- · Replies 5 ·
Graduate Recommended reading on Kaluza-Klein theories.
- center o bass
- · Replies 3 ·
Graduate What is the dielectric momentum density 4-vector?
- phys12345
- · Replies 18 ·
Graduate Time slowing down due to speed relative to the observer
- grantcallaway
- · Replies 5 ·
Graduate The consistency of the speed of light
- |mathematix|
- · Replies 5 ·
Graduate Lorentzian 2-Manifold Local Conformal Flatness: Explained
- Infrared
- · Replies 2 ·
Graduate Do I arrive before a light-speed train if I jump off the front?
- Sweep
- · Replies 4 ·
High School Motion to Rest: What Does the Universe Agree On?
- Naveen3456
- · Replies 14 ·
Graduate Math Questions in Lorentzgroup: Covariance/Contravariance Explained
- Dreak
- · Replies 4 ·
Graduate A question on a tweek of the Twin Paradox
- Zeno Marx
- · Replies 22 ·
High School Why Can't I See the Earth Rotating Below Me?
- nil1996
- · Replies 11 ·
Graduate Who first studied variable speed of light? - Einstein
- phys12345
- · Replies 25 ·
Graduate Speed of Light: Universe's Expansion After Big Bang
- Alpharup
- · Replies 7 ·
Graduate What does it mean: transforms like a vector
- birulami
- · Replies 14 ·
Graduate Rank-2 tensor: multiple definitions
- fairy._.queen
- · Replies 8 ·
Graduate Does gravity affect to wavelengths?
- Keru
- · Replies 2 ·
Graduate The importance of the relative movement
- PhyHunter
- · Replies 5 ·
Graduate Weyl tensor in 2 dimensions- confused
- zn5252
- · Replies 2 ·
Graduate Understanding the Passage of Objects through the Event Horizon of a Black Hole
- ShamelessGit
- · Replies 22 ·
Graduate Relativity and matter by Pauli
- TrickyDicky
- · Replies 13 ·
Graduate Applying Forces to Particles: Questions Answered
- res3210
- · Replies 6 ·
Undergrad Caught Between Two Gravitational Fields
- James Brady
- · Replies 11 ·
Graduate Is General Relativity Dependent on the Existence of a Manifold?
- friend
- · Replies 1 ·
Graduate Birkhoff's Theorem: Exterior Solution to Einstein's Field Equations
- maxverywell
- · Replies 5 ·
Graduate Why Does Space/Time Not Cause Friction?
- B.L.E.V.E.
- · Replies 3 ·
Graduate When Clocks Meet: Investigating Time in Einstein's Special Relativity
- Alasdair Beal
- · Replies 8 ·
Graduate Exercise 2.5 in Misner, Thorne and Wheeler
- TerryW
- · Replies 2 ·
Graduate Pushing with a lorentz contracting stick
- jartsa
- · Replies 3 ·
Graduate Is the Sun invisible at relativistic speeds? Part II
- tionis
- · Replies 86 ·
Graduate Quick question, Komar integral derivation in Wald
- WannabeNewton
- · Replies 6 ·
Undergrad Speed of Gravity: 299792458 m/s?
- Baluncore
- · Replies 8 ·
Graduate Relativity in a Rotating Space Station
- kaikalii
- · Replies 29 ·
Graduate Black holes , gravity upper limit
- Crazymechanic
- · Replies 4 ·
Graduate Recommendaton for Clarifying Special Relativity
- bobc2
- · Replies 124 ·
Graduate Formulating Position Vector with f(t)
- Philosophaie
- · Replies 2 ·
Graduate Can Observers See the Future in Relativity?
- analyst5
- · Replies 15 ·
Graduate Finding the 4x4 Cofactor of a Covariant Metric Tensor g_{ik}
- Philosophaie
- · Replies 1 ·
Graduate Maxwell's Equations in Curved Space-time
- Infrared
- · Replies 5 ·
Graduate Reconciling APOD BH Videos w/ Physics Forums Discussion
- anorlunda
- · Replies 1 ·
Graduate Classification of Gravitational Theories
- sadegh4137
- · Replies 2 ·
Graduate Why do objects fall through curvature of spacetime?
- SteveDC
- · Replies 1 ·
Graduate Is a Topological Action Defined by the Underlying Space?
- Raifeartagh
- · Replies 1 ·
Graduate Singularity Mechanics? Blackhole Spin
- TWest
- · Replies 20 ·