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 How did Einstein derive E=mc²?
- WARGREYMONKKTL
- · Replies 17 ·
Graduate Lorentz transform as a complex function
- quaternion
- · Replies 6 ·
Graduate Highschool student interested in cosmology
- heliocentricprose
- · Replies 9 ·
Graduate What Are the Energy and Wavelength Limitations of Light?
- ubavontuba
- · Replies 4 ·
Graduate Space-Time Geometry: Consequences of Minkowski's Relativity
- bernhard.rothenstein
- · Replies 6 ·
Undergrad Why can't you see the outside universe from inside a black hole?
- RAD4921
- · Replies 4 ·
Graduate Why Is the Position 4-Vector Contravariant While the Del Operator Is Covariant?
- Oxymoron
- · Replies 13 ·
Graduate How does Einstein's theory explain gravity's effect on Earth's curvature?
- varsha
- · Replies 4 ·
Graduate How Does Weak Coupling Between Matter and Space-Time Affect Cosmic Structures?
- wolram
- · Replies 5 ·
Graduate Is the speed of light measurement dependent on local clocks?
- kmarinas86
- · Replies 4 ·
Graduate Antigravity like soluctions of Einstein equations
- Sauron
- · Replies 3 ·
Undergrad The Significance of C in Einstein's Famous Equation E=MC^2
- Darwin
- · Replies 11 ·
Graduate Understanding Kinetic Energy in Special Relativity
- finchie_88
- · Replies 8 ·
Graduate A variation on the twin paradox
- dicerandom
- · Replies 133 ·
Graduate A positronium atom decays into two photons c+c=c
- Loren Booda
- · Replies 6 ·
Graduate Is the Sagnac effect a valid argument against Relativity?
- wisp
- · Replies 8 ·
Graduate Relativistic Dynamics: Conservation Laws Necessary?
- bernhard.rothenstein
- · Replies 4 ·
Undergrad If I travel at near light speed for 10 years, how far from Earth am I?
- magi
- · Replies 15 ·
Graduate How do Orbits behave as orbital velocities become significantly relatavistic
- Soul Surfer
- · Replies 8 ·
High School Einstein's Childhood: The Roots of SR?
- one_raven
- · Replies 1 ·
Graduate GR, SR and the Sagnac effect question
- TheAntiRelative
- · Replies 6 ·
Graduate What is the constant velocity curve of an accelerating spaceship?
- pervect
- · Replies 23 ·
Graduate Free resources on magnetism as a relativistic effect
- gulsen
- · Replies 2 ·
High School Kumar's Explanation of the Twin Paradox
- sampath_phy
- · Replies 10 ·
Graduate What Angular Velocity is Required for Relativistic Effects?
- stunner5000pt
- · Replies 1 ·
Graduate There is no really good definition of mass?
- bernhard.rothenstein
- · Replies 12 ·
Graduate Gravity/acceleration equivalent?
- ubavontuba
- · Replies 86 ·
Graduate Infinity in Finite Proper Time
- George Jones
- · Replies 0 ·
Graduate Rotations in special relativity
- haushofer
- · Replies 7 ·
Graduate Calculating Time Dilation for Travel to Alpha Centauri
- daenku32
- · Replies 4 ·
Graduate What is the Relativator and How Does It Explain the Theory of Relativity?
- robphy
- · Replies 1 ·
Graduate Photons in the derivation of relativistic equations
- bernhard.rothenstein
- · Replies 4 ·
Graduate Concerns about ontological interpetations of Theory of Relativity
- AnssiH
- · Replies 70 ·
Graduate Does time have a pace separate from the flow of time itself?
- octelcogopod
- · Replies 2 ·
Graduate Can Superluminal Expansion Really Exceed the Speed of Light?
- mitchellmckain
- · Replies 13 ·
Graduate Is Lambda a True Force or Merely a Geometric Distortion in Spacetime?
- Gerinski
- · Replies 7 ·
Graduate Schwarzchild and Reissner-Nordstrom singularities
- AlphaNumeric
- · Replies 1 ·
Undergrad Not able to fully understand what im reading
- hiram_sua
- · Replies 3 ·
Graduate Can traveling perpendicular to the direction of motion affect time dilation?
- Wizardsblade
- · Replies 14 ·
Graduate Is gravity the cause of inertial acceleration, not equivalent to it?
- tbitz
- · Replies 14 ·
Graduate Different speeds of light w/ Planck Units
- pr0pensity
- · Replies 3 ·
Graduate Faster than light communication and signals moving backwards in time
- robousy
- · Replies 10 ·
High School Do you age faster in space than on Earth?
- deadmoon
- · Replies 19 ·
Graduate Momentum and penetration depth
- bernhard.rothenstein
- · Replies 2 ·
Graduate Traveling at Light Speed: Is the Speed Constant?
- Mr. dude
- · Replies 1 ·
Graduate Can we project a 4D object onto the 3D world?
- neutrino
- · Replies 2 ·
High School If C cannot be achieved, then how can light achieve C?
- itari1985
- · Replies 11 ·
Graduate What does it mean that information propagates at the speed of light?
- asdf60
- · Replies 1 ·
Graduate Do photons experience the passage of time?
- Jesus Rodriguez
- · Replies 32 ·
Graduate Question on speed(of light that is)
- Enkiadu
- · Replies 5 ·
Graduate A Puzzling Paradox: Can Light Reach Infinite Velocity?
- Paindealer
- · Replies 3 ·
Undergrad My Black Hole Theory: Ely Curless
- Ely Curless
- · Replies 3 ·
Graduate How light is deflected by gravitational field
- vaishakh
- · Replies 14 ·
Graduate Why is space-time 3+1 dimensional?
- bchui
- · Replies 1 ·
Graduate How Can Objects Be Compressed Beyond Their Physical Space?
- dpitluk
- · Replies 5 ·
Graduate First experimental verification of GR
- Nucleonics
- · Replies 6 ·
Graduate Is the Changing Clock Rate in Relativity Directionally Dependent?
- yogi
- · Replies 186 ·
Graduate Is the Riemann tensor always zero for the Rindler metric?
- Mike2
- · Replies 16 ·
Graduate Can a photon get trapped in orbit around a black hole?
- miscellanea
- · Replies 2 ·
Graduate How Does the Twin Paradox Affect Time Perception in Accelerating Spaceships?
- dreamsfly
- · Replies 18 ·
Graduate Why does Schutz require g_11=g_22=g_33=(1+2φ) in the Newtonian limit?
- hellfire
- · Replies 3 ·
Graduate Faster than the speed of Light ?
- Physics_Kid
- · Replies 16 ·
Graduate How Can I Calculate Time Dilation Between Two Observers?
- crazynut52
- · Replies 3 ·
Graduate Does a wristwatch measure imaginary time?
- DiamondGeezer
- · Replies 11 ·
Graduate How can the Komar mass formula be simplified for a general static metric?
- pervect
- · Replies 2 ·
Undergrad How Can Light Have Mass Yet Fail to Escape a Black Hole?
- sclancy
- · Replies 19 ·
Graduate Searching for Ricci Scalar in Schwarzschild Metric
- touqra
- · Replies 2 ·
Graduate Does light exist if time stops at the speed of light?
- munky99999
- · Replies 79 ·
Graduate Relativistic Velocity: Can I Run Faster Than Light?
- profilexis
- · Replies 4 ·
Graduate Imaginary Mass: Understanding Tachyons
- gyroverse
- · Replies 4 ·
Graduate Bus that is travelling at the speed of light
- brags
- · Replies 25 ·
Graduate What Are the Time Frame Differences Between Us and Quasars?
- mee
- · Replies 7 ·
Graduate Vacuum with cosmological constant
- pervect
- · Replies 9 ·
Graduate Relativistic Apple: Feel Gravitational Effects?
- diracbracket
- · Replies 4 ·
Graduate Does general relativity predict expansion?
- Oxymoron
- · Replies 18 ·
Graduate Fields and relativity - a broad question
- Nereid
- · Replies 1 ·
High School How does relativistic mass increase and length contraction occur?
- young physical
- · Replies 9 ·
Graduate Relativistic velocities of uncharged particles
- reykjavikingur
- · Replies 14 ·
Undergrad Is Time Travel to the Past Possible with Modern Technology?
- atse1900
- · Replies 2 ·
Graduate Length contraction and special relativity
- Karthikeyan
- · Replies 23 ·
Graduate Is E=mc^2 Confirmed with High Accuracy? NIST Experiment Provides Strong Evidence
- selfAdjoint
- · Replies 1 ·
Undergrad Why Don't Singularities Instantly Suck Everything In?
- uknova
- · Replies 3 ·
Graduate The Foundations of Relativity II
- Oxymoron
- · Replies 17 ·
Graduate Is the Muon's Perception of Distance Correct in Relativity?
- Oxymoron
- · Replies 6 ·
Graduate How Does Our Movement Through Spacetime Influence the Perception of Time?
- AlbertE
- · Replies 31 ·
Undergrad This is probably just a coincidence, but
- Trepidation
- · Replies 10 ·
Graduate What Would a Traveler See When Falling into a Black Hole?
- skywolf
- · Replies 3 ·
Graduate Time variation in the event horizon
- varsha
- · Replies 2 ·
Graduate Is Acceleration Impacting Time Perception a Solvable Paradox?
- fozed
- · Replies 13 ·
Graduate What axioms does the spacetime metric satisfy?
- Oxymoron
- · Replies 86 ·
Graduate How can both space travelers age less than each other in the triplet paradox?
- Anders Lundberg
- · Replies 12 ·
High School Why is c Squared in the Equation e=mc^2?
- jhe1984
- · Replies 9 ·
Graduate The Logic Behind Einstein's Relativity of Time
- Ragnar Thor
- · Replies 39 ·
Graduate Event horizon vs apparent horizon in terms of trapped surfaces
- Vagelford
- · Replies 13 ·
Graduate What Determines the Size and Density of a Black Hole?
- Physics101
- · Replies 6 ·
Graduate Why do objects follow curved trajectories under Earth's gravity?
- Ratzinger
- · Replies 50 ·
Graduate Can teleportation occur without wormholes?
- Harmony
- · Replies 11 ·
Graduate Schwarzschild Metric with multiple masses
- DiamondGeezer
- · Replies 4 ·
Graduate Distorted, structure (3D) vs warped, fabric (2D)
- Boffin
- · Replies 6 ·
Graduate How to imagine distorted space
- Neitrino
- · Replies 10 ·