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 Forumulation of field equations
- captain
- · Replies 1 ·
Graduate Geodesics and stretched strings
- oldman
- · Replies 29 ·
Graduate Understanding the Nature of Gravity and its Relationship to Energy Creation
- shamrock5585
- · Replies 6 ·
Graduate Drawing Penrose diagram figures
- Neptusoft
- · Replies 1 ·
Graduate Is Special Relativity Incomplete Without Considering Intrinsic Momentum?
- Goccam
- · Replies 10 ·
Graduate Special Theory and String Theory.
- D.A.Peel
- · Replies 6 ·
Graduate Are relativistic effects real ?
- stillwonder
- · Replies 71 ·
Graduate Why does light from a moving spaceship reach stationary observers?
- Ransom
- · Replies 25 ·
Undergrad How does light recoil off a box if light doesn't accelerate?
- shamrock5585
- · Replies 11 ·
Graduate Why does the moving clock show less time in the 1971 Hafele-Keating experiment?
- shinta
- · Replies 2 ·
Graduate Doppler-shift/hubbles-law implies big bang/universe age?
- Peeter
- · Replies 11 ·
Graduate Does temperature affect the speed of time between systems?
- shameny
- · Replies 1 ·
Graduate Why is the Doppler shift expression sometimes reversed?
- Vuldoraq
- · Replies 7 ·
Graduate Does moving toward B differ from spacetime warping between A and B?
- matthewmussen
- · Replies 5 ·
Graduate Invarients for 4-vector quantites.
- Peeter
- · Replies 9 ·
Graduate Relative Time Question: Train Experiment and Conflicting Views
- Alex48674
- · Replies 2 ·
Graduate Vacuum Solutions: Are They Always Divergence Free?
- quasar_4
- · Replies 5 ·
Graduate Is Spacetime Flat in Uniform Gravitational Fields and Acceleration?
- Dale
- · Replies 27 ·
Graduate Is inertial mass of gas the same as its rest mass
- kahoomann
- · Replies 1 ·
Graduate Is There an Absolute Time When Events Occur?
- goodensn
- · Replies 32 ·
Graduate Determined c in S v. Result of the Michelson_Morley Exp.
- arbol
- · Replies 4 ·
Graduate What Physical Meaning Underlies the Non-Divergence of the Einstein Tensor?
- snoopies622
- · Replies 3 ·
Undergrad Does Light Curving Around the Sun Prove It Has Weight?
- myswhatevr
- · Replies 4 ·
Graduate Can light have a phase velocity faster than c?
- redtree
- · Replies 4 ·
Graduate Space/time separation ratio in Lorentz transformation
- adimare
- · Replies 4 ·
Graduate Lengths and times relative to S' and S
- arbol
- · Replies 3 ·
Undergrad Why does F=ma fail at speeds approaching light speed?
- rocky14159
- · Replies 56 ·
Graduate The Michelson-Morley experiment
- arbol
- · Replies 8 ·
Graduate Why do charged particles in Čerenkov radiation produce a blue glow?
- Ed Aboud
- · Replies 10 ·
High School Did Einstein guess the time-dilation equation?
- Brainv2.1beta
- · Replies 11 ·
Graduate Can a disc achieve Born rigid rotation in special relativity?
- Fredrik
- · Replies 1 ·
Graduate Strange Paradox: Rockets' Clocks Syncing
- neh4pres
- · Replies 3 ·
Graduate Actual and observed time dialation
- neh4pres
- · Replies 8 ·
Graduate What kind of math is needed to understand relativity
- bennington
- · Replies 3 ·
Graduate Can a single laser beam preserve simultaneity in both reference frames?
- rq704c
- · Replies 58 ·
Graduate In what direction does length contraction occur?
- Flexo
- · Replies 7 ·
Undergrad Albert Einstein 1911 "On the Influence of Gravity on Light
- spidey
- · Replies 5 ·
Graduate Development of generalized metric
- friend
- · Replies 2 ·
Graduate Can electromagnetism be described as spacetime geometry like gravity?
- GRB 080319B
- · Replies 5 ·
Graduate Tensor Manipulation in Spacetime and Geometry
- bdm000
- · Replies 3 ·
High School Awe-Inspiring Gravity Waves: An Exploration
- blimkie.k
- · Replies 1 ·
Graduate Why does Dick receive more signals from Jane on his return trip in the twin paradox?
- jk4
- · Replies 7 ·
Graduate Relativistic rocket top speed, time dilation, and event horizon angle
- neh4pres
- · Replies 22 ·
Graduate Why doesn't the universe expand on small scales?
- Fredrik
- · Replies 45 ·
Graduate Length contraction and time dilaton
- bernhard.rothenstein
- · Replies 34 ·
Graduate ON THE ELECTRODYNAMICS OF MOVING BODIES by A.EINSTEIN
- calis
- · Replies 16 ·
Graduate Perturbing the Schwarzschild metric
- lark
- · Replies 4 ·
Graduate Derive E=mc^2 from relativistic kinetic energy and photons
- ehj
- · Replies 24 ·
Graduate Equivalence of Time Dilation in Different Gravitational and Accelerating Frames
- Chrisc
- · Replies 80 ·
High School What is the history and difference between special and general relativity?
- payam.a
- · Replies 3 ·
Graduate Twin aging without acceleration or frame changes
- Al68
- · Replies 51 ·
Graduate Preferred Frames not in SR are used in Astrophysics
- RandallB
- · Replies 27 ·
Graduate Ok so u have two twins, both have clocks set to zero.
- neh4pres
- · Replies 5 ·
Graduate Defining velocity, momentum and energy from Lorentz transformations
- fcsc
- · Replies 7 ·
Graduate Lightwave moving towards/upwards curvature
- Domenicaccio
- · Replies 7 ·
Graduate Is the Covariant Derivative of the Metric Tensor an Axiom or a Derivation?
- snoopies622
- · Replies 30 ·
Graduate Why does the relativistic Doppler formula allow solving for v<c for any redshift?
- jostpuur
- · Replies 18 ·
Graduate How do relativity explain elliptical orbits of planets?
- niin
- · Replies 33 ·
Graduate Experimental Data: Light Velocity Change
- Wizardsblade
- · Replies 6 ·
Graduate Age of universe-speed of light
- neh4pres
- · Replies 10 ·
Graduate Learning General Relativity Formulas
- neh4pres
- · Replies 1 ·
Graduate Does measuring Earth's surface area from Earth give 4π²R² instead of 4πR²?
- rohanprabhu
- · Replies 6 ·
Graduate How Does the Speed of Light in Glass Change with Relative Velocity?
- yuiop
- · Replies 19 ·
Graduate Can frames of reference affect the perception of light and time?
- neh4pres
- · Replies 6 ·
Graduate How Does Relativity Affect Our Perception of Light and Time?
- neh4pres
- · Replies 4 ·
Undergrad What is the relationship between fields and mass in physics?
- worwhite
- · Replies 8 ·
Graduate Does the EP Violate in Two Mass Test?
- paw
- · Replies 19 ·
Graduate Twin paradox with identical acceleration histories
- yuiop
- · Replies 22 ·
Graduate Does pressure resist acceleration?
- Xeinstein
- · Replies 89 ·
Graduate What Will the Clock Read at the Turnaround Point in the Twins Paradox?
- Al68
- · Replies 4 ·
Graduate Does the Curvature of 4-D Space-Time Extend into a Fifth Dimension?
- engstudent321
- · Replies 6 ·
Graduate Can Time Run Backwards for Objects Larger Than the Schwarzschild Radius?
- granpa
- · Replies 22 ·
Graduate Which Clock Shows Less Time When They Collide?
- AntigenX
- · Replies 96 ·
Graduate Do Moving Train Tracks Appear Shorter Due to Length Contraction?
- HarleQuinnt
- · Replies 1 ·
Graduate Is Time Just an Arbitrary Measurement or a True Dimension?
- zazaphys
- · Replies 8 ·
High School Do visual effects occur when approaching the speed of light?
- 2.45ghz
- · Replies 13 ·
Graduate Bell's spaceship paradox visualized in two frames
- yuiop
- · Replies 104 ·
Graduate What is the Andromeda Paradox and its implications for time travel?
- Count Iblis
- · Replies 1 ·
Graduate Does Travel Distance Affect Aging in the Twin Paradox?
- kahoomann
- · Replies 12 ·
Graduate Prove that 4 vector potential is really a 4 vector?
- LHS1
- · Replies 59 ·
Graduate Can you prove a theorem from Bergmann chapter 8 using Fig. 8?
- supakorn
- · Replies 3 ·
Undergrad EM Field Generation and Energy: A Simple Explanation
- worwhite
- · Replies 9 ·
Graduate Which is the densest star and how much does it bend light rays?
- Ulysees
- · Replies 2 ·
Graduate Lorentz contraction from space-time interval invariance
- bernhard.rothenstein
- · Replies 30 ·
Graduate Twin paradox with equal proper acceleration on both twins
- yuiop
- · Replies 63 ·
Graduate What does it mean for time and space to be continuous?
- Adam Khan
- · Replies 13 ·
Graduate Understanding Basis Vectors for Tensor Differentiation
- snoopies622
- · Replies 12 ·
Graduate Universal expansion velocity SR or GR?
- duordi
- · Replies 6 ·
Graduate Is acceleration the cause of time dilation and synchronization discrepancies?
- AntigenX
- · Replies 21 ·
Graduate How Do Time Dilation and Space Expansion Affect Gravitational Redshift?
- mysearch
- · Replies 70 ·
Graduate Can a 4D Schwarzschild Manifold be Embedded in 5D Hyperspace?
- snoopies622
- · Replies 14 ·
Graduate What is the equation for time dilation in gravitational fields?
- Wizardsblade
- · Replies 12 ·
Graduate Understanding General Relativity without Tensors
- abc.def
- · Replies 2 ·
Graduate How does general relativity explain why objects fall toward Earth?
- aachenmann
- · Replies 4 ·
Graduate What is the difference between Lorentz invariant and Lorentz covariant?
- neopolitan
- · Replies 8 ·
Graduate Is Einstein's simultaneity convention fundamental or just convenient?
- Ken G
- · Replies 152 ·
Graduate How Does Relativity Redefine Motion in Physics?
- Chrisc
- · Replies 45 ·
Graduate Time slows at the speed of light
- DianaPrince
- · Replies 1 ·
High School How would the speed of light affect your mass?
- Bonkenhi
- · Replies 9 ·
Graduate Why is the curvature scalar small for the solar system but large at cosmological scales?
- Magister
- · Replies 11 ·