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 Doppler-shift/hubbles-law implies big bang/universe age?
- Peeter
- · Replies 11 ·
Graduate Time, Temp & Movement: Amitai's Question
- shameny
- · Replies 1 ·
Graduate Why is the Doppler shift expression sometimes reversed?
- Vuldoraq
- · Replies 7 ·
Graduate Movement & Spacetime: Point A to B Difference
- 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 Help me through a simple SR problem
- adimare
- · Replies 4 ·
Graduate Lengths and times relative to S' and S
- arbol
- · Replies 3 ·
Undergrad Light Speed and Newton's Equation F=ma: Explanation
- rocky14159
- · Replies 56 ·
Graduate The Michelson-Morley experiment
- arbol
- · Replies 8 ·
Graduate Erenkov Radiation: Charged Particles Explained
- Ed Aboud
- · Replies 10 ·
High School Did Einstein guess the time-dilation equation?
- Brainv2.1beta
- · Replies 11 ·
Graduate Question about the rotating disc
- 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 Solve Simultaneity Problem with Alice & Bob
- 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 The Physics of Spacetime & EM: Answers to Questions
- 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 Special relativity: twin paradox
- jk4
- · Replies 7 ·
Graduate Relativistic Rocket: Top Speed & Horizon Angle Explained
- 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: Kinetic Energy, Photons, Lorentz-Transformations
- ehj
- · Replies 24 ·
Graduate Equivalence of Time Dilation in Different Gravitational and Accelerating Frames
- Chrisc
- · Replies 80 ·
High School Please explain a little about general and special relativity
- payam.a
- · Replies 3 ·
Graduate Twins Aged Differently: A Relativity Paradox Explained
- 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 in Minkowski Space
- 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 Redshift Ques: Applying Doppler Formula Can Lead to Error
- 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 What is the true surface area of the Earth according to General Relativity?
- 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 Acceleration and Twins: Resolving the Classic Paradox Without General Relativity
- 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 Speed of Light: Educating Myself & Question
- 2.45ghz
- · Replies 13 ·
Graduate Bell's Spaceships Paradox explained.
- 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 Twins Paradox: Symmetry & Acceleration
- yuiop
- · Replies 63 ·
Graduate What is Meant by Time & Space Being 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 Einstein simultaneity: just a convention?
- 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 Meaning of Curvature Scalar (R) in GR & Its Evolution
- Magister
- · Replies 11 ·
Graduate Newie relativity question: proper time vs. arc length?
- Peeter
- · Replies 8 ·
Graduate Can particles move tangentially around a black hole's event horizon?
- Maniax
- · Replies 12 ·
Graduate Twin Paradox: Understanding Who Ages Less
- AntigenX
- · Replies 124 ·
Graduate Understanding De Broglie's Wave-Frequency Relationship
- redtree
- · Replies 8 ·
Graduate Who Ages More in the Inverse Twin Paradox?
- granpa
- · Replies 1 ·
Graduate Basic thing with general relativity
- jostpuur
- · Replies 3 ·
Graduate Speed of light in a different medium
- uq_civediv
- · Replies 1 ·
Undergrad Time and speed of light problem
- super_kangaro
- · Replies 10 ·
Graduate Description of magnetic field in black holes
- Srr
- · Replies 1 ·
Graduate Solving the Paradox of Length Contraction on a Train
- Flexo
- · Replies 9 ·