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 Can Geodesic Deviation in Spacetime Incorporate Non-Causal Relationships?
- m4r35n357
- · Replies 1 ·
Undergrad How to tell the difference between acceleration and gravity
- randyu
- · Replies 24 ·
Undergrad Is it possible to tell whether ship is moving or not?
- Meson080
- · Replies 66 ·
Graduate I'm sorry, I'm not sure what your question is. Could you please clarify?
- exmarine
- · Replies 8 ·
Graduate Resolving Symmetric Movement Paradox w/ Respect to Stationary Observer
- Kyojin
- · Replies 1 ·
Undergrad Biking at near the speed of light
- Cosmobrain
- · Replies 44 ·
Graduate Is time present in a black hole?
- Sorthal
- · Replies 33 ·
Graduate Why it is necessary to unite Gravity and other forces
- ggolu2
- · Replies 6 ·
Graduate Special Relativity and Biological Clocks.
- siddharth5129
- · Replies 29 ·
Graduate Dark Energy: Observer Dependent or Absolute Rest Frame?
- Khashishi
- · Replies 1 ·
Graduate Is there evidence that past, present and future exist simultaneously?
- Niaboc67
- · Replies 11 ·
Graduate Affine parametrization for null geodesic?
- stevendaryl
- · Replies 57 ·
Graduate Deriving the relationship between time dilation and gravitational field strength
- ABunyip
- · Replies 9 ·
Graduate If gravity is geometry then why talk about
- Sineira
- · Replies 11 ·
Undergrad Find Refractive Index of Liquid for Observer with Velocity
- Paul Black
- · Replies 9 ·
Graduate Expansion tensor on rotating disk
- Dale
- · Replies 3 ·
Graduate Is Gravity Instant? A Thought-Provoking Question
- zsweyd
- · Replies 23 ·
Undergrad Twins paradox and time dilatation
- Zeor137
- · Replies 23 ·
Graduate Did Einstein have a Physical Interpretation of Frames?
- center o bass
- · Replies 4 ·
Graduate If the speed of light depended on the source's velocity
- homer
- · Replies 11 ·
Graduate Can Alice's Spaceship Experience Enhanced Views and Heat Near Light Speed?
- MAYA
- · Replies 14 ·
Graduate Does a constant force on an object explain why mass approaches infinity at light speed?
- kingofxbox99
- · Replies 5 ·
Graduate Comoving fluids - radiation and matter
- befj0001
- · Replies 9 ·
Graduate Radial motion in the Schwarzshild spacetime
- Theactualbman
- · Replies 38 ·
Graduate Redshift and blueshift in relativistic doppler effect
- qazadex
- · Replies 3 ·
Undergrad Why Do Objects Float in Space Station (SS)?
- paulfr
- · Replies 4 ·
Graduate Speed of light that hits our eyes
- johnny_bohnny
- · Replies 13 ·
Graduate Measuring Relativistic Velocities on Earth: A Question
- johnny_bohnny
- · Replies 1 ·
Graduate Relativistic momentum not conserved in ball collision problem
- Virous
- · Replies 128 ·
Graduate Help deriving action variation in Landau-Lifshitz chapter 2
- electricspit
- · Replies 6 ·
Graduate Can We Define Angles in Flat Spacetime Using Geodesics?
- pervect
- · Replies 6 ·
Graduate Does Light Obey the Same Rules as Matter in Motion?
- dayalanand roy
- · Replies 9 ·
Graduate Two trains moving in opposite directions around the earth
- MnagurnyIII
- · Replies 3 ·
Graduate How do we know mass increases at relativistic speeds?
- Sorthal
- · Replies 23 ·
Graduate Synge: optical observations in GR
- pervect
- · Replies 2 ·
Graduate Is the Sagnac effect a reliable measure of rotation in Kerr space-time?
- RiccardoVen
- · Replies 31 ·
Graduate Where do coordinate transformations and the stress-energy tensor come from in GR?
- Gadhav
- · Replies 5 ·
Graduate In the context of travel near c how is mass defined?
- Logician
- · Replies 29 ·
Graduate Are Bianchi IX Models Truly Homogeneous Yet Not Isotropic?
- befj0001
- · Replies 4 ·
Graduate What are the implications of spatial homogeneity in cosmological models?
- befj0001
- · Replies 2 ·
Graduate How do relativistic effects apply to Earth's rotation and orbit?
- analyst5
- · Replies 89 ·
Graduate Is Mass Dependent on Temperature According to Mass-Energy Equivalence?
- Caledon
- · Replies 91 ·
Graduate How Does Clock Synchronization Work in Different Dimensions?
- analyst5
- · Replies 10 ·
Graduate Time Dilation on Spinning Atoms?
- 1832vin
- · Replies 1 ·
Graduate Changing curvature of a manifold
- ChrisVer
- · Replies 15 ·
Graduate Attaining Threshold Velocity V for Accelerating Object Mass M
- T.M Masike
- · Replies 4 ·
Graduate Understanding Discrete Reversal of Time Direction
- Aziza
- · Replies 3 ·
Graduate Energy-stress tenor = 0 => flat spacetime?
- simoncks
- · Replies 11 ·
Graduate Imagining spacetime curvature more accurately
- HowardHughes
- · Replies 11 ·
Graduate Non-Spooky Action at a Distance
- jeffamm
- · Replies 11 ·
Graduate Can the curved spacetime analogy explain why speed cannot reach c?
- Logician
- · Replies 9 ·
Graduate Length Contraction Paradox Scenario
- bmbuncher
- · Replies 51 ·
Undergrad Higgs field at near light speed
- Devguy101
- · Replies 4 ·
Graduate Why express basis vectors as coordinate partial derivatives in general relativity
- befj0001
- · Replies 2 ·
Graduate Why does the horizon area of a black hole never decrease?
- M. next
- · Replies 5 ·
Graduate Hyperbolic Triangles: Deriving Relationships Algebraically or Geometrically
- electricspit
- · Replies 3 ·
Graduate Identifying System Equality Across Observers
- Logic Cloud
- · Replies 1 ·
Graduate Proving Timelike Killing Vectors for g_{ab},0 = 0
- befj0001
- · Replies 3 ·
Graduate Mass and inertia at high speeds
- johann1301
- · Replies 18 ·
Undergrad Transition from inertial to circular motion
- analyst5
- · Replies 40 ·
Graduate Homogeneous spacetime - Lie groups
- befj0001
- · Replies 7 ·
Graduate Can an Object Falling in Infinite Gravity Break the Speed of Light?
- henrywang
- · Replies 34 ·
Graduate Black hole collapse - ray tracing
- tom.stoer
- · Replies 8 ·
Graduate Transformation of acceleration between two reference frames
- Paul Black
- · Replies 11 ·
Graduate Ricci Tensor Proportional to Divergence of Christoffel Symbol?
- center o bass
- · Replies 3 ·
Graduate How can E=pc apply to a massless photon?
- Quarlep
- · Replies 18 ·
Graduate Is it possible to create a universal calendar/clock?
- Fiziqs
- · Replies 19 ·
Undergrad How would you define an inertial frame of reference?
- Luffy
- · Replies 55 ·
Graduate Two entangled particles One on Earth, the other on a space ship
- Ragnor8
- · Replies 10 ·
Graduate General relativity and accelerated frames
- RiccardoVen
- · Replies 62 ·
Graduate Volume element for null hypersurface
- sadegh4137
- · Replies 7 ·
Graduate Is gravity a by-product instead of a force of nature itself?
- MistrX
- · Replies 1 ·
Graduate "Special" and "General" relativity- Who invented those terms?
- epovo
- · Replies 2 ·
Graduate Can the Oppenheimer-Snyder Collapse Model Account for Variable Mass Inflow?
- tom.stoer
- · Replies 3 ·
Graduate Why does gravity warp space if space is massless?
- apurvmj
- · Replies 14 ·
Graduate Does Time Dilation Really Happen?
- TheJefBob
- · Replies 6 ·
Graduate Derivation of the Tolman-Oppenheimer-Volkoff equation
- maverick280857
- · Replies 1 ·
Graduate Do atoms themselves change size during acceleration or just the spacing between them?
- analyst5
- · Replies 2 ·
Graduate Why shear stress components of the Stress Energy tensor not zero?
- epovo
- · Replies 4 ·
Undergrad Realization we are moving in a system
- ChrisVer
- · Replies 1 ·
Graduate In the block universe, why do I experience this particular moment?
- The thinker
- · Replies 18 ·
Graduate Two particles, constant acceleration in their own frame
- HJ Farnsworth
- · Replies 4 ·
Graduate Do Frame Dependent Charges Radiate?
- jartsa
- · Replies 6 ·
Graduate What is the Relationship Between Cause and Effect in Spacetime Geometry?
- analyst5
- · Replies 16 ·
Graduate Rigorous derivation of E=mc² from special relativity
- omthegreat
- · Replies 6 ·
High School What Determines the Straightness of a Line?
- mkristof
- · Replies 5 ·
Graduate Twin Paradox Without Acceleration ?
- Point Conception
- · Replies 12 ·
Graduate General Relativistic Effects on an Electro-Magnet
- jartsa
- · Replies 2 ·
Graduate Does change in Lorenz contraction w/ respect to time = Lorenz Velocity
- duordi134
- · Replies 27 ·
Graduate Mass, masslessness and the speed of light
- pero2912
- · Replies 3 ·
Graduate Interpreting Einstein Tensor Geometrically on a Manifold
- ChrisVer
- · Replies 1 ·
Graduate Quantitative Meaning of Ricci Tensor
- flyinjoe
- · Replies 6 ·
Graduate Inertial Frame of Reference: Why Space Selects a Non-Inertial Frame
- mark_gg
- · Replies 3 ·
Graduate Where does the relativistic momentum formula p = dX/dT₀ come from?
- Goodver
- · Replies 28 ·
Graduate How/Why does the Mach principle define what is a 'direction'?
- mark_gg
- · Replies 16 ·
Graduate Is Gravity the Same for a Candy Wrapper in a Zero Mass Spaceship?
- duordi134
- · Replies 20 ·
Graduate How Does Lorentz Invariance Affect Two-Particle Lagrangians in SR?
- HomogenousCow
- · Replies 10 ·
Undergrad Is Gravity Really a Pushing Force?
- jkg0
- · Replies 11 ·
Graduate Relative death of people traveling at the speed of light
- grizzly
- · Replies 7 ·
Graduate Lorentz triangle and length contraction perpendicular to propagation
- ANvH
- · Replies 14 ·