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 How many independent components are there in the Einstein equations?
- maxverywell
- · Replies 6 ·
Graduate Velocity & Gamma Factor of Proton
- Abigale
- · Replies 2 ·
Graduate Why Don't Earth and the Moon Emit Gravity Waves Like Neutron Stars?
- enceladus_
- · Replies 7 ·
Graduate Is there a minimum mass for black holes?
- JK423
- · Replies 5 ·
Graduate Time Dilation Video Feed Experiment
- zinzin
- · Replies 5 ·
Graduate A perfectly flat bucket of water?
- Wes Tausend
- · Replies 24 ·
Graduate Can Affine Parameters Be Used to Describe Null Curves in GR?
- center o bass
- · Replies 7 ·
Graduate The Modern Geometric View of Black Holes
- center o bass
- · Replies 16 ·
Undergrad Confused on how to calculate invariant interval.
- ash64449
- · Replies 17 ·
Graduate What is Minkowski Space and Its Role in Understanding Relativity?
- ash64449
- · Replies 28 ·
Undergrad Why measuring one-way trip impossible?
- ash64449
- · Replies 43 ·
Graduate Does Velocity or Acceleration Determine the Energy of a Moving Object?
- DiracPool
- · Replies 63 ·
Graduate Question about value of the metric tensor and field strength
- 49ers2013Champ
- · Replies 3 ·
Graduate What Ingredients Can Make an Observer?
- bcrowell
- · Replies 1 ·
Graduate Is the Cosmic Microwave Background an Absolute Frame of Reference?
- mrcotton
- · Replies 7 ·
Graduate Is spacetime independent of its universe?
- Seminole Boy
- · Replies 73 ·
Graduate Time Dilation Thought Experiment
- mcjosep
- · Replies 4 ·
Graduate Is a Universal Clock Possible? Answers Here
- jalak7
- · Replies 5 ·
Graduate Speed of light and relations to mass
- chgol5270
- · Replies 5 ·
Graduate What math do you need to know to solve EFE
- Pseudo Epsilon
- · Replies 4 ·
Graduate When is something Lorentz invariant.
- Dreak
- · Replies 1 ·
Graduate Anisotropic instead of isotropic metric deriving acceleration
- Agerhell
- · Replies 2 ·
Graduate Understanding Classical Fields in General Relativity
- TrickyDicky
- · Replies 16 ·
Graduate The Arc of Space Curvature: Large and Small
- Ahmed Samra
- · Replies 30 ·
Graduate Understanding the Minkowski Metric: Explained Step-by-Step for Beginners
- shounakbhatta
- · Replies 36 ·
Graduate Energy shift in a photon passing by a gravitational well
- elevin
- · Replies 12 ·
Graduate Can the No-Interaction Theorem Coexist with Relativistic Particle Dynamics?
- J.F.
- · Replies 12 ·
Graduate The ratio between temporal lengths is frame-invariant
- Philosoph
- · Replies 8 ·
Undergrad Is this an acceptable way to describe gravity
- 49ers2013Champ
- · Replies 10 ·
Graduate Deriving Relations in Relativistic Mechanics: dE/dt = dm/dt?
- exmarine
- · Replies 5 ·
Graduate I'm standing on a black hole, is light approaching red or blue?
- elevin
- · Replies 40 ·
Graduate Relation between coordinate time and proper time
- ash64449
- · Replies 78 ·
Graduate Relativity Paradox – RoS: Trains, Tunnels & Guillotines
- DevilsAvocado
- · Replies 18 ·
Graduate Redshifting of forces in stationary space - times
- WannabeNewton
- · Replies 66 ·
Graduate Principle of relativity hypothetical question
- kuulbots
- · Replies 7 ·
Graduate Can Light Travel Faster When Moving Towards It?
- edraganov
- · Replies 5 ·
Graduate How Does Relativity Explain Different Observations of the Same Event?
- Jarvis323
- · Replies 7 ·
Graduate Solve Boggling Questions on Relative Speed of Light and Time Dilation
- AshsZ
- · Replies 1 ·
Graduate Finding Radius of Curvature of a Sphere Using Angle Excess
- pervect
- · Replies 3 ·
Graduate Local flatness at r = 0 for star interior spacetime
- FunkyDwarf
- · Replies 3 ·
Graduate He most general form of the metric for a homogeneous, isotropic and st
- MarkovMarakov
- · Replies 6 ·
Graduate Relativity of simultaneity and parthood?
- durant
- · Replies 39 ·
Graduate Question about the curvature of spacetime:
- VeryConfusedP
- · Replies 17 ·
Undergrad Why People in Orbit Appear Weightless: An Elevator Analogy
- Paintjunkie
- · Replies 15 ·
Graduate Travelling the Same speed as a photon
- rabcarl
- · Replies 14 ·
Graduate Gravity: after Einstein, is it really a force?
- Phenylflux
- · Replies 3 ·
Graduate Can you modify this quote regarding time dilation?
- 49ers2013Champ
- · Replies 3 ·
Graduate Do photons warp space like the equivalent energy as mass would?
- bcrelling
- · Replies 18 ·
Graduate Understanding Reference Frames for Observing Real-Time Events
- durant
- · Replies 5 ·
Graduate What is the current explanation for apparent superluminal jets?
- easyrider
- · Replies 2 ·
Graduate Why Use Earth's Center as a Time Reference in Atomic Clock Experiments?
- bwana
- · Replies 14 ·
Graduate NASA Solar Probe Plus to hit 0.067% of c
- zincshow
- · Replies 5 ·
Graduate How long would it take to get to Alpha Centauri?
- yoyopizza
- · Replies 14 ·
Graduate What are the physical mechanisms behind time dilation and its alternatives?
- lakshminarayan
- · Replies 31 ·
Graduate Can Colliding Stars Form a Black Hole Made of Light?
- A.T.
- · Replies 10 ·
Graduate Spacetime Physics (1966) Fig 23 on page 40
- Hacky
- · Replies 2 ·
Graduate Confused about the Equivalence Principle and Inertial Reference Frames
- JPaquim
- · Replies 7 ·
Graduate The relativistic mechanics of spinning discs
- jartsa
- · Replies 16 ·
Graduate Strange Twins Paradox: A Crackpot Physics Mystery | Discover the Solution Here!
- JohnWisp
- · Replies 59 ·
Undergrad Is this simple derivation of length contraction and time dilation corr
- ash64449
- · Replies 24 ·
Graduate Travelling towards distant stars
- User11037
- · Replies 16 ·
Graduate Constructing the Einstein Field Equation
- MarkovMarakov
- · Replies 2 ·
Graduate Second derivative of a metric and the Riemann curvature tensor
- MarkovMarakov
- · Replies 1 ·
Graduate Lorentz, simultan, radar finds dust grain, inconsistencies
- Albertgauss
- · Replies 5 ·
Graduate Quote about movement through spacetime that is confusing me:
- VeryConfusedP
- · Replies 6 ·
Graduate Simultaneity in Special Relativity
- disgradius
- · Replies 8 ·
Graduate Question on relativity of movement
- Gerinski
- · Replies 12 ·
Graduate Relativistic Forces: Confirm Resnick's Results?
- exmarine
- · Replies 6 ·
Graduate Evidence of Electromagnetic fields causing spacetime curvature?
- physwizard
- · Replies 9 ·
Undergrad Is the Einstein equation E=Mc^2 correct?
- michaelser
- · Replies 7 ·
Graduate Time Travel, Space Travel, Speed The Earths Movement, Speed Of Light
- phys-if
- · Replies 3 ·
Undergrad Why speed of light is measured same regardless of their speed?
- adjacent
- · Replies 96 ·
Graduate Constant acceleration from accelerated observer's perspective
- Whovian
- · Replies 3 ·
Graduate Kruskal Diagram Hyperbola Function
- philipp2020
- · Replies 4 ·
Undergrad Relativity and the speed of time
- spaceanon
- · Replies 25 ·
Graduate Initial Value Formulation on curved space-time: Maxwell's equations
- WannabeNewton
- · Replies 20 ·
Graduate Solving the Mystery of Notation in a Paper - gr-qc/9611042v1
- Mentz114
- · Replies 2 ·
Graduate Is the GR explanation for how gravity moves things?
- bcrelling
- · Replies 16 ·
Graduate Why isn't there such a thing as an invariant velocity for all objects?
- Xilor
- · Replies 12 ·
High School Gravity & Time: Clocks at Sea Level vs Mountain
- Ahmed Samra
- · Replies 10 ·
High School Will a Sun Collapse Form a Black Hole?
- Ahmed Samra
- · Replies 3 ·
Graduate Mass Increase and Distances: Red Shift or Blue Shift?
- nurica
- · Replies 16 ·
Graduate Einstein and Newton and gravity
- Ahmed Samra
- · Replies 3 ·
High School Collapsing Sun: Will It Get Smaller & Denser?
- Ahmed Samra
- · Replies 1 ·
Graduate Thought experiment involving spacetime curvature:
- VeryConfusedP
- · Replies 4 ·
Undergrad Distance change due to gravity
- nurica
- · Replies 24 ·
Graduate Recovering Forces from Christoffel Symbols: A Derivation
- pervect
- · Replies 0 ·
Graduate Extending the Lorentz force equation to accommodate SR
- MarkovMarakov
- · Replies 11 ·
Undergrad The atomic clock on a jetliner experiment
- jaydnul
- · Replies 4 ·
Graduate A series of questions regarding Gravity:
- VeryConfusedP
- · Replies 17 ·
Graduate Is light a carrier to bring all the way of motion image of dead star?
- mark.alen
- · Replies 8 ·
Undergrad What is Einsteins Paradigm Shift?
- JM
- · Replies 21 ·
Graduate Does Gravity Affect the Passage of Time on Different Planets?
- IkeB777
- · Replies 11 ·
Graduate Inverse of Operator: Is it True?
- Halphy
- · Replies 1 ·
Graduate Solving field equations and the nonphysical nature of the metric. (GR)
- center o bass
- · Replies 13 ·
Graduate Energy & Gravity: Why Does Matter Curve Space?
- adjacent
- · Replies 1 ·
Graduate Do Centrifugal Forces Affect Clock Time Dilation?
- sigurdW
- · Replies 5 ·
Graduate What is energy in reality, is it PHOTON?
- suchal
- · Replies 22 ·
High School Is relative motion different from acceleration?
- VeryConfusedP
- · Replies 6 ·
High School How far is this definition of time correct?
- aleemudasir
- · Replies 33 ·