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 Locality and non-locality in period measurement
- bernhard.rothenstein
- · Replies 2 ·
Graduate How does the direction of rotation impact time dilation on a rotating object?
- Jorrie
- · Replies 5 ·
Graduate Is Relativity Valid Inside Matter?
- notknowing
- · Replies 13 ·
Graduate Does a rotating disc's circumference contract at relativistic speeds?
- sabin
- · Replies 3 ·
Graduate How Does Gravity Warp Spacetime for a Planet's Path?
- daniel_i_l
- · Replies 19 ·
Graduate What is the relationship between the Doppler effect and proper time?
- bernhard.rothenstein
- · Replies 8 ·
Undergrad Where will the lead and plastic balls settle in microgravity?
- Jorrie
- · Replies 2 ·
Graduate What if inertial mass did NOT = grav. mass?
- smithpa9
- · Replies 92 ·
Graduate Weyl tensor on 3-dimensional manifold
- sroeyz
- · Replies 6 ·
Graduate Are time dilation, length contraction and relativistic mass real or apparent effects?
- MeJennifer
- · Replies 38 ·
Graduate Relativistic and not relativistic motions
- bernhard.rothenstein
- · Replies 2 ·
High School Does light actually slow down in water or just appear to?
- Dao Tuat
- · Replies 3 ·
Graduate Experimenting with the speed of gravity
- \/3RT1G0
- · Replies 10 ·
Graduate Speed of light in an inertial frame
- MeJennifer
- · Replies 9 ·
Graduate Speed of light in a black hole
- rcgldr
- · Replies 1 ·
Graduate Is the Earth Flat? An Analysis of Spacetime Curvature
- markintheworld
- · Replies 3 ·
Graduate Is 'A First Course in General Relativity' good for learning GR?
- Vroomfondel
- · Replies 12 ·
Graduate What is the significance of the weak field approximation in general relativity?
- Thrice
- · Replies 3 ·
Graduate How Does Time Dilation Affect Light Speed from a Moving Spaceship?
- Giulio B.
- · Replies 3 ·
Graduate Gravitational Time Dilation.Or not?
- Riposte
- · Replies 15 ·
Graduate Constant speed of light in vaccum?
- violetS
- · Replies 4 ·
Graduate Contact Aliens: Faster Than Light Speed?
- lockecole
- · Replies 3 ·
Graduate A frame dragging experiment in an accelerated reference frame
- Redhat
- · Replies 5 ·
Graduate Time in SR and relativistic mass
- exponent137
- · Replies 7 ·
Graduate Did the Frame-Dragging Experiment Validate the Theory of Relativity?
- LaPalida
- · Replies 7 ·
Graduate Minkowski's 4 dimensional world
- therapeuter
- · Replies 30 ·
Graduate Spinning Objects in GR: Can a Geodesic be Traveled?
- MeJennifer
- · Replies 6 ·
Undergrad Why does time dilation allow traveling twins to age differently?
- SexyElf
- · Replies 18 ·
Graduate How does mass and energy shape spacetime geometry?
- oldman
- · Replies 12 ·
What's wrong with this thinking?
- Tsunami
- · Replies 8 ·
Undergrad Is Light a Wave or a Particle in Spacetime?
- waznboyd
- · Replies 18 ·
Graduate Experiments verifying the speed limit in special relativity
- philipp2020
- · Replies 3 ·
Graduate Is the speed of light the same for non-inertial observers?
- actionintegral
- · Replies 10 ·
Graduate Massive objects traveling near the speed of light
- pete5383
- · Replies 2 ·
Graduate Can a single line represent all three spatial dimensions?
- Outlandish_Existence
- · Replies 6 ·
Graduate Do Wormholes Really Exist? Evidence and Explanation
- superweirdo
- · Replies 28 ·
Graduate Difficulties with interstellar travel
- vincentm
- · Replies 3 ·
Graduate Does Using a Sound Clock Affect Lorentz Transformations in Relativity?
- covers
- · Replies 8 ·
Graduate Can a frame of reference be wrong in determining motion in space-time?
- Born2Perform
- · Replies 99 ·
Graduate Two black holes falling head-on
- Jorrie
- · Replies 5 ·
Graduate Do clocks synchronized by Einstein's procedure all show the same time?
- bernhard.rothenstein
- · Replies 2 ·
Graduate Guessing the experiment performed in I' by observers from I
- bernhard.rothenstein
- · Replies 2 ·
Graduate Of sailing and relativity and titillating patterns
- DaveC426913
- · Replies 2 ·
Graduate Evaluating the Elapsed Time Difference Between Clocks in a Gravitational Field
- MeJennifer
- · Replies 1 ·
Graduate Painleve-Gullstrand coordinates
- pervect
- · Replies 3 ·
Graduate Metric Elements and Einstein Equations in a Variable-Dependent Formulation
- eljose
- · Replies 3 ·
Graduate Why does faster-than-light travel violate causality?
- David Laz
- · Replies 5 ·
Graduate Gravitational waves and negative energy.
- alias25
- · Replies 8 ·
Graduate Questions on Black Holes - Answers Wanted
- Markrids
- · Replies 11 ·
Graduate Spacetime in Newtonian kinematics
- jcsd
- · Replies 1 ·
Graduate Why does time slow down when traveling at high speeds?
- blahblahblah12345
- · Replies 10 ·
Graduate Are the Spaceships' Worldlines Straight in Relativity?
- MeJennifer
- · Replies 7 ·
Undergrad Why is Time Relative? - Understand the Concept
- onestarburns
- · Replies 43 ·
Graduate Is the Mass of a Cube of Matter Determined by Its Total Energy?
- quasar987
- · Replies 15 ·
High School Does the space shuttle need to reach 4000 mph to break a gravitational barrier?
- shelpdogg
- · Replies 8 ·
Graduate Why does curved spacetime resolve the equivalence of gravity and acceleration on a sphere?
- Leonardo Sidis
- · Replies 13 ·
Graduate Can Gravitons Escape Black Holes?
- eep
- · Replies 33 ·
Graduate Does Warping Spacetime Generate Mass?
- daniel_i_l
- · Replies 1 ·
Graduate Why does the sun bend spacetime and why do planets follow curved paths?
- blumfeld0
- · Replies 38 ·
Graduate What causes a marble slab to become a non-Euclidean continuum?
- pervect
- · Replies 12 ·
Graduate Can a privileged frame exist even if we can't detect it without acceleration?
- Born2Perform
- · Replies 16 ·
Graduate Do moving observers' wristwatches run slow relative to stationary ones?
- actionintegral
- · Replies 14 ·
Graduate Why does the moving clock in the 1971 plane experiment run slow?
- OS Richert
- · Replies 38 ·
Graduate What mathematics do I need to learn before studying relativity?
- THE 1
- · Replies 7 ·
Undergrad Is E=MC2 the Complete Equation for Energy-Mass Relation?
- ravisastry
- · Replies 34 ·
Graduate Can Charge Affect the Event Horizons of Black Holes?
- Quaoar
- · Replies 11 ·
Graduate Is Everything in the Universe Just Space-Time Geometry?
- himura_kenshin
- · Replies 12 ·
Graduate Interpreting GR: Is Spacetime Geometry Necessary?
- kvantti
- · Replies 3 ·
Graduate Conserving Lorentz Invariant Momentum in Particle Collisions
- MetaJoe
- · Replies 3 ·
Graduate Mass of a Singularity: Hawking's Explanation
- Born2Perform
- · Replies 5 ·
Undergrad What happens to gravity when matter converts to energy?
- Nahaz
- · Replies 9 ·
Graduate Why can photons travel at light speed if energy equals mass?
- RabidSmurf
- · Replies 17 ·
Graduate Hollow spherical blackhole thought experiment
- Instine
- · Replies 144 ·
Graduate Can SR fully explain magnetic force?
- Sheyr
- · Replies 7 ·
Graduate Same experiment performed in different inertial reference frames
- bernhard.rothenstein
- · Replies 5 ·
Graduate What is the Relative Speed of Photons in Opposite Directions?
- nighthelios
- · Replies 15 ·
Undergrad How can we say which planet is moving if twins age differently?
- Born2Perform
- · Replies 24 ·
Graduate Do the laws of relativity hold true for all forms of media?
- friendkey
- · Replies 17 ·
Graduate Why can't the Doppler effect explain relativity of simultaneity?
- physicsignoramus
- · Replies 9 ·
Graduate What is the Relationship Between Time and Gravity in the Early Universe?
- MeJennifer
- · Replies 16 ·
Graduate Why aren't electrons considered black holes ?
- Quaoar
- · Replies 18 ·
Graduate Stress-Energy tensor of a rotating disk
- pervect
- · Replies 2 ·
Graduate Are you sure that objects which moves enought fast are not black holes?
- Born2Perform
- · Replies 3 ·
Graduate Calculating Mass-Energy of a System Without Using Pseudotensors
- tim_lou
- · Replies 35 ·
Graduate Why does motion change the measured length of a rod?
- AltCtrlDel
- · Replies 15 ·
Undergrad Light Speed: Consequences of Relativistic Speeds
- blimkie
- · Replies 3 ·
Graduate Common misconceptions of cosmological horizons and superluminal expansion
- Robert100
- · Replies 3 ·
Graduate General relativity and time dilation
- Joe1
- · Replies 6 ·
Graduate Length and time for a given metric
- wandering.the.cosmos
- · Replies 1 ·
Graduate Is There Any Scientific Evidence Supporting the Idea of Viewing the Future?
- oneodubleo
- · Replies 1 ·
Graduate Determinant g = g_{00} det |g_{ij}|
- wandering.the.cosmos
- · Replies 5 ·
Graduate Does Antigravity Have a Basis in Justifiable Physics?
- argonurbawono
- · Replies 3 ·
Special Relativity Day: Albert Einstein's 1905 Theory
- neutrino
- · Replies 1 ·
Graduate Does background independence make general relativity non-local?
- RandallB
- · Replies 25 ·
Graduate What causes gravity?
- hover
- · Replies 13 ·
Graduate The Completeness of the Kruskal Extension: A Flaw in the Black Hole Solution?
- pervect
- · Replies 8 ·
Graduate Does the Velocity of Magnetic Field Effects Violate Maxwell's Equations?
- yogi
- · Replies 5 ·
Graduate Gravity / equivalence principle
- jbusc
- · Replies 10 ·
Undergrad Light clock and teaching of special relativity
- bernhard.rothenstein
- · Replies 12 ·
Undergrad How Long Would Earth Lose Sun's Gravity? - Helical
- Helical
- · Replies 3 ·