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 Speed of object emerging from wormhole
- nickyrtr
- · Replies 12 ·
Graduate Does light must be wave-like in Einstein mirror clock thought experiment?
- Izhaki
- · Replies 7 ·
Graduate BRS: Using geodesic congruences and frame fields to compute optical experience
- Chris Hillman
- · Replies 6 ·
Graduate QM & Relativity: Can Photons Moving at Speed of Light Be Stationary?
- wittgenstein
- · Replies 2 ·
Graduate Defining Vector: Beyond Schutz's Treatment in G. Relativity
- schwarzschild
- · Replies 1 ·
High School Time Dilation Basics: What It Means for Space Travel
- dr.fluis
- · Replies 2 ·
Graduate Is Time Dilation Caused by Motion or the Fabric of Time Itself?
- Northern
- · Replies 30 ·
Undergrad Can Both Observers Experience Time Dilation in the Relativity of Motion?
- tomatoking
- · Replies 7 ·
Graduate Does Time Dilation Explain the Lack of Effects in Quasar Light Curves?
- Passionflower
- · Replies 1 ·
Graduate Acceleration/Deceleration in SR
- stevmg
- · Replies 58 ·
Graduate Is there such thing as relativistic angular velocity?
- zeromodz
- · Replies 4 ·
Graduate Electromagnetic stress energy tensor
- relativityfan
- · Replies 3 ·
Graduate Ideas about black holes, light, and time.
- Capt_Jet23
- · Replies 10 ·
Graduate One dimensional collision of 2 unequal masses
- randombill
- · Replies 67 ·
Graduate If photons don't have mass, why do their paths bend in a gravitational field?
- Naty1
- · Replies 16 ·
Graduate Understanding General Relativity: What Does it Take?
- murad60
- · Replies 1 ·
Graduate Do Electrons Emit Lower Frequency Waves When Moving Very Fast?
- Infrasound
- · Replies 2 ·
Undergrad The General Relativity Elevator Thing
- Unlockitall
- · Replies 2 ·
Graduate Amazing Experiment: Faster Than Light?
- maritz
- · Replies 26 ·
Graduate Can an observer know he's in a black hole?
- nickyrtr
- · Replies 22 ·
Graduate What is Timelike? Detailed Explanation
- physlover1
- · Replies 3 ·
Graduate Time Dilation: Solving Brian Greene's Example w/ Math
- gsingh2011
- · Replies 14 ·
Graduate Interesting General Relativity Scenario
- OverLOAD
- · Replies 8 ·
Graduate Relativity says that there is no absolute simultaneity. Quantum
- cometraza
- · Replies 3 ·
Graduate Does electromagnetic radiation from pulsar stars
- Chaos' lil bro Order
- · Replies 2 ·
Graduate Earth's Velocity in Space: Measuring Time Dilation
- Myslius
- · Replies 16 ·
Graduate Hyperphysics: Hafel-Keating experiment
- Rasalhague
- · Replies 1 ·
Graduate Does the speed of light slow down near a black hole?
- 13habelbrea
- · Replies 19 ·
Graduate Is Einstein-Cartan Theory a Mainstream Extension of General Relativity?
- TrickyDicky
- · Replies 23 ·
Graduate What Drives Time Forward in Our Universe?
- Dauden
- · Replies 14 ·
High School Speed of Light: Expert Answers to Your Questions
- BDfarsi
- · Replies 4 ·
Graduate Light Sphere Paradox: A Conundrum with No Solution?
- Austin0
- · Replies 66 ·
Graduate Is the summation notation for three equivalent expressions?
- schwarzschild
- · Replies 2 ·
Graduate Causality violation from FTL signaling within the same reference frame only?
- blincoln
- · Replies 6 ·
Graduate Null Hyperplanes & Cauchy Surfaces in Spacetimes
- paweld
- · Replies 1 ·
Graduate Is the Painleve-Gullstrand chart consistent with the Schwarzschild solution?
- Passionflower
- · Replies 15 ·
Graduate Understanding Minkowski Space-time: An Explanation of Time as a Dimension
- calebhoilday
- · Replies 32 ·
Graduate The significance of special relativity
- Kholofelo
- · Replies 12 ·
Graduate Minimal mass from cosmological constant?
- JollyJoker
- · Replies 1 ·
Graduate Solving the Twin Paradox with Lorentz Transformation
- AdVen
- · Replies 186 ·
Graduate Computing Spatial Distance in General Relativity
- eok20
- · Replies 1 ·
Graduate I'm having trouble understanding the following sentence from Schutz's
- schwarzschild
- · Replies 1 ·
Undergrad Ball dropping and frame of reference
- werunom
- · Replies 4 ·
Graduate Why is the speed of light invariant despite relative motion?
- stevmg
- · Replies 41 ·
Graduate Conservation of the volume form
- relativityfan
- · Replies 5 ·
Undergrad Can Matter Fall Into a Black Hole & Become Energy?
- Frannas
- · Replies 16 ·
Graduate Time dilation and length contraction for rotating black holes
- relativityfan
- · Replies 17 ·
Graduate Definition of a symmetric connection
- Angelos K
- · Replies 3 ·
Undergrad Newton vs Einstein: Conflict & Division of Physics Theories
- abrowaqas
- · Replies 10 ·
Undergrad Gravitation and Antimatter: Does it Matter?
- The legend
- · Replies 5 ·
Graduate Negative Gravity (not dark matter)
- Duzza
- · Replies 2 ·
Graduate Order of Operations, Lorentz Transformations & Superposition
- univox360
- · Replies 5 ·
Graduate Gravitational time dilation on a non-spherical object
- Dr Chaos
- · Replies 34 ·
Graduate GRAVITATION by MTW: p.49, lambda or tau?
- Living_Dog
- · Replies 6 ·
Graduate Events can be simultaneous in one time frame but not so in others
- stevmg
- · Replies 47 ·
Graduate Attempting to obtain the velocity subtraction formula (help required)
- calebhoilday
- · Replies 15 ·
Graduate How is velocity defined in the context of relativity?
- RK1992
- · Replies 8 ·
Graduate Gravity and Time Dilation: Are They One and the Same?
- Moore1879
- · Replies 5 ·
Graduate Relative Charge & Temp: What Happens to Electrons & Bodies Near Speed of Light?
- abrowaqas
- · Replies 1 ·
Undergrad Speed and Spacetime Distortion
- MikeCB
- · Replies 2 ·
Graduate Are Photons Massless? | Inquiry & Confusion
- Kurushimi
- · Replies 4 ·
Graduate Open and closed in the geometrical sense vs the thermodynamic sense
- WraithM
- · Replies 6 ·
Graduate Relativity of simultaneity: the source of the headache
- calebhoilday
- · Replies 6 ·
High School Explaining Gravity for Non-Physicists
- FawkesCa
- · Replies 5 ·
Undergrad Upside Down Pendulum: Does Gravity Affect Its Tick Speed?
- gonegahgah
- · Replies 4 ·
Graduate Collision practice problems/tutorial
- zwoodrow
- · Replies 1 ·
Graduate Theory of Simultaneity & Wikipedia article
- werunom
- · Replies 6 ·
Graduate GR: Local Inertial Frame & Poincare Invariance
- paweld
- · Replies 1 ·
Graduate Boosting Your Fuel Efficiency When You Reach C: The Impact of Mass Increase
- DARKSYDE
- · Replies 2 ·
Graduate Does the 4th dimension mean our universe is definite?
- krobben11
- · Replies 9 ·
Graduate Can a Rotating Sphere at Relativistic Speeds Create a 'Black Spot'?
- natski
- · Replies 40 ·
Graduate Is Sadi Carnot's Work on Energy Density Still Relevant Today?
- stevmg
- · Replies 5 ·
Graduate Basic questions about general relativity concepts
- jeebs
- · Replies 37 ·
Graduate Is Time the Fourth Dimension in Euclidean Space?
- TheAlkemist
- · Replies 12 ·
Undergrad Twin paradox - which twin is older?
- maya :D
- · Replies 12 ·
Graduate Twin Paradox in a Flat Toroidal Universe: Time Dilation and Inertial Frames
- lugita15
- · Replies 4 ·
Graduate Not completely getting Lorentz transformations
- calebhoilday
- · Replies 21 ·
Graduate Center of the Universe: Exploring the Possibilities
- Alidow
- · Replies 7 ·
Undergrad Light interaction/interference
- Retracer-ST12
- · Replies 5 ·
Graduate Anyone thought about this before?
- Alex_Sanders
- · Replies 5 ·
Graduate What Does an Observer See When Falling Into a Black Hole?
- Calimero
- · Replies 11 ·
Graduate Understanding BH Singularities - Temporal vs Spatial
- JeffOCA
- · Replies 3 ·
Graduate Confused About Traveling at the Speed of Light?
- binbots
- · Replies 3 ·
Graduate Is the gravitational time dilatation a real effect?
- Kamil Szot
- · Replies 96 ·
Graduate Orbital velocities in the Schwartzschild geometry
- espen180
- · Replies 536 ·
Graduate Topology on manifold and metric
- paweld
- · Replies 4 ·
Graduate Understanding the Antisymmetry of the Maxwell Tensor
- M. Kohlhaas
- · Replies 3 ·
Graduate Schwarzschild Radius, Constantcy of Light speed, and Time Dialation
- OverLOAD
- · Replies 4 ·
Graduate Relativity problem thats been bugging me
- mm06sk
- · Replies 6 ·
Graduate Schwarzschild & Kerr black holes geometries
- JeffOCA
- · Replies 3 ·
High School What is Gravity? How Does It Work?
- QAT
- · Replies 8 ·
Graduate Energy Needed to Fold Spacetime?
- TromboneNerd
- · Replies 3 ·
Graduate Does the Zeeman Effect Alter Clock Rates in Different Magnetic Fields?
- cragar
- · Replies 12 ·
Graduate Question about energy density in On the Electrodynamics of Moving Bodies
- e2m2a
- · Replies 1 ·
Graduate Gravity: Fictitious Force & Inertial Frame of Reference?
- Red_CCF
- · Replies 6 ·
Graduate Phase, Geodesics, and Space-Time Curvature
- jfy4
- · Replies 2 ·
Graduate Are Time and Movement the Same Dimension?
- tanzanos
- · Replies 1 ·
Undergrad Galilean transformation from velocity composition?
- jason12345
- · Replies 2 ·
Graduate Equivalence of mass, energy and gravity
- xchaos01
- · Replies 9 ·
Undergrad Speed of light in refractive material
- benmww
- · Replies 2 ·