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 Thin shell velocity is greater than speed of light?
- mersecske
- · Replies 4 ·
Graduate Relativistic Effects on the E-field
- mysearch
- · Replies 5 ·
Graduate Is the Lorentz force invariant under Lorentz transformations?
- mysearch
- · Replies 10 ·
Susskind Lectures on General Relativity
- drlang
- · Replies 10 ·
Graduate Mass increase at relativistic speeds
- gsingh2011
- · Replies 25 ·
Graduate How can gravitational lensing produce a maximal time path for light?
- azaharak
- · Replies 12 ·
Graduate List of people who understand relativity
- least_action
- · Replies 7 ·
Graduate Calculating the binding energy of a black hole
- avrndef
- · Replies 12 ·
Graduate Do train gaps appear smaller in motion?
- Nabeshin
- · Replies 53 ·
High School Does the Earth move around the Sun?
- diegocas
- · Replies 53 ·
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 Computing frequency shift from geodesic congruences and frame fields
- Chris Hillman
- · Replies 6 ·
Graduate Why can't a photon moving at light speed be considered stationary?
- wittgenstein
- · Replies 2 ·
Graduate Are vector and one-form definitions circular in Schutz's relativity treatment?
- 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 Does rotating an infinite rigid stick exceed light speed at the end?
- 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 in Brian Greene's spaceship example
- 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 How fast is Earth moving through space and what is our 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 What is the speed of light and how is it measured?
- BDfarsi
- · Replies 4 ·
Graduate Light sphere luminosity at different frames
- 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 Are null hyperplanes Cauchy surfaces in Minkowski spacetime?
- paweld
- · Replies 1 ·
Graduate Is the Painleve-Gullstrand chart consistent with the Schwarzschild solution?
- Passionflower
- · Replies 15 ·
Graduate Why does the spacetime interval give zero for causally disconnected events?
- 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 falling into a black hole be crushed into 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 What was the conflict between Newton and Einstein?
- abrowaqas
- · Replies 10 ·
Undergrad Gravitation and Antimatter: Does it Matter?
- The legend
- · Replies 5 ·
Graduate Negative Gravity (not dark matter)
- Duzza
- · Replies 2 ·
Graduate Lorentz transforming fields before or after superposition
- univox360
- · Replies 5 ·
Graduate Gravitational time dilation on a non-spherical object
- Dr Chaos
- · Replies 34 ·
Graduate Misner Wheeler Thorne gravitation p.49 parameterization: λ or τ
- Living_Dog
- · Replies 6 ·
Graduate Events can be simultaneous in one time frame but not so in others
- stevmg
- · Replies 47 ·
Graduate Deriving the relativistic velocity subtraction formula
- 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 Does electron charge or body temperature change at relativistic speeds?
- abrowaqas
- · Replies 1 ·
Undergrad Speed and Spacetime Distortion
- MikeCB
- · Replies 2 ·
Graduate Why can photons travel at light speed if they're not massless?
- Kurushimi
- · Replies 4 ·
Graduate Open and closed in the geometrical sense vs the thermodynamic sense
- WraithM
- · Replies 6 ·
Graduate Why does relativity of simultaneity seem to allow detecting absolute velocity?
- calebhoilday
- · Replies 6 ·
High School What does the paper mean by saying gravity doesn't exist?
- 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 Train and mirror: why light takes the same time in all frames
- werunom
- · Replies 6 ·
Graduate Can a local inertial frame be Poincaré invariant in general relativity?
- 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 Can light speed be a limit of dimensional resolution?
- 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 Why does light always travel at c relative to any observer?
- 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 Why is the Maxwell tensor antisymmetric in Ludvigsen's formulation?
- 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 Photon trajectories inside the event horizon for Schwarzschild and Kerr black holes
- JeffOCA
- · Replies 3 ·