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 Did Einstein Have Multiple Definitions of Time?
- Salman2
- · Replies 28 ·
Graduate Maxwell's Equations in a Medium
- Anamitra
- · Replies 71 ·
Undergrad Why doesn't light get absorbed?
- Gravitonion
- · Replies 3 ·
Undergrad Do Photons Have Mass and Momentum?
- Garvi
- · Replies 170 ·
High School Why Does Gravity Pull Objects Together?
- gkangelexa
- · Replies 75 ·
Graduate A question regarding Special Relativity.
- JPBenowitz
- · Replies 3 ·
Graduate Can the Universe Travel Faster Than Light and Time Travel?
- arcbishop
- · Replies 2 ·
Graduate Can matter and anti matter manipulation be used for replication of
- arcbishop
- · Replies 1 ·
Graduate Can two stationary electrons generate a magnetic field?
- pfreemind
- · Replies 7 ·
Undergrad What does time mean at t=1/infinity?
- KyleStreet
- · Replies 8 ·
Graduate The crossing of two light waves, a point standing still ?
- digi99
- · Replies 16 ·
High School Is Time Travel Possible with Speed of Light?
- loffus
- · Replies 4 ·
Graduate Is There Research on Spacetime Elasticity and Its Relationship with Mass?
- dbullard
- · Replies 7 ·
Undergrad Does Traveling Affect Age? A Thought Experiment
- goodabouthood
- · Replies 5 ·
Graduate Can Neutrinos Travel Faster thyan Light?
- Anamitra
- · Replies 3 ·
Graduate Fourier transform in Minkowski space
- zlasner
- · Replies 6 ·
Graduate The Schwartzschild solution - why no Stress Tensor?
- TerryW
- · Replies 51 ·
Graduate Communicating Through an Einstein-Rosen Bridge Without Causality Violation
- superpaul3000
- · Replies 1 ·
Undergrad Potential energy contributes more to gravity
- bobsmith76
- · Replies 12 ·
Graduate Question on Time Dilation for Traveling Observers
- dako7
- · Replies 3 ·
Graduate Why Does Lorentz Transformation Not Yield the General Form of Four-Acceleration?
- snoopies622
- · Replies 4 ·
Undergrad Verifying Time Dilation, Length Contraction & Space-Time Curvature
- shounakbhatta
- · Replies 27 ·
Graduate Questions about photons. Their interaction with time and their life-cycle.
- um0123
- · Replies 8 ·
Graduate Speed of Light and Relativity of simultaneity
- darktangent1
- · Replies 10 ·
Graduate What Are the Limits of Acceleration and Energy in Relativity?
- Frogeyedpeas
- · Replies 4 ·
Graduate Michelson-Morley experiment, a pointless exercise when taking SR into account ?
- ft_c
- · Replies 11 ·
Graduate What is Waving in Light Waves?
- VegaMan
- · Replies 7 ·
Graduate Question on The Dichotomy Paradox
- LGram16
- · Replies 3 ·
Graduate I have a crude understanding of dark energy and the relativist universe.
- dacruick
- · Replies 16 ·
Undergrad Energy of photon never becomes zero
- NIKHEL RAINA
- · Replies 10 ·
Undergrad Can the change in energy change the mass?
- AudioFlux
- · Replies 13 ·
Graduate Time Dilation: Two Observers, Different Times
- nikeadidas
- · Replies 6 ·
Graduate My understanding of Space, Time and spacetime
- halix
- · Replies 61 ·
Graduate Newton's 3rd Law & Acceleration Paradox
- AdranGarrison
- · Replies 3 ·
Graduate Conservation of momentum question
- CuriousInPA
- · Replies 8 ·
Graduate How can a metric connection have torsion?
- Matterwave
- · Replies 11 ·
Graduate If energy/matter deforms spacetime in three dimensions
- cowmoo32
- · Replies 2 ·
Undergrad Does Earth's Rotation and Revolution Affect Time and Speed?
- pokk
- · Replies 5 ·
Graduate Q: A&B moving in opposite directions @ 0.6 c comparison with sound.
- Spacie
- · Replies 11 ·
Graduate Derivation of expansion scalar for FRW spacetime - weird observation
- PeterDonis
- · Replies 53 ·
Graduate Distance light travels in a relatively moving frame?
- Reikoku
- · Replies 4 ·
Graduate What is it that sets the speed limit of light?
- Lino
- · Replies 5 ·
Graduate Confusion over Einstein summation convention and metric tensors.
- Lyalpha
- · Replies 24 ·
Graduate Center of mass of a system of two photons
- kthouz
- · Replies 2 ·
Graduate What do I do with these christoffel symbols?
- Sparkyboy
- · Replies 1 ·
Undergrad Combining SR and the Broglie Wavelength equations: Are they cumulative?
- That fast guy
- · Replies 3 ·
Graduate Can motion be detected without external reference in a moving container?
- Bill Minerick
- · Replies 52 ·
Undergrad Why is light speed constant in all reference frames?
- catalyst0435
- · Replies 39 ·
Graduate How does curved space create gravity?
- paulicator
- · Replies 7 ·
Graduate How did Albert Einstein figure this out?
- PatrickPowers
- · Replies 1 ·
Undergrad Help understanding a SR equation
- Reikoku
- · Replies 2 ·
Graduate Issues entering a spacetime in GRTensor II
- LAHLH
- · Replies 5 ·
Graduate Does Time Flow for a Photon in the Context of Time-Space?
- Kinny
- · Replies 1 ·
Undergrad Beginner question about special relativity
- neginf
- · Replies 3 ·
Graduate A mind experiment about speed and time
- dr.eams
- · Replies 8 ·
Graduate Mass is Energy Moving Faster then Light?
- csmcmillion
- · Replies 2 ·
Graduate In the back of the popular Relativity book
- snoopies622
- · Replies 8 ·
Graduate Time dilation thought experiment clarification
- localrob
- · Replies 9 ·
Graduate How Does Newton's F=ma Relate to the Geodesic Equation in General Relativity?
- nickyrtr
- · Replies 10 ·
Graduate Radius of Ring Singularity in Kerr Black Hole
- edgepflow
- · Replies 17 ·
Graduate Global observations from Rindler frame
- zonde
- · Replies 2 ·
Graduate Worldline congruence and general covariance
- TrickyDicky
- · Replies 145 ·
Graduate Oppenheimer Snyder Collapse - finite time?
- Passionflower
- · Replies 11 ·
Graduate Can you measure the proper length of a rope when dangling it into a black hole?
- Slinkey
- · Replies 21 ·
Undergrad Black hole matter accumulation
- keepit
- · Replies 284 ·
Graduate Divergence of Energy-momentum Tensor
- ClaraOxford
- · Replies 4 ·
Graduate How Does Time Dilation Affect Subjective Travel Times in Space?
- DaveC426913
- · Replies 18 ·
Graduate Understanding Spinning Black Holes: A Confused Perspective
- Riogho
- · Replies 6 ·
Graduate Vacuum and non-vacuum regions, dust and fluids
- Passionflower
- · Replies 1 ·
Graduate Combining General Relativity and Geodesy: A Master's Project Topic Suggestion
- temitopeseun
- · Replies 1 ·
Undergrad Earth's orbit and relative speed/time
- jezzabeanz
- · Replies 2 ·
Graduate A thought experiment with theory of relativity.
- Supreethsj
- · Replies 3 ·
Graduate Momentum at the speed of light
- blueberrynerd
- · Replies 1 ·
Undergrad Need quick answer on spatial dimensions
- CylonHybrid
- · Replies 23 ·
Graduate How do I use Einstein's field equations to solve for particle locations?
- Petyab
- · Replies 1 ·
Graduate Red/blue shift in classic train/platfom thought experiment?
- melchloboo
- · Replies 11 ·
Graduate Is Magnetism Affecting Our Clocks in Space?
- yogi
- · Replies 7 ·
Undergrad The relationship between light, energy and relativity
- That fast guy
- · Replies 9 ·
Graduate How Does Mass and Energy Affect Space-Time in Relativity?
- human83
- · Replies 5 ·
Graduate Special Relativity and the existence paradox
- bohm2
- · Replies 4 ·
Graduate How does gravitational acceleration change near an event horizon?
- Slinkey
- · Replies 18 ·
Time: A Scientific Exploration
- elosin
- · Replies 95 ·
Graduate Absolute Space and Moving Co-ordinates.
- n4n0b0y
- · Replies 1 ·
High School Comparative speed of moving vs unmoving
- gonegahgah
- · Replies 27 ·
Graduate Spherical Mass Shell - What Actually Happens?
- Q-reeus
- · Replies 15 ·
Graduate Simultaneity is directional while time dilation is not?
- universal_101
- · Replies 14 ·
Graduate Spacetime expanding within galaxies?
- cbd1
- · Replies 13 ·
High School Whether the speed of alternative/direct current is faster than light?
- Mr.GaGa
- · Replies 45 ·
Graduate What is the issue with photon rest mass?
- CoolBeans
- · Replies 17 ·
Graduate Why does time depend on light?
- Chinnu
- · Replies 12 ·
Graduate The Meaning of Natural Units: $c=1$
- Casco
- · Replies 9 ·
Undergrad Someone moving near c to an observer?
- DuckSoup
- · Replies 5 ·
Graduate Schwarzschild Metric - Rindler coordinates
- aCHCa
- · Replies 2 ·
Graduate Time dilation in a non-inertial reference frame
- blueberrynerd
- · Replies 4 ·
Graduate Is there a smallest unit of gravity?
- Sergent
- · Replies 22 ·
Graduate Special Relativity breaks down in matter?
- Mr.GaGa
- · Replies 2 ·
Graduate Basic derivation of Lorentz Transformation
- ben.g95
- · Replies 16 ·
Graduate Redshift of Sound in a Gravitational Field
- arhanbezbora
- · Replies 4 ·
Graduate Transformation of the Line-Element
- Anamitra
- · Replies 235 ·
Graduate Diffeomorphisms in Flat-Space: Are All Metric Preserving?
- jfy4
- · Replies 4 ·