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.
- Curious Kev
- · Replies 43 ·
- Jokar
- · Replies 5 ·
- jt128
- · Replies 90 ·
Undergrad
Lorentz transformation on mode functions
- Haorong Wu
- · Replies 7 ·
- grzz
- · Replies 22 ·
- p78653
- · Replies 0 ·
- Tony Yuan
- · Replies 6 ·
Undergrad
What about the Big Ben Paradox?
- patdolan
- · Replies 40 ·
Undergrad
Using 4-derivative
- deuteron
- · Replies 2 ·
- L Drago
- · Replies 29 ·
High School
Imaginary distance is nonsense
- AndreyN
- · Replies 21 ·
High School
c^2 in Einstein‘s theory of relativity
- Lightisslow
- · Replies 10 ·
- Jokar
- · Replies 20 ·
- johnfrancismurray
- · Replies 51 ·
Undergrad
The Lorentz factor gamma and proper time
- Trysse
- · Replies 31 ·
- lloydziegler
- · Replies 9 ·
- TCO
- · Replies 10 ·
Undergrad
A thought experiment on simultaneity
- member 743765
- · Replies 6 ·
Undergrad
Speed of Light & Bullet
- FRANKENSTEIN54
- · Replies 72 ·
- Junhyoung Park
- · Replies 4 ·
- bbbl67
- · Replies 26 ·
- Timothy S.
- · Replies 4 ·
- DBailen
- · Replies 13 ·
- ShadowX5452
- · Replies 17 ·
High School
But how does something start moving?
- Line_112
- · Replies 2 ·
- Timbo65
- · Replies 6 ·
Undergrad
Speed of light one more time
- Rick16
- · Replies 5 ·
- shinobi20
- · Replies 8 ·
- ineed2know
- · Replies 18 ·
- robphy
- · Replies 3 ·
- deuteron
- · Replies 6 ·
High School
Let me ask a thing about the Speed of Light
- Azar525
- · Replies 6 ·
Undergrad
Co- and Contravariance
- deuteron
- · Replies 5 ·
- tsslieberman
- · Replies 57 ·
- .Scott
- · Replies 12 ·
Undergrad
Relativity and a Mirror
- saddlestone-man
- · Replies 11 ·
- Volterra
- · Replies 8 ·
- euquila
- · Replies 25 ·
- cianfa72
- · Replies 1 ·
- binbagsss
- · Replies 25 ·
- Onyx
- · Replies 6 ·
- Dennis Plews
- · Replies 16 ·
- TheStick
- · Replies 18 ·
- larpal
- · Replies 15 ·
Undergrad
Asteroid hits static black hole
- timmdeeg
- · Replies 31 ·
- TimWilliams87
- · Replies 9 ·
- Max364
- · Replies 5 ·
- L Drago
- · Replies 13 ·
Undergrad
How Can Tensors Be Evaluated to Scalars?
- LarryS
- · Replies 4 ·
High School
Pole-barn paradox, one question
- FIL
- · Replies 17 ·
High School
Is Time Travel Possible Near Black Holes?
- L Drago
- · Replies 22 ·
- L Drago
- · Replies 11 ·
- L Drago
- · Replies 17 ·
- pinball1970
- · Replies 51 ·
- DaveC426913
- · Replies 18 ·
High School
Speed of light seen by a moving observer
- Speady
- · Replies 24 ·
- binbagsss
- · Replies 3 ·
- javisot20
- · Replies 7 ·
Undergrad
Proof of Lorentz transformation
- murshiddreamengineer
- · Replies 3 ·
- Muzaz
- · Replies 2 ·
- FranzS
- · Replies 10 ·
Undergrad
Black hole and singularity
- Ranku
- · Replies 18 ·
- Onyx
- · Replies 5 ·
- logicalmorality
- · Replies 3 ·
- redtree
- · Replies 4 ·
- thetexan
- · Replies 120 ·
- Hunterc2429
- · Replies 5 ·
High School
Very simple exercises in General Relativity
- DaTario
- · Replies 57 ·
- DaTario
- · Replies 15 ·
- Tldrknhndsm
- · Replies 12 ·
Undergrad
Do black holes have magnetic fields?
- Feynstein100
- · Replies 44 ·
- cianfa72
- · Replies 79 ·
- JimWhoKnew
- · Replies 1 ·
- aliinuur
- · Replies 9 ·
- Kostik
- · Replies 0 ·
- Kostik
- · Replies 3 ·
- noxurxo
- · Replies 17 ·
- cianfa72
- · Replies 24 ·
Undergrad
Lorentz invariance of the 4-momentum
- redtree
- · Replies 18 ·
- sbaker8688
- · Replies 23 ·
- arivero
- · Replies 4 ·
Undergrad
The uniqueness of D=4
- arivero
- · Replies 2 ·
Undergrad
Why do objects follow a geodesic?
- Zayan
- · Replies 7 ·
- lys04
- · Replies 1 ·
High School
General relativity and frame of reference
- south
- · Replies 12 ·
- chartery
- · Replies 20 ·
- Ascendant0
- · Replies 8 ·
- tx_kurt
- · Replies 10 ·
High School
Nalini Joshi's Time Travel Ideas
- Tomwh98
- · Replies 2 ·
Undergrad
Constants of motion symmetric spacetimes
- cianfa72
- · Replies 9 ·
Undergrad
Speed of information-carrying radiation
- Speady
- · Replies 9 ·
- Antarres
- · Replies 9 ·
- Michael Ray Mooney
- · Replies 4 ·
Undergrad
Quaternions and Special Relativity
- grzz
- · Replies 20 ·
- Trollfaz
- · Replies 17 ·
- bob012345
- · Replies 21 ·
- Clvrhammer
- · Replies 4 ·
Undergrad
Congruence of curves in spacetime
- cianfa72
- · Replies 23 ·
Undergrad
Distance between two light pulses
- member 743765
- · Replies 4 ·
Graduate
Timelike curves on event horizon
- Antarres
- · Replies 7 ·