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 Rotating rigid sphere stress-energy tensor
- aatw
- · Replies 4 ·
Graduate Does light inherit the source's horizontal velocity in a moving light clock?
- Canaan_C
- · Replies 31 ·
Finding a video explanation of time dilation
- Forestman
- · Replies 1 ·
Graduate Learning mode decomposition and retarded Green's functions
- zamoura
- · Replies 1 ·
Graduate Curvature using exterior differential forms
- emma83
- · Replies 1 ·
Graduate Relativistic version of 2nd law of thermodynamics
- Dmitry67
- · Replies 2 ·
Graduate How do we know that the stress-energy is a tensor?
- jdstokes
- · Replies 20 ·
Graduate Can a civilization gather information from inside the event horizon?
- spikenigma
- · Replies 7 ·
Graduate Modificaition in pole and barn paradox
- the-genius
- · Replies 12 ·
Graduate Most precise experimental tests of time dilation
- lalbatros
- · Replies 12 ·
Graduate Does time essentially stop if you could travel a C?
- syano
- · Replies 5 ·
Undergrad How do you tell you are not in inertial frame of reference
- the-genius
- · Replies 26 ·
Undergrad Question reguarding gravitational pull
- Chewy0087
- · Replies 5 ·
Graduate How can you create a geodesic path using the metric and initial velocity?
- Jack3145
- · Replies 4 ·
Graduate Lorentz Transforms + Relativity of Simultaneity
- Dakar
- · Replies 1 ·
Graduate Does space warp reduce the space volume?
- Gerinski
- · Replies 9 ·
High School What Are the Standard Wavelengths of Light and Their Variations?
- Questioner...
- · Replies 8 ·
Graduate Alternate Representations of Lorentz Generators Mμν
- sshaep
- · Replies 4 ·
Undergrad Can one photon catch up to another photon?
- fluidistic
- · Replies 4 ·
Graduate Is E=mc^2 a physical law or just a definition?
- quZz
- · Replies 20 ·
Graduate Constantly accelerating object and its proper time
- lhy56839
- · Replies 9 ·
Graduate Proper time of an accelerating particle
- alienslag
- · Replies 3 ·
Graduate Endless Acceleration: Is Hyperbolic Reduction the Answer?
- neopolitan
- · Replies 9 ·
Graduate How exactly does energy become mass?
- Quantum_Grid
- · Replies 105 ·
Graduate Special Relativity: Ultimate Speed Limit
- kidsmoker
- · Replies 1 ·
Graduate Is length contraction physically real in special relativity?
- Forestman
- · Replies 11 ·
Graduate The source of gravitational red shift
- Zman
- · Replies 3 ·
Graduate Why does gravity escape the black hole event horizon?
- Naty1
- · Replies 2 ·
Graduate Do moving particles generate more gravity through relativistic mass?
- Dmitry67
- · Replies 1 ·
Graduate Using Einstein field equation
- kashiark
- · Replies 1 ·
Undergrad Why is c squared in Einstein's equations?
- sonofahb
- · Replies 7 ·
Graduate The doppler effect on light (red and blue shifts)
- kashiark
- · Replies 4 ·
Graduate A baffling quote from Einstein, badly requiring explanation
- echoing song
- · Replies 59 ·
Graduate Hypothetically If you were in a spaceship going 0.99999999999 c and you tried
- battlestar08
- · Replies 11 ·
Graduate Does time require matter, and should mass be defined from distance?
- Timmaay322
- · Replies 4 ·
Graduate Tell me what I'm doing wrong (velocity addition in 3+1 dimensions)
- Fredrik
- · Replies 11 ·
Graduate Yau's result for the Ricci curvature on Kahler manifold
- schieghoven
- · Replies 5 ·
Graduate The speed of light and gravity
- Forestman
- · Replies 9 ·
Graduate Can Relativistic Speeds Affect the Calculation of a System's Center of Mass?
- LarryS
- · Replies 1 ·
Graduate Mass and the Speed of Light: Equations and Measurements
- ThoughtProces
- · Replies 5 ·
Graduate What is the relationship between momentum and mass in the context of light?
- SimonB
- · Replies 3 ·
Graduate Disk Rotating Near the Speed of Light
- Nitefang
- · Replies 22 ·
Graduate Gravity & Time: Why Does a Powerful Gravitational Field Affect Time?
- Forestman
- · Replies 2 ·
Graduate Why do we have to make assumptions in science?
- Forestman
- · Replies 6 ·
Graduate Why does an object fall from rest in a gravitational field?
- tickle_monste
- · Replies 4 ·
Graduate Is Energy Transmitted Faster than Light through Electro-Weak Fields?
- tickle_monste
- · Replies 4 ·
Graduate Best way to explain relativity of simultaneity
- Histspec
- · Replies 5 ·
Graduate How Does Gravity Affect Time in Relativity?
- mintparasol
- · Replies 21 ·
Graduate Does spacetime exist independently of matter and energy?
- Charlie G
- · Replies 23 ·
Graduate Can information be transmitted faster than c in inflationary cosmology?
- ensabah6
- · Replies 2 ·
Graduate Riemann geometry and hydrostatic
- delplace
- · Replies 2 ·
Graduate How Does Gravity Affect Particle Kinetic Energy in a Vacuum?
- cam875
- · Replies 12 ·
Graduate Understanding Time Dilation in Einstein's Theory of Relativity
- cos
- · Replies 1 ·
Graduate Are Christoffel Symbols Considered Tensors?
- Karl G.
- · Replies 5 ·
Graduate What is the truth about photons and their mass?
- ImAnEngineer
- · Replies 53 ·
Graduate What happens to time and perception at light speed?
- T.O.E Dream
- · Replies 34 ·
Graduate Gravity at very large distance
- Dreads
- · Replies 3 ·
Graduate Why velocity addition formula fails with velocity 4-vector transformation
- ygolo
- · Replies 2 ·
Graduate In which areas of physics is relativistic mass used?
- jtbell
- · Replies 16 ·
Graduate Is Light's Speed Perception Shaped by Relativity?
- Sapientiam
- · Replies 4 ·
Graduate Absolute Movement: Is Point Source Stationary?
- Dreads
- · Replies 28 ·
High School Why didn’t Einstein win a noble prize for relativity?
- cragar
- · Replies 20 ·
Graduate Is Faster than Light Travel Possible for Objects with Less Mass than a Proton?
- Ninja Tang
- · Replies 6 ·
Graduate Why does the 2GM/c² factor appear in gravitational time dilation?
- Bjarne
- · Replies 23 ·
Undergrad Speed of light constant throughout universe?
- M31
- · Replies 20 ·
High School Were some of Einstein's thought experiments carried out later?
- lalbatros
- · Replies 2 ·
High School Why does an orbiting body slow down in curved space-time?
- shehri
- · Replies 20 ·
Graduate Does an object in absolute reference state have zero mass?
- Cale C.
- · Replies 9 ·
Graduate How is the mass of particles in the Large Hadron Collider determined?
- cos
- · Replies 6 ·
Graduate Can Time Create the Illusion of Gravity in a 4-Dimensional Universe?
- Boeley
- · Replies 7 ·
Graduate How Does GPS Account for Asymmetric Geometry on Earth's Surface?
- Loren Booda
- · Replies 3 ·
Graduate Center of Krunskl Szekeres coordinate
- randa177
- · Replies 3 ·
Graduate Does Einstein really explain everything about gravity? Is there more?
- T.O.E Dream
- · Replies 10 ·
Graduate Does Einstein's theory explain why mass warps spacetime?
- T.O.E Dream
- · Replies 3 ·
Graduate My Sad Paradox: Watching 30 Years in 3?
- (T.O.E)
- · Replies 1 ·
Graduate Can objects moving faster than light exist in special relativity?
- Lexus Dominus
- · Replies 25 ·
High School How Did Physicists Determine the Speed of Light?
- T.O.E Dream
- · Replies 1 ·
Graduate Are the formulas that account for aberraion and doppler shift compatible?
- bernhard.rothenstein
- · Replies 3 ·
Graduate Definitions (continued from the cosmology forum)
- Fredrik
- · Replies 130 ·
Graduate How come equations don't account for
- schlynn
- · Replies 6 ·
Graduate Are gravitons consistent with black holes emitting them?
- Firesmith
- · Replies 1 ·
Graduate So, thank you very much again.Why not length contraction?
- Shawn Garsed
- · Replies 24 ·
Graduate Length Contraction in Particle Accelerators
- Mentallic
- · Replies 6 ·
Graduate Could Negative Mass Break the Cosmic Speed Limit?
- T.O.E Dream
- · Replies 13 ·
Graduate Possibility of Time Travel at Light Speed
- quantum brain
- · Replies 12 ·
Graduate How Does Light Behave on a Rotating Disc in Different Reference Frames?
- jkg0
- · Replies 4 ·
Graduate Why can't quantum mechanics and general relativity be combined mathematically?
- T.O.E Dream
- · Replies 4 ·
Graduate Should spacetime transformations make a group?
- lalbatros
- · Replies 21 ·
High School Why light can achieve such fast speed?
- ONON
- · Replies 20 ·
Graduate Entropy and relativity of simultaneity in Greene's the fabric of the cosmos
- musik284
- · Replies 13 ·
High School What pushes on you to make gravity attractive?
- samblohm
- · Replies 4 ·
Graduate Palatini Formalism: History, Motivation, Advantages
- noomz
- · Replies 3 ·
Graduate Combining SR and GR time dilation
- taylog1
- · Replies 2 ·
Graduate Is relativity remain unchanged?
- sanjibghosh
- · Replies 44 ·
Graduate Is Movement Through Space-Time Really Possible?
- menergyam
- · Replies 16 ·
Undergrad Webliography: What is the experimental basis of Special Relativity?
- lalbatros
- · Replies 2 ·
Graduate Magnetic Fields and Lorentz force flaw
- xfshi2000
- · Replies 3 ·
Graduate Lorentz transformation without the speed of light postulate
- lalbatros
- · Replies 6 ·
Graduate Minkowski Metric: Does it Violate Metric Space Axioms?
- Bobhawke
- · Replies 6 ·
Graduate Does the existance of relativity prove that gravity's wrong?
- GordonDengyo
- · Replies 33 ·