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 Falling Feet First into a Black Hole
- Allday
- · Replies 4 ·
Undergrad What Are Non-Astrophysical Examples of Experimental Evidence for E=MC^2?
- Brewer
- · Replies 5 ·
Graduate Resources for learning general relativity
- Spin_Network
- · Replies 2 ·
Graduate Picture a small mass orbiting around a large mass
- Jonny_trigonometry
- · Replies 22 ·
Graduate High speeds - becoming a black hole
- dhi
- · Replies 34 ·
Graduate Could Light Speed Fluctuate Due to Transfer of Inertial Reference Frames?
- cd27
- · Replies 6 ·
Graduate Relative Nature of Time: Is it True?
- eon_rider
- · Replies 4 ·
Graduate When the station comes to the train?
- Macro
- · Replies 9 ·
Graduate Does light take the same path in a denser medium within a gravity well?
- wolram
- · Replies 3 ·
Graduate Advanced books/papers on derivation of Newtonian mechanics from GR
- Juan R.
- · Replies 92 ·
Undergrad Is c the fastest known velocity?
- 16d @ 4"
- · Replies 22 ·
Graduate Where Can I Find Resources on Einstein's Field Equations and Their Context?
- professor
- · Replies 23 ·
Graduate How Does Mass Increase When Accelerating to the Speed of Light?
- Lakshminarayanan.V
- · Replies 21 ·
Graduate How Does Gravity Work in a One Dimensional Universe?
- -Job-
- · Replies 0 ·
Graduate Does the Mass Density of an Object Change When Approaching the Speed of Light?
- Entropy
- · Replies 6 ·
Undergrad Is time in the universe constant?
- cosmic time
- · Replies 3 ·
Graduate Wormholes and energy conservation
- Azael
- · Replies 11 ·
Graduate Is mass dependent on the observer?
- Razor436
- · Replies 3 ·
Graduate Does a Muon Centrifuge Experiment Show Gravitational Time Effects?
- TheAntiRelative
- · Replies 19 ·
Graduate Why Is Newton's Constant Used in Planck Units?
- PhiJ
- · Replies 9 ·
Graduate Time dilation and infinite speed
- bort
- · Replies 25 ·
Graduate Globally Hyperbolic Spacetime: What Is It?
- robousy
- · Replies 6 ·
Undergrad Does Photon Age Change in Different Mediums?
- Ajoo
- · Replies 16 ·
Undergrad How Does Light Speed Change in Relativity?
- thought
- · Replies 7 ·
Graduate Is Gravitational Potential Energy Not Really Energy for Photons?
- PhiJ
- · Replies 17 ·
Graduate New Bee question on Gauss Coordinates systems
- eon_rider
- · Replies 5 ·
High School Uncovering the Truth Behind E=mc²
- Anything
- · Replies 8 ·
Graduate Energy extraction from a black hole and relativistic infinities
- Longstreet
- · Replies 10 ·
Undergrad Why do objects shorten as they travel faster?
- scott_alexsk
- · Replies 8 ·
Graduate Relativity and the Dark Energy question
- aokrongly
- · Replies 5 ·
Graduate Why Does the Standard Kinetic Energy Formula Fail at High Velocities?
- finchie_88
- · Replies 1 ·
Undergrad Why don't we have potentials in relativity?
- preet0283
- · Replies 10 ·
Undergrad Is momentum conserved in all inertial frames?
- MichaelW24
- · Replies 6 ·
Graduate Could any curved space be a cut in a higher-dimensional flat space ?
- lalbatros
- · Replies 11 ·
Graduate How do GR effects influence escape velocity in stars and black holes?
- Zanket
- · Replies 19 ·
Undergrad Does moving through time give kinetic energy like moving through space?
- nemosum
- · Replies 86 ·
Graduate Understanding Metric Tensors in Riemannian Spaces
- yukcream
- · Replies 6 ·
Graduate Pushing Pole: When Will Opposite End Move?
- cdm1a23
- · Replies 9 ·
Graduate Idea of increased mass at relativistic speeds
- mitchellmckain
- · Replies 103 ·
Graduate How does simultaneity change between observers in the same reference frame?
- asdf60
- · Replies 4 ·
Graduate Length contraction of a light-year wall at 0.99999c
- Wizardsblade
- · Replies 8 ·
Graduate Proof of Gravity Waves Energy: Richard Feymann's Beads on a Rod
- daniel_i_l
- · Replies 4 ·
Graduate Does length contraction affect molecular structure at relativistic speeds?
- Quan Chi
- · Replies 5 ·
Graduate Paralel universe and Warping of Space Questions
- ngkamsengpeter
- · Replies 1 ·
Graduate Can a spinning disk create Earth-like gravitational distortion?
- agemo
- · Replies 2 ·
Graduate Supplies Paradox Help: Solving Lorentz Contraction
- skywolf
- · Replies 8 ·
Graduate Is Light's Speed Truly Constant in All Frames of Reference?
- madhumadanan
- · Replies 1 ·
Graduate Paradox of mass in a magnetic field
- pmb_phy
- · Replies 3 ·
Graduate Can a warp drive work with negative energy, or is it too unrealistic?
- Whitestar
- · Replies 29 ·
Undergrad Where Does the Extra Energy Come From in a Gravitational Field?
- daniel_i_l
- · Replies 12 ·
Undergrad Physics Theories: Do Photons Have Mass in Motion?
- silici
- · Replies 9 ·
Graduate Can light exceed its own speed like a sonic boom?
- Albert Einstein III
- · Replies 19 ·
Graduate Can photons hitting metal create antimatter for faster-than-light propulsion?
- Tom10331
- · Replies 6 ·
Graduate How does GR account for Coriolis forces on a rotating sphere?
- dand5
- · Replies 4 ·
Graduate Simplest question to articulate concepts in General Relativity
- my_wan
- · Replies 2 ·
Graduate How to detect rotation in a flat spacetime frame
- dand5
- · Replies 7 ·
Graduate STR, one-way speed of light and conventionality
- n8trix
- · Replies 16 ·
Graduate 4D spacetime Light cone Twins paradox
- eon_rider
- · Replies 30 ·
Graduate Solve Eq. (9.58) on Schutz Page 246 - A First Course in GR
- Jimmy Snyder
- · Replies 2 ·
Graduate How Can Light Have Speed Yet Be Timeless?
- daniel_i_l
- · Replies 8 ·
Graduate Is Time Truly the Fourth Dimension or Something Else Entirely?
- minase
- · Replies 2 ·
Graduate Old Book Review - Classical Charged Particles
- pmb_phy
- · Replies 1 ·
Graduate What causes the apparent falling of objects in general relativity?
- daniel_i_l
- · Replies 13 ·
Graduate Can Chromatic Aberration Create Gravitational Fields?
- extreme_machinations
- · Replies 20 ·
Graduate Does a photon gain mass if slowed to half the speed of light?
- golith
- · Replies 3 ·
High School Is acceleration due to gravity a real phenomenon?
- Caesar_Rahil
- · Replies 12 ·
Graduate How to Calculate the Length of Energy-Momentum Four-Vectors?
- Jamesss
- · Replies 5 ·
Graduate Can spacetime exist without light?
- dubmugga
- · Replies 5 ·
Graduate Is the Maximum Magnetic Field in Neutron Stars Related to Spacetime Curvature?
- Tyson
- · Replies 1 ·
Graduate Origin of 4-momentum - Hisorical Ref.
- pmb_phy
- · Replies 4 ·
Graduate Proving the tensor virial theorem from T^{μν}_{,ν} = 0
- Jimmy Snyder
- · Replies 6 ·
Graduate What happens to time near a black hole's event horizon?
- Mike AkA Don
- · Replies 2 ·
Undergrad How Does Relativity Affect Perception of Time and Space?
- Shark
- · Replies 3 ·
Undergrad Relativity and the Laser Beam: Is Faster-Than-Light Travel Possible?
- Cosmo16
- · Replies 4 ·
Graduate Is there a limit on the mass of a black hole?
- kokain
- · Replies 11 ·
Graduate Special relativity handles acceleration, not just constant motion
- masudr
- · Replies 4 ·
Geometry and the Universe - A symposium on GR
- ZapperZ
- · Replies 2 ·
Gravity Probe-B Completes Mission
- neutrino
- · Replies 7 ·
Graduate Question posed in a science magazine
- jimmies
- · Replies 6 ·
Graduate GR: A First Course Q: What is "That Region" on Page 226?
- Jimmy Snyder
- · Replies 4 ·
Graduate Does the Force Propelling a Spaceship Affect the Speed of Light Emitted from It?
- stallion
- · Replies 1 ·
Graduate Observing objects while traveling at light speed
- -Job-
- · Replies 5 ·
Graduate Schutz, page 226 - Black hole formation
- Jimmy Snyder
- · Replies 8 ·
Graduate Unification of space and matter
- thought
- · Replies 5 ·
Undergrad Why does light have the speed it does?
- cybernomad
- · Replies 3 ·
Graduate First evidence that general relativity must be revised
- David
- · Replies 8 ·
Graduate Possible error in Schutz equation 9.45 for driven oscillator amplitude
- Jimmy Snyder
- · Replies 2 ·
Graduate Nothing can exceed the speed of light
- cdm1a23
- · Replies 20 ·
High School Is the Sun Actually Orbiting the Earth?
- Smurf
- · Replies 11 ·
Graduate Energy of a photon in different frames.
- Uniqueuponhim
- · Replies 29 ·
Graduate Stephen Hawking and time travel
- jhe1984
- · Replies 5 ·
Graduate Faster Than Light Communication/Transportation Not Possible?
- Gold Barz
- · Replies 33 ·
Graduate Sharing past papers on general relativity
- yukcream
- · Replies 10 ·
Graduate Pp waves - Null dust solutions
- robousy
- · Replies 1 ·
Graduate Lorentz contraction in Special Relativity
- AA Institute
- · Replies 12 ·
Graduate Why is 4-velocity Vector u'=dx^i/ds?
- yukcream
- · Replies 19 ·
Graduate Why decompose the Ricci tensor into scalar, traceless and Weyl parts
- robousy
- · Replies 3 ·
Graduate Does the interior/exterior of a 3-sphere exist in GR and QFT?
- robousy
- · Replies 2 ·
Graduate Question on Weak Energy Condition
- robousy
- · Replies 2 ·
Graduate What Happens to Mass During the Annihilation of an Electron-Positron Pair?
- trichop
- · Replies 10 ·