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 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 Unraveling the Mysterious Energy Gained from a Black Hole
- Longstreet
- · Replies 10 ·
Undergrad Object Shortening: Causes & Similarities to Time Dilation
- 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 Relativity: Understanding Potential | Explainer
- 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 Gaining Kinetic Energy Through Time: Explained
- 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 Simultaneity in Special relativity
- asdf60
- · Replies 4 ·
Graduate What Happens When a Light-Year-Long Wall Travels at Near Light Speed?
- Wizardsblade
- · Replies 8 ·
Graduate Proof of Gravity Waves Energy: Richard Feymann's Beads on a Rod
- daniel_i_l
- · Replies 4 ·
Graduate Length Contraction & Molecular Structure Effects
- Quan Chi
- · Replies 5 ·
Graduate Paralel universe and Warping of Space Questions
- ngkamsengpeter
- · Replies 1 ·
Graduate Garth & Einstein: Examining Rotational Mass & Spacetime 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 Understanding the Paradox of Mass in Relativity | Physics World
- pmb_phy
- · Replies 3 ·
Graduate Is Warp Drive Really Possible with the Help of Negative Energy?
- 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 Breaking the Sound Barrier: Ze Optical Boom by Albert Einstein ze Sird
- Albert Einstein III
- · Replies 19 ·
Graduate The Secrets of Antimatter and Fast Propelling Technology
- Tom10331
- · Replies 6 ·
Graduate GR & Coriolis Forces: Inertial Trajectories & Resources
- dand5
- · Replies 4 ·
Graduate Simplest question to articulate concepts in General Relativity
- my_wan
- · Replies 2 ·
Graduate Question about rotating frames
- 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 Exploring the Mass and Temperature of a Slower Photon: Half the Speed of Light
- golith
- · Replies 3 ·
High School Acceleration Due to Gravity: Facts & Qs
- Caesar_Rahil
- · Replies 12 ·
Graduate How to Calculate the Length of Energy-Momentum Four-Vectors?
- Jamesss
- · Replies 5 ·
Graduate Is light necessary for the existence of spacetime?
- 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 Solving Schutz Problem 23 (a & b): T^{\mu ν} Identity
- 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 The Limitless Fascination of Black Hole Mass: How Big Can It Get?
- kokain
- · Replies 11 ·
Graduate Acceleration in Special Relativity
- 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 Another Speed Of Light Travel Scenario
- -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 is the speed of light what it is?
- cybernomad
- · Replies 3 ·
Graduate GR Contest: Uncovering the First Evidence of Revision
- David
- · Replies 8 ·
Graduate Verifying Equations 9.45 & 9.46 in Schutz, pg. 224
- 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 Pastpaper on GR: Get Help & Resources
- 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 Ricci Decomposition: Questions & Answers
- robousy
- · Replies 3 ·
Graduate Exploring the Interior/Exterior of a 3 Sphere in GR
- 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 ·
Graduate Solving a Relativity Problem: Two MAsses in Motion
- trichop
- · Replies 8 ·
Graduate Does homogeneity infer isotropism?
- Loren Booda
- · Replies 6 ·
Undergrad Converting Energy to Mass: Is it Possible?
- Mandelbrot
- · Replies 3 ·
Graduate The distance-dependent nature behind lorentz time-transformation
- Twukwuw
- · Replies 5 ·
Graduate How do you verify that v/c=pc/E?
- asdf1
- · Replies 5 ·
Graduate How to deal with the index in Einstein summation?
- yukcream
- · Replies 6 ·
Undergrad Is cheating going on in Relativity?
- Sam Woole
- · Replies 56 ·
Graduate What is the Folding Space Theory and its Potential Applications?
- Seeruk
- · Replies 10 ·
Graduate Length Contraction & Angled Motion
- asdf1
- · Replies 2 ·
Graduate Proving Relativistic Kinetic Energy: (1/2)*(gamma)mv^2
- asdf1
- · Replies 6 ·
Graduate Simplifying Equations for Lorentz Boosts with Small Beta
- Jimmy Snyder
- · Replies 7 ·
Graduate Question from Schutz, A First Course in GR
- Jimmy Snyder
- · Replies 24 ·