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
Undergrad Coordinates for diagonal metric tensors
- Ibix
- · Replies 12 ·
Undergrad Gravity Propagation: How Does Time Affect Orbital Modeling?
- TheGalaxyOfGold
- · Replies 2 ·
Undergrad Mass/Density Increase in Motion: Relativistic or Observable?
- CasualCalculus
- · Replies 9 ·
Undergrad Energy stored in space-time or space?
- Euthan
- · Replies 7 ·
Undergrad What is the mechanism by which energy/stress curves spacetime
- Sorcerer
- · Replies 39 ·
Undergrad What Happens to Objects When the Higgs Field is Negated?
- BadgerBadger92
- · Replies 9 ·
Undergrad The light from Mercury, the Sun's corona and gravity
- Wondermine
- · Replies 3 ·
Undergrad Uniform gravity's space-time curvature
- max_zhou
- · Replies 26 ·
High School Confirmation of c as Invariant Speed in Our Universe?
- tworitdash
- · Replies 8 ·
High School Gravity in Hollow Shell: Nonadditivity and Relativistic Self-Interaction
- snorkack
- · Replies 2 ·
High School Photon Travel: Is Our Universe a Single Point?
- tworitdash
- · Replies 9 ·
Undergrad Constancy of the speed of light
- Killtech
- · Replies 50 ·
High School Special relativity - frame of reference
- victorqed
- · Replies 123 ·
Undergrad Detecting Gravitational Waves & Alcubierre Drive
- JasonGodbout
- · Replies 1 ·
Undergrad GR in Milky Way: Approximating an Inertial Ref Frame?
- Sorcerer
- · Replies 9 ·
High School Solve Relativistic "Bug on Band" Problem
- Hiero
- · Replies 3 ·
Undergrad Time Dilation: A & B's Age Difference
- jha192001
- · Replies 7 ·
Undergrad Would Relativistic Effects Exist Without an Ultimate Speed?
- Jazzyrohan
- · Replies 4 ·
Undergrad The Potential: Harnessing Energy to Create Mass and Possibly Universes
- member 342489
- · Replies 9 ·
Undergrad Do black holes accumulate neutrinos?
- synch
- · Replies 26 ·
Undergrad Does an Electron's Field Expand at c Upon Spontaneous Creation?
- idea2000
- · Replies 5 ·
High School Inertial Objects: Acceleration & Direction
- jaketodd
- · Replies 70 ·
High School Lightning Flash Intensity & Color Shift for Moving Train Observers
- FactChecker
- · Replies 15 ·
Undergrad Number of Solutions of Einstein Field Equations w/ Zero Pressure
- kent davidge
- · Replies 16 ·
High School Effects on Area Outside Wormhole: Radiation, Magnetic Field, Anomalies
- Michael Chase
- · Replies 6 ·
High School Relativistic Physics: Gravitational & Inertial Mass
- Lee Sung Bin
- · Replies 9 ·
Undergrad How does the speed of light affect clocks?
- Sonderval
- · Replies 10 ·
High School Can an observer perceive he is traveling faster than light?
- GrantSB
- · Replies 27 ·
High School Multiple Curves in Space-Time: Masses on a Trampoline
- BeedS
- · Replies 6 ·
Undergrad How does the motion of colliding billiard balls change under Special Relativity?
- neilparker62
- · Replies 10 ·
Undergrad Calculating Velocity: Moon Around Earth & Clocks in Burj Khalifa
- Anakin Delabelle
- · Replies 3 ·
High School Gravitational Time Dilation: Math Formula for Clock-Slowing Factor
- jeremyfiennes
- · Replies 9 ·
Undergrad Hash marks on minkowski diagram
- idea2000
- · Replies 8 ·
Undergrad Derivation of Rindler Metric and How It Resolves the Twin Paradox
- Chare
- · Replies 9 ·
Undergrad Does the Invariance of Proper Time Lead to the Lorentz Transformation?
- idea2000
- · Replies 26 ·
High School Black Holes Collide at 0.999c - What Happens?
- arusse02
- · Replies 14 ·
Undergrad Is There a Preferred Direction in Time?
- idea2000
- · Replies 7 ·
Undergrad Non-inertial reference frames question
- Freixas
- · Replies 34 ·
Undergrad SR Light Wavelength & Direction: Questions Explained
- Amaterasu21
- · Replies 6 ·
High School Refined Interpretation of Relativity of Simultaneity?
- Buckethead
- · Replies 9 ·
Undergrad Time Dilation Explained: Feynman Lectures 15-4
- Jazzyrohan
- · Replies 9 ·
High School What if light were influenced by gravity?
- Antonio dela Vinci
- · Replies 31 ·
Graduate Momentum calculation of a rotating rod
- liuxinhua
- · Replies 56 ·
High School Light Speed: Questions from a Layman
- Sir Deja Doog
- · Replies 16 ·
Graduate Constructing Bondi Coordinates on General Spacetimes
- leo.
- · Replies 4 ·
High School Time Travel into the Future: What Would Be the Reason?
- RandyD123
- · Replies 9 ·
High School Find a Virtual SR Globe App - SiennaTheGr8
- Grinkle
- · Replies 3 ·
Undergrad How certain are we about black hole mass density?
- hkyriazi
- · Replies 55 ·
Undergrad Question about length contraction
- Nathan123
- · Replies 71 ·
Undergrad Understanding Black Hole Entropy: Consistency Across Reference Frames
- FallenApple
- · Replies 1 ·
Undergrad Why did Einstein considered it “evident”?
- Alfredo Tifi
- · Replies 18 ·
Undergrad Does a Photon Carry Velocity of Its Source?
- vincent
- · Replies 2 ·
Undergrad Symmetry Group Freedom: Choosing How Groups Act on Coordinates
- kent davidge
- · Replies 1 ·
Undergrad Length Expansion Opposite Direction: SR Simultaneity Explained
- Nathan123
- · Replies 8 ·
Graduate General Relativity Book Recommendations
- Sandeep T S
- · Replies 1 ·
High School Gravity Power: What Gives It the Ability to Accelerate Objects?
- harrylentil
- · Replies 6 ·
High School Do single moving charges create magnetic fields, why?
- Jonathan1218
- · Replies 6 ·
High School Help with constant acceleration under special relativity
- McSeb
- · Replies 14 ·
Undergrad Relative Simultaneity: Free Resources to Help You Understand
- Kiley
- · Replies 16 ·
Undergrad Massless Electron Compton Scattering: Energy of Outgoing Photon
- Silviu
- · Replies 1 ·
Undergrad Which Calculation Is Correct for Meteor Evasion Time in Spacetime Physics?
- bksree
- · Replies 2 ·
Undergrad Why do we need to modify GR with theories like F(R) ?
- Safinaz
- · Replies 13 ·
High School Time & Limit Velocity (Speed of Light)
- alejandromeira
- · Replies 17 ·
Undergrad Inertial frame of freely falling body
- bksree
- · Replies 16 ·
Undergrad Understanding the Speed of Light in Ether: A Historical Perspective
- Luis Babboni
- · Replies 10 ·
High School Calculate Proper Time for Two Events in Special Relativity
- electronneutrino
- · Replies 5 ·
Undergrad Wave Cuadrivector: Proving Four-Vector Invariance of Light Velocity
- facenian
- · Replies 14 ·
Undergrad Musings, seeking opinions about the nature of time
- Kenwstr
- · Replies 1 ·
Undergrad A question about Alice and Bob in SR
- MathematicalPhysicist
- · Replies 31 ·
Graduate Is a volume element in relativity represented by a vector?
- pervect
- · Replies 11 ·
Graduate Electromagnetism for Media in Arbitrary Motion
- Cryo
- · Replies 8 ·
Undergrad Interstellar Travel vs Universe Expansion: Is Andromeda Reachable?
- kent davidge
- · Replies 1 ·
Undergrad Audio question about black hole
- Ryan Walsh
- · Replies 3 ·
Undergrad How Does Gravity Specifically Influence Mass?
- synch
- · Replies 5 ·
High School Gravitational Event Horizon: Two Interpretations
- Netspirit
- · Replies 18 ·
High School Calculating Lorentz Factor with V=0
- sqljunkey
- · Replies 2 ·
Undergrad Relativity of Simultaneity: Observers Perceiving 3 Events
- NTHstars
- · Replies 9 ·
Graduate Causal Structure of Metric Prop.: Matrix Size Differs
- smoking-frog
- · Replies 12 ·
Undergrad Coordinate transformations in GR
- eoghan
- · Replies 29 ·
High School Is Time Experienced by Photons at the Speed of Light?
- YoungPhysicist
- · Replies 84 ·
Undergrad Relativistic harmonic oscillator
- gerald V
- · Replies 7 ·
Undergrad Understanding Lorentz Transform Outputs
- TomTelford
- · Replies 10 ·
Undergrad Relativistic speed of a rocket with constant thrust
- Flisp
- · Replies 114 ·
Undergrad How Does Special Relativity Challenge Our Understanding of Absolute Time?
- name123
- · Replies 200 ·
Undergrad Why Does Energy Have Mass in Quantum Field Theory?
- Hasan Delifer
- · Replies 10 ·
Undergrad GPS relativity error - really?
- Prometeus
- · Replies 31 ·
Graduate What is the Relativity of Wrong?
- FallenApple
- · Replies 4 ·
High School Energy & Momentum of Spacetime w/o Mass
- sqljunkey
- · Replies 7 ·
Undergrad Cylindrical Microwave Cavity Resonator: Speed of Light Dependency?
- CompSci
- · Replies 2 ·
High School Deriving Lorentz Factor: An Analysis of Jimmy360's Method
- DatLemonDoe
- · Replies 4 ·
High School Using SR & Curved Coordinates for Time Calculation
- sqljunkey
- · Replies 3 ·
High School Can the Lorentz Factor Approach 0i as v Exceeds c for FTL Reference Frames?
- Chris Miller
- · Replies 12 ·
High School Difference Between Proper Time and Coordinate Time Explained
- TheQuestionGuy14
- · Replies 7 ·
Undergrad Gravity's Degrees of Freedom: Explored
- gerald V
- · Replies 7 ·
Graduate Unpacking Entropy Bounds and Their Violations
- martinbn
- · Replies 4 ·
High School Relativistic Kinetic Energy: Does Mass Change?
- Weam Abou Hamdan
- · Replies 3 ·
Undergrad A question about invariant mass
- liuxinhua
- · Replies 83 ·
Graduate Graviton Model: Can We Describe It Mathematically?
- alantheastronomer
- · Replies 8 ·
High School Can Tachyons Challenge Our Understanding of Physics?
- TheQuestionGuy14
- · Replies 12 ·
High School Proper Time Change: Helium 4 Superfluid Effects
- Ripperooster
- · Replies 8 ·