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 Two ships again [lets beat that dead horse]
- nearc
- · Replies 29 ·
Undergrad Understanding Length Contraction in Relativity: Explained and Analyzed
- durant
- · Replies 17 ·
Graduate Equation of state of photon gas
- 4everphysics
- · Replies 1 ·
Graduate Ladder Paradox: Understanding the Contradictory Length Contraction Phenomenon
- durant
- · Replies 24 ·
Graduate Faster than speed of light = time travel ?
- collector
- · Replies 7 ·
Graduate Michaelson-Morley expt. problem
- rushikesh
- · Replies 4 ·
Graduate Do the Large Hadron Collider take earth's rotational speed?
- howabout1337
- · Replies 38 ·
Graduate Center of Mass: Definition, 3D Calculation & Frame
- Dgonzo15
- · Replies 2 ·
High School The Speed of Light: Explaining Theory & Experiments
- 462chevelle
- · Replies 4 ·
Graduate Calculating Relativity with Different Speeds: Vacuum or Medium?
- User11037
- · Replies 5 ·
Graduate Is Widely Separated in Relativity About Space or Perception?
- Physic lover
- · Replies 19 ·
Graduate How is the effective Lagrangian for the Graviton coupling to matter derived?
- Karatechop250
- · Replies 5 ·
Graduate Magnetic field relativistic effect
- cabrera
- · Replies 15 ·
High School Speed of photons and its effect on us
- giananimohit
- · Replies 10 ·
Graduate Spherical symmetric collapse of pressureless dust
- tom.stoer
- · Replies 3 ·
Graduate The light-cone and light-cone variables
- Demon117
- · Replies 3 ·
Undergrad Perceiving light/lighspeed (question)
- AnonymousTeen
- · Replies 15 ·
Graduate Feynman's vs wiki's relativistic resultant
- galvin452
- · Replies 7 ·
Graduate Photons live in a singularity?
- wjmt88
- · Replies 11 ·
Graduate Proper time of a 'half-moving object'
- durant
- · Replies 86 ·
Graduate Conservation of Relativistic energy and momentum
- tade
- · Replies 11 ·
Graduate Time dilation, reference frames
- casualreader
- · Replies 6 ·
Graduate Measuring Length with Oscillating Rods
- satyudhi
- · Replies 1 ·
Graduate If light-speed is invariant,why RoS exist?
- ash64449
- · Replies 2 ·
Undergrad Time Dilation Explained: T=T(P)*γ Example
- Dgonzo15
- · Replies 2 ·
Graduate Can we really ever accurately test SR time dilation?
- DiracPool
- · Replies 123 ·
Graduate Confusion about Lorentz Transform
- thrush
- · Replies 3 ·
Undergrad Good books on both Relativities
- JamesOrland
- · Replies 29 ·
Graduate Schwarzchild radial coordinate
- maxverywell
- · Replies 13 ·
Graduate EFE Solutions: Kerr, Mass, Energy, Metric Tensor
- zepp0814
- · Replies 3 ·
Graduate Equivalence Principle: Questions Explained
- dubiousraves
- · Replies 2 ·
Graduate Is There a Connection Between Movement Through Space-time and Aging?
- ChrisXenon
- · Replies 50 ·
Graduate On Einstein´s theory of curved spacetime.
- svenraun
- · Replies 3 ·
Graduate Local flatness for non-freely falling observers?
- center o bass
- · Replies 40 ·
Graduate Time Dilation Problem: Help Solve Light Beam Issue
- Dgonzo15
- · Replies 2 ·
Undergrad Time Dilation Equation: Clarifying Variables
- Dgonzo15
- · Replies 3 ·
Graduate Uncovering the Mystery of Hidden Momentum in E&M
- bcrowell
- · Replies 13 ·
Graduate Classic or General Relativity: Photon in Gravitational Field
- birulami
- · Replies 1 ·
Graduate Time-dialation and light clock
- Erika E.
- · Replies 3 ·
High School Do we live in 3 or 4 dimensions?
- Stricklandjr
- · Replies 71 ·
Graduate What are the equations for a massless particle's worldline?
- NeedsHelpBadly
- · Replies 15 ·
What do black holes look like?
- DeeAytch
- · Replies 10 ·
Graduate Confirm: Smooth Twin Paradox Intuition
- epovo
- · Replies 40 ·
Graduate Ehrenfest's Paradox: Resolving the Kinematical Solution
- center o bass
- · Replies 36 ·
Graduate 3 questions regarding velocity and the speed of light
- mpatryluk
- · Replies 6 ·
Graduate Unraveling the Implications of Simultaneity in Special Relativity
- durant
- · Replies 13 ·
Graduate Photon frequency in different inertial frames
- MHD93
- · Replies 2 ·
Graduate Interpret Relativistic Momentum: Facts & Popular Opinion
- SheikYerbouti
- · Replies 6 ·
Graduate Is gravity a force, or the curvature of space?
- Thomas1989
- · Replies 6 ·
Graduate What are closed time-like curves and how are they related to General Relativity?
- zepp0814
- · Replies 7 ·
Undergrad Is Speed an Illusion in Physics?
- megacal
- · Replies 12 ·
Graduate Is Time Slowing or Are Processes Slowing Near High Gravity and Speeds?
- dayalanand roy
- · Replies 137 ·
Undergrad Question Regarding Perception of Time
- Billiards1974
- · Replies 11 ·
Graduate How do we know space and time are related?
- ryanvb03
- · Replies 20 ·
Graduate Relative Velocity: Jack & Particle - v to V
- Izzhov
- · Replies 7 ·
High School Gravity at Earth's Center: Does Weightlessness Follow?
- enokwei perez
- · Replies 9 ·
Graduate Ricci tensor of the orthogonal space
- PLuz
- · Replies 3 ·
Graduate Can time be stopped in special relativity?
- durant
- · Replies 13 ·
Graduate Definition of isometry in components form
- maxverywell
- · Replies 12 ·
Graduate Reference frames, reference particles, coordinate systems and all that
- center o bass
- · Replies 18 ·
Graduate Photon Mass and Momentum: Train Experiment
- lntz
- · Replies 4 ·
Graduate Gravitation in General Relativity.
- klen
- · Replies 5 ·
Undergrad Einstein notion of time and the oscillation of the cesium atom
- azoulay
- · Replies 99 ·
Graduate Local Lorentz Frames: Definition & Context for GR
- WannabeNewton
- · Replies 47 ·
Graduate Does Special Relativity Predict Zero Acceleration in Free Fall?
- harrylin
- · Replies 177 ·
Graduate Outrunning Light; how quickly will light catch up with you
- CarsonAdams
- · Replies 5 ·
Graduate Events in Relativity: Can Simultaneous Occurrences Exist?
- Salman2
- · Replies 10 ·
Graduate Minkowski diagram, what does observer see.
- Myslius
- · Replies 26 ·
Graduate Curvature of Spacetime: Is the Universe Flat or Curved?
- Madster
- · Replies 11 ·
Graduate Thomas Precession, Angular Momentum, and Rotating Reference Frames
- Izzhov
- · Replies 6 ·
Graduate Father-Son Paradox: Explaining Time Dilation
- kannan_k
- · Replies 4 ·
Graduate Can we truly understand motion through spacetime?
- maxverywell
- · Replies 18 ·
Graduate Any in depth explanations on why near lightspeed affect aging?
- viktorem
- · Replies 21 ·
Graduate Is there always the same amount of spacetime curvature in the uni.?
- 49ers2013Champ
- · Replies 5 ·
Graduate Gravity is different - infinite energy stored
- Lapidus
- · Replies 4 ·
Graduate Partitioning Mass in GR: A Cautionary Tale
- pervect
- · Replies 3 ·
Undergrad What keeps the planets in orbit
- G.U.T.finder
- · Replies 2 ·
Graduate Gravity exerted by a fast moving object versus stationary object?
- bcrelling
- · Replies 61 ·
Graduate Lorentz transformation matrix applied to EM field tensor
- qtm912
- · Replies 8 ·
Graduate Geometric Description of Free EM Field
- dextercioby
- · Replies 5 ·
Graduate Timelike Killing vector field and stationary spacetime
- maxverywell
- · Replies 21 ·
Graduate E=MC^2 Mass and Energy, synonymous?
- slickjunt
- · Replies 79 ·
Graduate Why do we move at the speed of light?
- guitarphysics
- · Replies 41 ·
Graduate Is there really no answer to what gravity is?
- slibbfalusken
- · Replies 11 ·
Graduate Need Intuition Behind Expansion of Smaller Structures in the Universe
- mmiguel
- · Replies 13 ·
Graduate Wrong signs Ricci tensor components RW metric tric
- enomanus
- · Replies 2 ·
Graduate Is the Speed of Light Tied to the Plank Distance and Time?
- Quinzio
- · Replies 11 ·
Graduate Energy left of body falling down to Schwarzschild radius
- Agerhell
- · Replies 12 ·
Graduate Spherically symmetric spacetime
- maxverywell
- · Replies 8 ·
Graduate Why there is a minus sign in the Killing's equation
- maxverywell
- · Replies 2 ·
Graduate Special Relativity, four-momenta questions.
- peripatein
- · Replies 13 ·
Undergrad Seeking clarification on red-shift
- acesuv
- · Replies 1 ·
Graduate Help with time-space diagram equations.
- v3ra
- · Replies 3 ·
Undergrad Why things like relativity and evolution aren't called laws?
- jaydnul
- · Replies 3 ·
Graduate Understanding Proper Time Concept in Relativity: Clock Readings and Observers
- Volcano
- · Replies 15 ·
Graduate Deriving Invariant Distance in Space Time: Pythagorean Theorem
- moatasim23
- · Replies 27 ·
Graduate Are classical models of electrons with spin limited by the speed of light?
- michael879
- · Replies 9 ·
Undergrad Does the law of universal gravity exist?
- michael92
- · Replies 16 ·
Graduate Question about spacetime curvature
- surprise
- · Replies 20 ·
Graduate Are all objects crossing the event horizon travelling at C?
- Stonius
- · Replies 28 ·