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 Resolving the Three Colliding Observers Paradox in Special Relativity
- Meatlofe
- · Replies 28 ·
Undergrad Classical mass vs. relativistic mass for electronic analogy
- learn.steadfast
- · Replies 5 ·
Undergrad Relativistic mass increase (simple or not)
- sha1000
- · Replies 11 ·
High School Is Time Travel Feasible Within the Limits of Light and Atomic Interactions?
- Andrew0853
- · Replies 3 ·
Undergrad How Does Relativistic Angular Velocity Affect a Rotating Disk's Behavior?
- Tahmeed
- · Replies 26 ·
Undergrad Time Dilation and the Twin Paradox: A Look at the Relativistic Doppler Effect
- sha1000
- · Replies 26 ·
Undergrad Solving Covariant Derivatives: Minkowskian Metric
- davidge
- · Replies 17 ·
Undergrad Solving General Relativity Equations
- Arman777
- · Replies 16 ·
High School Understanding Centre of Mass in Stationary Objects
- Ross B
- · Replies 57 ·
Undergrad What happens to local clock when many observers are moving wrt each other?
- fondamental
- · Replies 20 ·
Undergrad Length-contraction time-dilation fallacy & length measurement
- Happiness
- · Replies 8 ·
Undergrad Relativity of Simultaneity: Analyzing Wavelengths
- Nickelodeon
- · Replies 5 ·
High School Understanding Earth's Time Difference from the Sun: 16-Minute Delay Explained
- Ross B
- · Replies 4 ·
Undergrad Can spacetime curvature be transformed away?
- FallenApple
- · Replies 5 ·
Undergrad What constrains the metric tensor field in GR?
- TGlad
- · Replies 22 ·
High School Being on a different IRF, wouldn't light appear to slow?
- WhoCares
- · Replies 10 ·
Undergrad Observing a mass forever approaching a BH, and BH growth
- wendisf
- · Replies 36 ·
Undergrad Can Emission Theory Produce Doppler-Shift Formula?
- Happiness
- · Replies 1 ·
High School Can a Spinning Object Increase its Mass through Acceleration?
- mpolo
- · Replies 82 ·
Undergrad How Ebeb's Diagram Reveals Time Dilation
- Grimble
- · Replies 92 ·
High School Does Earth's Mass Affect the Length of a Day?
- sanujan
- · Replies 2 ·
High School Can we detect changes inside a black hole through orbits?
- Torog
- · Replies 20 ·
Graduate Kerr-Newman BH Mass: Relationship to Angular Momentum & Charge
- Hiranya Pasan
- · Replies 4 ·
High School Gravity and the Direction of Time
- White Rook
- · Replies 2 ·
Undergrad Energy density and pressure of perfect fluid
- RiverL
- · Replies 1 ·
Undergrad Merging Charged BHs: Is A's Observation Continuous or Discontinuous?
- anorlunda
- · Replies 10 ·
Undergrad Twin paradox in GR - negative time?
- MrBlank
- · Replies 40 ·
Undergrad Questions I have been thinking of regarding black holes
- Klasvaakie
- · Replies 14 ·
Undergrad Where does the line element of Minkowiski space come from?
- Ahmed Atef
- · Replies 4 ·
Undergrad Relativistic Field Transformations and EM Waves
- calinvass
- · Replies 7 ·
High School Special Relativity: Time Dilation Explained
- mpolo
- · Replies 3 ·
High School Does Mass determine our depth in the fabric of space?
- genphis
- · Replies 48 ·
Graduate Solve Bending of Light Formula Problem
- alex4lp
- · Replies 3 ·
Undergrad Two Conserved Quantities Along Geodesic
- maughanster
- · Replies 6 ·
High School Uniform-gravitational time dilation -- exact or approximate
- Hiero
- · Replies 34 ·
Undergrad Is Time Just a Stubborn Illusion in the Block Universe Theory?
- tophatphysicist
- · Replies 131 ·
High School Universe Age and Size: A Matter of Perspective?
- Chris Miller
- · Replies 41 ·
High School What course would explain why c is a hard limit?
- ibkev
- · Replies 19 ·
Undergrad Time dilation in components of an object
- brainierthaneinstein
- · Replies 2 ·
Undergrad How do things pass through event horizons?
- FallenApple
- · Replies 17 ·
Undergrad Did Newton Believe in Absolute Motion? A Closer Look at His Arguments
- MikeGomez
- · Replies 5 ·
Graduate Schwarzschild-deSitter Metric: Radial Locations of Event Horizons
- Jim
- · Replies 2 ·
Undergrad Laws of physics and inertial systems
- Pushoam
- · Replies 7 ·
High School Special relativity and expansion of the Universe, A paradox
- Rafeek AR
- · Replies 47 ·
Undergrad What force accelerates a car down hill?
- Zutswang
- · Replies 33 ·
High School How are the concepts of space, time, and space-time related?
- uday01
- · Replies 10 ·
Undergrad Black Hole Formation Sequence: Time in the Equations?
- Funestis
- · Replies 5 ·
Undergrad Twin Paradox - Observation at Turnaround Moment
- Andy_K
- · Replies 20 ·
Undergrad Confusing descriptions of an "expanding" universe
- Ghost117
- · Replies 8 ·
Undergrad Spin 0 Particles & General Relativity | Carrolls Notes
- davidge
- · Replies 4 ·
Undergrad Why Denote 1 Form as dx? - Sean Carroll's Lecture Notes on GR
- Ron19932017
- · Replies 6 ·
Undergrad Frames of Reference and Time Perception in Space Travel
- Cathr
- · Replies 26 ·
Undergrad Finding Stress-Energy Tensor: General Rules & Variational Principle
- davidge
- · Replies 10 ·
High School Length Contraction: Real Compressive Forces?
- ibkev
- · Replies 11 ·
Undergrad EM Waves in a Rotating Frame: Questions & Answers
- Xynon
- · Replies 5 ·
Undergrad Calculating the Optical Appearance of Rolling Rings: A Methodology by Ø. Grøn
- Laurie K
- · Replies 1 ·
Undergrad Explore Black Hole Orbits with My Kerr Orbit Simulator on YouTube
- m4r35n357
- · Replies 44 ·
High School Preserve Fresh Meat: Spin at Relativistic Speeds?
- guigabyte
- · Replies 8 ·
High School Does Acceleration Affect Time Dilation?
- Chris Miller
- · Replies 82 ·
Graduate Algebraic Proofs of Levi-Civita Symbol Identities
- Geometry_dude
- · Replies 8 ·
Undergrad Einstein clock syncing with one way light emission absorber
- Alfredo Tifi
- · Replies 37 ·
High School Gravity facts, or close to fact
- omnip
- · Replies 5 ·
Undergrad Einstein's elevator: gravity without curvature?
- pervect
- · Replies 47 ·
Undergrad General Relativity as a Theory of Gravity Explained
- davidge
- · Replies 13 ·
High School Question about Curvature caused by Mass
- Deepak K Kapur
- · Replies 8 ·
High School Is this an incorrect treatment of SR? Oblique coordinates....
- Hiero
- · Replies 20 ·
High School Local/Proper Time of EM Waves: Explained
- stoomart
- · Replies 6 ·
High School Frame dragging and co-rotating shells
- Buckethead
- · Replies 14 ·
High School Equation for Relativistic Exhaust Velocity (Ve): Help Needed
- BitWiz
- · Replies 10 ·
High School Mechanism of Curvature of Space: Does it Happen Instantly?
- Deepak K Kapur
- · Replies 5 ·
Undergrad Investigating a Possible Derivation Error in f(R) Gravity Field Equation
- Dazed&Confused
- · Replies 12 ·
Undergrad Is the speed of light constant?
- Akwinder Singh Mander
- · Replies 20 ·
Undergrad Self-Study GR: Construct Contravarient/Covarient Orthogonal Basis
- Ron19932017
- · Replies 15 ·
Insights The Revival of Newton-Cartan Theory - Comments
- haushofer
- · Replies 9 ·
Undergrad Special Relativity Course at World Science University by Brian Greene
- Andy_K
- · Replies 4 ·
Undergrad Is the FLRW Metric the Only Form for One-Dimensional Maximally Symmetric Spaces?
- davidge
- · Replies 52 ·
High School Is the speed of light a degree of freedom?
- Killtech
- · Replies 33 ·
High School Send Information Faster than Light: Point A to B
- jonjacson
- · Replies 11 ·
Graduate Deriving Equations of Motion in GR
- Matter_Matters
- · Replies 4 ·
Graduate Usage of kinetic energy in proof for E=mc^2
- georg gill
- · Replies 6 ·
Undergrad Four-vector Dipole Moment: Electric & Magnetic
- arpon
- · Replies 2 ·
Undergrad Spacetime moving faster than speed of light?
- arlesterc
- · Replies 9 ·
Undergrad Mass/energy in general relativity
- Umaxo
- · Replies 30 ·
Undergrad A _perfectly_ symmetric twin paradox cases
- stefanbanev
- · Replies 35 ·
Undergrad Relativistic Rocket: Understanding Behavior & Speed Limit
- exponent137
- · Replies 14 ·
High School Question about time and particle interactions
- MrDickinson
- · Replies 30 ·
Undergrad 6-dimensional representation of Lorentz group
- Silviu
- · Replies 6 ·
Undergrad Deriving Schwarzschild Interior Boundary Conditions
- Ibix
- · Replies 3 ·
Undergrad Simultaneity hyperplanes "curved" while stationary?
- KyungMin
- · Replies 20 ·
Undergrad Parallel transport vs Fermi Transport
- davidge
- · Replies 5 ·
Undergrad Calculating Perturbative Expansion of Metric Inverse in Cosmology
- Frank Castle
- · Replies 1 ·
Undergrad Does ##x_\mu x^\mu## Equal ##(x_\mu)^2## in Einstein Notation?
- Silviu
- · Replies 4 ·
High School Time is neither matter nor energy then why it is influenced by Gravity?
- STAR GIRL
- · Replies 7 ·
High School Special relativity implies the space cannot be "closed"?
- Hiero
- · Replies 50 ·
Undergrad Why Schwarzschild Metric for Deflection of Light & Precession of Perihelia?
- davidge
- · Replies 4 ·
High School How to travel back in time according to General Relativity?
- TheQuestionGuy14
- · Replies 24 ·
High School Does Consciousness Create Time in a Timeless Space?
- BL4CKB0X97
- · Replies 45 ·
Graduate Why Orbital Time is 6πGM in Schwarzschild Geometry
- Jonsson
- · Replies 4 ·
High School Velocity-Composition Law w/ c=1: Deriving the Formula
- SiennaTheGr8
- · Replies 1 ·
Undergrad Metric transformation under coordinate transformation
- Tursinbay
- · Replies 9 ·