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 Gravity Affect Pressure and Curvature in Space?
- Derektquestions
- · Replies 4 ·
Graduate Mathematical relation between dipole moment and frequency?
- anum fatima
- · Replies 3 ·
Graduate Relativity: Energy in AC Circuits & Mass Momentum
- marlowgs
- · Replies 15 ·
Graduate Twin Paradox (again(again(again )))
- blue_leaf77
- · Replies 35 ·
Graduate What Theories Explore the Deeper Meaning Behind the Constancy of c?
- rumborak
- · Replies 3 ·
Graduate Can You Travel Faster Than Light According to Physics?
- kairama15
- · Replies 3 ·
Graduate What is the relationship between spin connections and tetrads on a 2-sphere?
- exponent137
- · Replies 6 ·
Graduate Speed of Light Aboard a Spaceship: An Overview
- TheLil'Turkey
- · Replies 1 ·
Graduate Is there any experimental evidence against preferred frame?
- SpiderET
- · Replies 1 ·
Graduate Time dilation: speed relative to what?
- Grimble
- · Replies 71 ·
Graduate Does spacetime imply fatalism?
- RisingSun361
- · Replies 2 ·
Graduate Derivative of metric with respect to metric
- Bitometry
- · Replies 13 ·
Graduate Parallel transport to explain motion of light near black hole?
- bcrowell
- · Replies 31 ·
Graduate Lifetime of Universe: Limits & Expansion Explained
- unscientific
- · Replies 4 ·
Undergrad Space-Time Singularity: What, How, and Is It Possible?
- Mohan Nivas
- · Replies 6 ·
Undergrad How Do Black Holes Acquire More Mass Than Other Objects?
- Mohan Nivas
- · Replies 11 ·
Graduate Contravariant & Covariant Vectors: Electric Field Case
- Coffee_
- · Replies 14 ·
Graduate Relativistic generalization of Larmor fomula?
- genxium
- · Replies 5 ·
Graduate Equivalence principle and time dilation
- RisingSun361
- · Replies 34 ·
Graduate Affine parameterization of a light ray
- kkz23691
- · Replies 7 ·
Graduate Schwarzschild vs vs Alcubierre & Time Dilation
- Prierin
- · Replies 8 ·
Undergrad How can (1/2)mv^2 and p^2/2m give different results?
- sawer
- · Replies 15 ·
Graduate What is the physics behind GR's diffeomorphism invariance?
- itssilva
- · Replies 30 ·
Graduate Relativistic Kinetic Energy as a solution to a DE
- AVentura
- · Replies 23 ·
Graduate Plugging Godel Metric's Line Element into Software for Covariant Einstein Tensor
- space-time
- · Replies 1 ·
Graduate Can time equal 0 in a Singularity?
- Baddness
- · Replies 14 ·
Graduate Energy Formulas in SR: Explained
- PWiz
- · Replies 42 ·
Graduate Trouble wrapping my head around GR
- xcourrier
- · Replies 17 ·
Graduate Covariant Derivative - where does the minus sign come from?
- unscientific
- · Replies 9 ·
High School What is the Real Life Twin Paradox?
- nitsuj
- · Replies 10 ·
Graduate Orthonormal Basis in General Relativity - Carroll
- exponent137
- · Replies 3 ·
Graduate Understanding General Relativity & Quantum Gravity
- Timothy S
- · Replies 4 ·
Graduate Redshift in Terms of k | General Relativity
- unscientific
- · Replies 1 ·
Graduate Relativistic mass in Six Not-so-easy Pieces (Feynman)
- zthompson47
- · Replies 13 ·
Graduate Gauge Formalism of Gravity: A-Z Guide
- shereen1
- · Replies 2 ·
Undergrad Are time machines possible? (serious)
- sumana
- · Replies 5 ·
Graduate Yet another "never crosses the horizon" question
- JoeMath
- · Replies 12 ·
Graduate The Significance of FRW Metric for Cosmological Redshift
- binbagsss
- · Replies 1 ·
Graduate Help! EM Exam: Covariant LW Fields Derivation Questions
- decerto
- · Replies 1 ·
Graduate What is the Relationship Between Time and Matter?
- Salvador
- · Replies 5 ·
Graduate Explaining Magnetism Using Special Relativity
- doaaron
- · Replies 9 ·
Graduate Spacetime: Is There Zero Separation for Charged Particles?
- Strange design
- · Replies 7 ·
Graduate Gravitational Collapse Calculations Problem Solved
- ShayanJ
- · Replies 1 ·
Graduate Length contraction test in electrical circuits
- exmarine
- · Replies 11 ·
Graduate Escape the Horizon: Can I Pull My Friend Back?
- RandyD123
- · Replies 15 ·
Graduate What is the significance of hypervolume in quantum physics?
- Helios
- · Replies 10 ·
Graduate Product of Tangent Vectors & Affine Parameter
- binbagsss
- · Replies 4 ·
Graduate Dirac theory over gravitational constant reduction.
- aditya ver.2.0
- · Replies 2 ·
Graduate Does Entering a Black Hole Speed Up Universal Aging?
- jimmycricket
- · Replies 43 ·
Undergrad Algebra Question: Where Does the 2 Come From?
- binbagsss
- · Replies 1 ·
Graduate Schwarzschild Extension Coordinate Transformation Algebra
- binbagsss
- · Replies 8 ·
Graduate Force in the Centre of a Black Hole: Explained
- Matthew Goldman
- · Replies 4 ·
Graduate Clarifying Black Hole Horizons: An Examination of Observer Perspectives
- wabbit
- · Replies 133 ·
Graduate Comoving/Proper distance, transverse comoving distance
- unscientific
- · Replies 1 ·
Undergrad Time Dilation on Earth: Why Hemisphere Matters
- Philjhinson
- · Replies 59 ·
Undergrad Light Travel After Big Bang: Baseball Universe Impact
- Pjpic
- · Replies 7 ·
Graduate Tod & Hughston GR Intro: FRW Metric Derivation w/ R=6k or R=3k?
- binbagsss
- · Replies 4 ·
Graduate Computing trajectories in Schwarzschild spacetime
- bcrowell
- · Replies 35 ·
Graduate Curvature Singularity: Necessary & Sufficient Conditions
- binbagsss
- · Replies 5 ·
Graduate Is it possible to stop time completely?
- RisingSun361
- · Replies 6 ·
Graduate Light Speed at 0.8c: Is My Understanding Correct?
- RisingSun361
- · Replies 4 ·
Graduate Stationary/ Static Conditions Metric?
- binbagsss
- · Replies 6 ·
Graduate How does the curvature of spacetime affect space?
- RisingSun361
- · Replies 13 ·
Undergrad Is this quote from Steven Weinberg right?
- poom
- · Replies 24 ·
Graduate Help - Speed of Light: Get Answers to Your Questions
- Gordie19
- · Replies 3 ·
Graduate Godel Metric Cosmological Constant
- space-time
- · Replies 1 ·
Graduate Does Metric Signature Affect Torsion Definition?
- binbagsss
- · Replies 1 ·
Graduate If the local is defined as the 'Hubble radius'
- BTBlueSkies
- · Replies 5 ·
Graduate Ricci Tensor/Scalar Contraction Manipulation Q&A
- binbagsss
- · Replies 9 ·
Graduate Understanding Proper Time in General Relativity & Special Relativity
- binbagsss
- · Replies 8 ·
Graduate Question about Special Relativity and matching results
- boggledandnot
- · Replies 28 ·
Graduate Valence Tensor of "DVu/Du" Acting on Vector: Analyzing 1 to 1
- binbagsss
- · Replies 3 ·
Undergrad Speed of light vs speed of sound
- doaaron
- · Replies 32 ·
Undergrad Gravity & Matter: What is the Connection?
- Zwarmapapa
- · Replies 6 ·
Graduate What Causes Frame-Dragging? Explained in Vernacular
- Warp
- · Replies 3 ·
Graduate Will the Earth Observers See a Burning Spaceship?
- BTBlueSkies
- · Replies 9 ·
Graduate Bangs2.pdfEarman's "Lost Socks & Green Slime
- bcrowell
- · Replies 1 ·
Graduate Simultaneous birth of two people in an inertial frame
- samirgaliz
- · Replies 25 ·
Graduate Vanishing of Einstein tensor from Bianchi identity
- binbagsss
- · Replies 17 ·
Graduate Clocks Within Each Ship in Bell Spaceship Paradox
- 1977ub
- · Replies 141 ·
Graduate Questions on relativistic mass and directional relativity?
- iliedonUA
- · Replies 30 ·
Graduate Neutron Stars & SR: Explained for Discovery Channel
- TheTuringTester
- · Replies 7 ·
Graduate How Does a Neutron Star Affect the Mass of an Object Falling Into It?
- Ans
- · Replies 5 ·
Graduate Deriving Schwarz Metric Weak Limit: Carroll's Lecture Notes 1997
- binbagsss
- · Replies 1 ·
Graduate Riddle Me This: Vibrating at Light Speed & Time Travel
- SpanishOmelette
- · Replies 4 ·
Graduate FTL Expansion of Space: Rapidity & Infinity
- AlexDB9
- · Replies 8 ·
Graduate How to classify coordinate as S-L,Null,T-L?
- binbagsss
- · Replies 15 ·
Graduate Type Godel Metric Line Element - Get Help Here!
- space-time
- · Replies 2 ·
Graduate Inequalities. Special relativity.
- LagrangeEuler
- · Replies 9 ·
Graduate Weak Field Approx, algebra geodesic equation
- binbagsss
- · Replies 28 ·
Graduate Metric tensor with diagonal components equal to zero
- kkz23691
- · Replies 15 ·
Graduate Generalisation of Time Dilation
- Candidus
- · Replies 13 ·
Graduate Relative Velocities Equal in Std Config? Lorentz Transform
- genxium
- · Replies 3 ·
Graduate How to imagine higher dimensions?
- Saffat Rafsan
- · Replies 15 ·
Graduate Relativistic correction to the gravitational force?
- jk22
- · Replies 14 ·
Graduate Understanding the equivalence principle
- Jimster41
- · Replies 11 ·
Graduate Metric for uniform constant acceleration?
- exmarine
- · Replies 18 ·
Graduate Using General Relativity to analyze the twin paradox
- PeterDonis
- · Replies 152 ·
Graduate How do you calculate change in time at the speed of light?
- quincy harman
- · Replies 12 ·
Graduate Difficulties in the Computation of the Kretschmann scalar
- Hamilton
- · Replies 1 ·