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 Precession of the perihelion - Schwarzschild metric
- tel
- · Replies 3 ·
High School Does a Fourth Dimension Beyond Time Exist?
- minase
- · Replies 9 ·
Graduate Are there other phenomena (besides light) whose speed is invariant?
- quantumphilosopher
- · Replies 1 ·
Graduate Einstein's Special Theory of Relativity: Beam Angle
- pivoxa15
- · Replies 21 ·
Graduate Why did Einstein use light to define simultaneity?
- quantumphilosopher
- · Replies 5 ·
Graduate Does Gravity Affect the Local Speed of Light in Accelerated Frames?
- yogi
- · Replies 4 ·
Graduate Lightbulb Paradox: Solving John Wheeler's Problem in SpaceTime Physics
- daniel_i_l
- · Replies 2 ·
Graduate Pair production and another body?
- pivoxa15
- · Replies 12 ·
Graduate How Can Successive Boosts Illuminate the Lorentz Transformation?
- actionintegral
- · Replies 5 ·
Graduate Is Conservation of Scalar Quantities Possible in General Relativity?
- pivoxa15
- · Replies 14 ·
Graduate Is Time Merely a Consequence of Space and Speed Limit c?
- gruff
- · Replies 9 ·
Graduate Trying to understand relativity of lengths and times
- myoho.renge.kyo
- · Replies 31 ·
Graduate Figuring out the units for the cosmological constant
- Mike2
- · Replies 7 ·
Graduate Why Do Space-Time Diagrams Reverse Axes in Special Relativity?
- bernhard.rothenstein
- · Replies 3 ·
Graduate Understanding Spacetime Geometry: Timelike and Spacelike Vectors Explained
- jainabhs
- · Replies 6 ·
Graduate Does Mass Really Increase Infinitely as Objects Approach the Speed of Light?
- TDS
- · Replies 19 ·
Graduate Is e=mck Compatible with Einstein's Theory of Relativity?
- GautamAishwarya
- · Replies 1 ·
Graduate How Speed of Light Is the Same Speed in All Frames
- kant
- · Replies 12 ·
Graduate Was the Schwarzschild geometry acceptable
- lalbatros
- · Replies 6 ·
Graduate Question on Einstein's Equation
- timmy
- · Replies 1 ·
Graduate Speed of Moving Object: Exploring Length Contraction & Time Dilation
- petm1
- · Replies 4 ·
Graduate Resolving the Incompatibility of Special Relativity and Quantum Mechanics
- JustinLevy
- · Replies 2 ·
Graduate Proper time for an object falling into a black hole
- MeJennifer
- · Replies 5 ·
Graduate Relativity and Lorentz Symmetry: What is the Relationship to Reality?
- JesseM
- · Replies 55 ·
Graduate Negative Mass and its Implications
- Swapnil
- · Replies 3 ·
Undergrad The speed of light in a vacuum?
- Sauwelios
- · Replies 19 ·
Graduate How Do Time Sources and Space Sinks Relate to General Relativity?
- Jonny_trigonometry
- · Replies 4 ·
Graduate Important note concerning relativity of time
- myoho.renge.kyo
- · Replies 4 ·
Is Spacetime Shaped Like the Sea?
- ريمان
- · Replies 7 ·
Graduate What Is the Relationship Between Photon Mass and Frequency?
- lightarrow
- · Replies 2 ·
Graduate What is time dilation and how does it relate to Einstein's theory?
- petm1
- · Replies 108 ·
Graduate How Does Relativity Affect Movement on a Ship Near Light Speed?
- Castlegate
- · Replies 12 ·
Graduate Does Newtonian gravity bend light?
- smithpa9
- · Replies 31 ·
Undergrad Inertial Reference Frames- circular?
- AcidRainLiTE
- · Replies 34 ·
Graduate Freezing light contradicts Einstein?
- Robert E Dean
- · Replies 10 ·
Could You Pick Up an Airplane in Frozen Time?
- Quadruple Bypass
- · Replies 22 ·
Graduate ICAL SCIENCE: Unraveling Hawking's Paradox and Controversial Theories
- RAD4921
- · Replies 4 ·
Graduate Is General Relativity Actually an Aether Theory?
- Jonny_trigonometry
- · Replies 11 ·
Graduate SR transforms of matter/light interactions
- Leo.Ki
- · Replies 10 ·
Graduate A moving clock lags behind a stationary clock
- myoho.renge.kyo
- · Replies 2 ·
Undergrad Why Mass Doesn't Always Add When Two Systems Combine
- pivoxa15
- · Replies 20 ·
Graduate Twins Paradox: Does Twin A Die?
- jmenke
- · Replies 9 ·
Graduate Relativity and Absolute Space: A Reconciliation?
- pilopais
- · Replies 61 ·
Graduate Inertial mass, invariant mass and the photon?
- pivoxa15
- · Replies 12 ·
Graduate Black Holes and the Event Horizon?
- TDS
- · Replies 16 ·
Graduate How Fundamental Is General Relativity in Understanding Black Holes?
- lalbatros
- · Replies 1 ·
Graduate What is the Meaning of Action? Investigating the Connection between GR & QM
- lightarrow
- · Replies 6 ·
Graduate Einstein's original paper question
- 18t
- · Replies 1 ·
Undergrad Evidence for length contraction
- redruM
- · Replies 14 ·
Graduate Is Light-Like an Appropriate Term in Minkowski Space Terminology?
- actionintegral
- · Replies 7 ·
Graduate Correct derivation of magnetism from SR
- Hans de Vries
- · Replies 6 ·
Graduate Photons Perceive Universe as 2D: A Curious State?
- LHarriger
- · Replies 2 ·
Graduate Gyroscopic action on earth surface
- RandallB
- · Replies 6 ·
Undergrad Why Doesn't Relativity Apply to Light?
- Line
- · Replies 68 ·
Undergrad Einstein's theory of relativity?
- Indian_2006
- · Replies 10 ·
Graduate Relative Velocity II: Defining Relative Velocity in GR
- Oxymoron
- · Replies 30 ·
Graduate Dark Energy & Curvature of Spacetime
- heliocentricprose
- · Replies 4 ·
Graduate Are the transforms instantaneous?
- Leo.Ki
- · Replies 2 ·
Graduate What Sense Does High Velocity Travel Make? - Oh-My-God Particle
- KingOrdo
- · Replies 7 ·
Graduate Correct formula for gravitational redshift
- notknowing
- · Replies 12 ·
Graduate Nail and cylinder problem in SR
- lalbatros
- · Replies 8 ·
Undergrad Special Relativty and Inertial Reference Frames
- SudanBlack
- · Replies 3 ·
Undergrad How Relativity Connects Electric and Magnetic Fields
- nathan.br
- · Replies 2 ·
Graduate Stress-energy tensor as a 2-form
- pervect
- · Replies 9 ·
Graduate Does SR Affect Biological Processes? A Twin Experiment
- AlbertEinstein
- · Replies 10 ·
Graduate Mass Energy: Understanding Total, Rest and Kinetic Energies
- QuantumKing
- · Replies 44 ·
Graduate What causes space curves? Energy or rest mass?
- quasar987
- · Replies 29 ·
Graduate Relativity without the aether: pseudoscience?
- Aether
- · Replies 179 ·
Graduate Photons and potential energy wells.
- Atomos
- · Replies 8 ·
Graduate Lorentz Transformation - Exponential factor, why not Proportional?
- Gamish
- · Replies 43 ·
Graduate Why is t' not equal to t/sqrt(1-v^2/c^2) in relativity of time?
- myoho.renge.kyo
- · Replies 5 ·
Graduate A question regarding a specific interval of time and GR
- myoho.renge.kyo
- · Replies 4 ·
Graduate How Do You Derive 4-Acceleration from 4-Velocity?
- JabberWalkie
- · Replies 1 ·
Graduate Infinite Curvature: Understanding Black Holes
- pibomb
- · Replies 3 ·
Graduate Is it True: "An Object Cannot Travel Faster Than c"?
- actionintegral
- · Replies 19 ·
Graduate Why is 4-momentum usually given as a covector?
- masudr
- · Replies 15 ·
Graduate Poisson brackets in general relativity
- shoehorn
- · Replies 1 ·
Undergrad Energy-mass equivalence - E=mc^2
- heliocentricprose
- · Replies 15 ·
Graduate Question regarding acceleration in spacetime
- Bos
- · Replies 9 ·
Graduate Can Events in Relativity Be Observed Simultaneously from Different Frames?
- P3X-018
- · Replies 12 ·
Graduate Worldlines - no need for ref frames?
- pivoxa15
- · Replies 4 ·
Graduate Gravity's Effect on Light: Spacetime Curvature Facts
- QuantumKing
- · Replies 16 ·
Graduate The true nature of length contraction
- denni89627
- · Replies 18 ·
Graduate The principle of the constancy of the velocity of light
- myoho.renge.kyo
- · Replies 18 ·
Graduate Unraveling the Mysteries of Faster-Than-Light Travel in Physics
- Skhandelwal
- · Replies 67 ·
Graduate Light-speed is infinite, in a certain way?
- Ookke
- · Replies 16 ·
Graduate Why are there two delta x^u/v in equation (1.16) on page 9 of Carroll's GR book?
- OS Richert
- · Replies 13 ·
Graduate Velocity v & c^2: Simultaneous Events
- actionintegral
- · Replies 11 ·
Graduate Mutual effects of gravity and velocity on time
- Dmstifik8ion
- · Replies 3 ·
Graduate Why can we not see the future?
- aberrated
- · Replies 27 ·
Graduate Do Observers at Rest See Time Dilation When Others Stop Instantaneously?
- actionintegral
- · Replies 5 ·
Graduate What Evidence Supports the Existence of an Intrinsic Magnetic Moment?
- Epsilon Pi
- · Replies 13 ·
Graduate A relativity problem (train & platform)
- Ookke
- · Replies 32 ·
Graduate Light's Mass: 0 N = Infinite Acceleration?
- unscientific
- · Replies 8 ·
Graduate Understanding Ricci and K Curvature in 2 Dimensions: A Simple Explanation
- stephen_weber
- · Replies 3 ·
Undergrad Assume I travel near c from a planet 5 light years away
- Altair
- · Replies 2 ·
Graduate Would a Universe-Mass Black Hole Trigger a Big Bang?
- bananan
- · Replies 1 ·
Graduate Charged particle in a magnetic field
- Emanresu
- · Replies 26 ·
Undergrad Gravitational Wave: Does Vibrating Mass Emit Waves?
- Ahmed Abdullah
- · Replies 5 ·
Graduate Weak and strong equivalence principles
- lalbatros
- · Replies 1 ·