Special and General Relativity Forum

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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.
Graduate Why Does Einstein's Theory Predict an Odd Number of Gravitational Lens Images?
  • Glenn
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Graduate What is the mechanism for expansion
  • wolram
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Graduate Discover the Controversial Gravitational Blueshift Phenomenon
  • Sammywu
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Graduate What are the latest developments in quantum gravity?
  • wolram
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Graduate Is Lorentz symmetry violation possible for electrons and photons?
  • wolram
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Graduate Is Self Creation Cosmology the Key to Solving Cosmological Mysteries?
  • wolram
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Undergrad Solving Time Dilation Question from Simply Einstein
  • Be Happy!
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Graduate Unveiling Einstein's Genius: The Secrets Behind His Groundbreaking Formulas
  • aychamo
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Graduate New Lineweaver paper/Superluminal expansion speeds
  • marcus
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Graduate What is Stephen Hawking's No Boundary Proposal and its significance?
  • Vast
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Graduate What is the force propelling us through time?
  • Binary Star
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Undergrad Question about Special Relativity
  • grounded
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Graduate Special Relativity in a Periodic Universe
  • beardless2
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Graduate Timelike geodesics might not be maxima of the proper time
  • Sammywu
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Graduate Is Time Travel Truly Possible or Just a Fantasy?
  • Gil Fuller
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Undergrad Is Time a Proven Fact or Still Just a Theory?
  • Scott Kinzie
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Graduate SR and the earth, sun, and galaxy.
  • aychamo
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Graduate Equation that predicts the increasing values of mass
  • 8LPF16
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Undergrad What are the implications of time being relative?
  • mikesvenson
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Graduate GammaRayBursts as standard candles to judge dark energy
  • marcus
  • · Replies 18 ·
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Graduate Does Relativistic Mass Affect Gravitational Force in SR? | SR & GR Comparison
  • AWolf
  • · Replies 12 ·
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Graduate Arguments of lawyer against relativity
  • MathematicalPhysicist
  • · Replies 12 ·
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Graduate What happens to the car in the Relativistic Car Paradox?
  • Strange Quark
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Graduate Gravity caused by curved space - am I right?
  • Vosh
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Graduate Bending Light: Gravity, Invisibility and Orbit
  • godspeed
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Graduate What is Einstein's Box in Physics?
  • Arcon
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Graduate Light Clock Thought Experiment: Parallel Moving Mirrors
  • yogi
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Graduate Questions About General Theory of Relativity
  • Link
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Graduate Relativistic Mass as Gravitational Charge
  • Arcon
  • · Replies 7 ·
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Undergrad Expanding people in an expanding universe?
  • vera
  • · Replies 36 ·
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Graduate What is the Mass Tensor in Relativity?
  • Arcon
  • · Replies 23 ·
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Graduate Magnetic distortion of spacetime
  • wolram
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Graduate I'm sure this has been asked a million times but,
  • Deeviant
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Undergrad Einstein's Modified Newton's Equation of Motion
  • wiiz
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Graduate Is FTL Travel Possible with a Mini Cooper in an Alternate Space Network?
  • jgravatt
  • · Replies 33 ·
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Graduate Multiple Universe: Could Black Holes Create New Universes?
  • binaryblade
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Undergrad What if the speed of light was slower?
  • TheDonk
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Graduate Is Gravity a Substance or a Wave?
  • Thallium
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Graduate Stars closer than thought. How the sun affects the light path
  • luiscar
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Graduate Energy, Mass and Expansion of Universe
  • Hyperreality
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Graduate Redshift Jumps: New Evidence of Quantization?
  • wolram
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Graduate Does Simultaneity Truly Exist in the Universe?
  • Antonio Lao
  • · Replies 32 ·
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Graduate Are Tachyons Just a Science Fiction Dream?
  • wolram
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Undergrad I admit, I only had wrong impression
  • deda
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Undergrad Gravity and the Speed of Gravitational Influence
  • jgravatt
  • · Replies 12 ·
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Graduate Is the Speed of Light Really Absolute?: An Amateur Astronomer's Musings
  • meddyn
  • · Replies 23 ·
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Undergrad What Is Relativistic Kinematics?
  • Brain
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Graduate Two Kinds of Time: Length Contraction and Time Dilation
  • Sikz
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Graduate What Are the Two Types of Time in Relation to Gravity?
  • Sikz
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Graduate What Insights Can We Gain from Gravitational Redshift Theories?
  • Owen
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Graduate Is Fine Structure Invariant Over Cosmological Time Scales?
  • wolram
  • · Replies 13 ·
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Graduate Increasing expantional speed of the universe
  • Deeviant
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Graduate E=MC2: quantum or relativistic effect?
  • arivero
  • · Replies 6 ·
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Graduate Gauge Groups, Riemann Tensors & Conformal Invariance in GR & QG
  • alexh110
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Graduate [tex]E = -\nabla \Phi - \displaystyle{\frac{\partial A}{\partial t}}[/tex]
  • Arcon
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Graduate Is Linear Momentum Conserved in Relativistic Angular Acceleration?
  • carl fischbach
  • · Replies 13 ·
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Graduate How Do Black Holes Exert Gravitational Force If They Capture Gravitons?
  • poiboy
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Graduate Is Albert Einstein's Theory of General Relativity Still Valid?
  • Labguy
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Graduate The infinite improbability drive, revisited again.
  • rtharbaugh1
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Graduate Thought experiment for using Black Holes for cmmunication
  • NateTG
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Graduate How does the relativity of simultaneity work in the classic train example?
  • Jupiter
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Graduate Physically Inequivalent Quantum Theories from the Wheeler-de-Witt Equation
  • jby
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Undergrad E=MC2: does this prevent a Mass from achieving Light Speed?
  • timejim
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Graduate Time changes in gravity field.
  • Vosh
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Graduate Modern Special Relativity and Mass
  • DW
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Graduate Does the Earth's movement towards the sun affect the speed of light?
  • Vosh
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Graduate Special Relativity Contains Massive Error
  • Tempest
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Graduate 1905 Special Relativity theory Time dilation
  • David
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Graduate Question regarding explanation of impossiblity of faster then light travel speed
  • sharpstones
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Graduate What if speed of light was Faster? Would TIME travel be prohibited?
  • timejim
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Undergrad How Fast Do Mechanical Forces Travel Through Different Mediums?
  • jay
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Undergrad QM or Relativity first for self learners?
  • Tyro
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Graduate Dimensions and Degrees of Freedom
  • Jimmy
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Graduate How does SR work at speeds greater than c?
  • aychamo
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Graduate Can Light Pulse Peaks Really Travel Faster Than C?
  • wolram
  • · Replies 6 ·
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Undergrad What Happens If a Time Traveler Dies in the Past?
  • timejim
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Graduate To see there is easier than to be there
  • bothnicum
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Undergrad Can Timelines Intersect or Travel in Different Directions?
  • kawika
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Graduate About null and timelike geodesics
  • Astronomer107
  • · Replies 5 ·
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Graduate Why the notion of covariance in GR is so important
  • Kalimaa23
  • · Replies 13 ·
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Graduate Notation of General Relativity
  • Mike2
  • · Replies 5 ·
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Graduate Question about photons and relative velocity.
  • Binary Star
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Graduate Time travel into the past is logically possible
  • Ontoplankton
  • · Replies 80 ·
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Graduate How Can Time Travel Affect the Past and Future?
  • ambient
  • · Replies 24 ·
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Graduate Is the Concept of Zero Length Contraction Possible in Special Relativity?
  • deda
  • · Replies 4 ·
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Graduate Special Relativity to blow your mind
  • franznietzsche
  • · Replies 2 ·
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Graduate Three papers by Kowalski-Glikman
  • marcus
  • · Replies 10 ·
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Graduate Time Travel - what alot boll'clocks'
  • Kaspah_2k
  • · Replies 19 ·
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Graduate Exploring Paul Davies 'About Time': Questions, Thoughts, Comments
  • Tesla
  • · Replies 4 ·
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Graduate Why is the Speed of Light Constant in All Inertial Frames?
  • Kannan Kailas
  • · Replies 75 ·
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Graduate Are Recent Studies on Lorentz Violation Indicative of Quantum Gravity Effects?
  • marcus
  • · Replies 4 ·
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Graduate Speed of Light Remains Constant
  • Jeebus
  • · Replies 8 ·
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Graduate Does heating an object increase its weight?
  • MathematicalPhysicist
  • · Replies 9 ·
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Graduate Cosmic Physics: the High Energy Frontier (by Floyd Stecker)
  • marcus
  • · Replies 2 ·
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Graduate Simple proof that SR is self contradictory
  • Redfern
  • · Replies 8 ·
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Graduate Proving Relativistic Invariance of Electric and Magnetic Field Dot Product
  • Ed Quanta
  • · Replies 2 ·
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New Discoveries from Hubble Telescope Shake Theories of Time, Gravity, and Space
  • wolram
  • · Replies 19 ·
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Graduate On The Non Relativity Of Simultaneity
  • TheAtheistKing
  • · Replies 37 ·
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Graduate Maxwell's eqn in invariant form
  • mathfeel
  • · Replies 3 ·
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Graduate Frame dragging by a black hole
  • yanniru
  • · Replies 5 ·
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