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 Superluminal transfer of information via gravity
- crapola77
- · Replies 6 ·
Graduate Electric is Magnetic - Relativistically speaking
- DavidFi
- · Replies 10 ·
Graduate Lorentz Generators, Srednicki eq. 2.13
- malawi_glenn
- · Replies 2 ·
Graduate Black Hole Horizon Information
- Naty1
- · Replies 6 ·
Graduate Crossing event horizon and Hawking radiation
- John.G.Cleary
- · Replies 2 ·
Graduate Object Blueshift: Where Do Extra Vibrations Come From?
- keepitmoving
- · Replies 10 ·
Undergrad Question about the effect of c on light
- crapola77
- · Replies 11 ·
Graduate Superluminal velocities & redshift
- nutgeb
- · Replies 15 ·
Graduate SR and classical Doppler shift
- nutgeb
- · Replies 35 ·
Undergrad Relativity & Gravity: Questions for a 16-Year-Old
- ledzeppie
- · Replies 9 ·
Graduate Time Dilation, who is aging slower?
- ajward
- · Replies 10 ·
Graduate Local Inertial Frame: Understanding Riemann Curvature & Metric Tensor
- Neitrino
- · Replies 8 ·
Undergrad Understanding Gravitational Potential in Different Reference Frames
- itwillend
- · Replies 19 ·
Graduate The Truth About Time Travel: Separating Fact from Fiction
- ledzeppie
- · Replies 1 ·
Graduate Unifying Gravity & GR: A Contradiction in Physics?
- earamsey
- · Replies 24 ·
Graduate Relativistic Mass Increase and Its Dependence on Relative Speed
- keepitmoving
- · Replies 20 ·
Graduate Does time speed up as space expands
- T.O.E Dream
- · Replies 15 ·
Graduate Speed increases mass, which increases gravity?
- ledzeppie
- · Replies 3 ·
Graduate The visible universe and the speed of light
- silentpundit
- · Replies 1 ·
Undergrad Earths rotation and special relativity
- git67
- · Replies 7 ·
Graduate Problem with Rubber and Metal Ball Analogy
- jdeboi
- · Replies 3 ·
Graduate Relativity Theory and Quantum Theory
- Gear300
- · Replies 7 ·
Graduate What are the implication of Einstein's definition of space time?
- ArielGenesis
- · Replies 8 ·
Graduate Simultaneity, does it confuse causality?
- Brin
- · Replies 10 ·
Graduate Two Spaceships & Light: Measuring Speed from Earth
- keepitmoving
- · Replies 1 ·
High School Does gravity pull towards a point behind an object or its center of gravity?
- Chatt
- · Replies 19 ·
Undergrad Is Time Influenced by Mass and Matter?
- Timmaay322
- · Replies 39 ·
Graduate What is Feynman's excess radius for a black hole?
- heinz
- · Replies 2 ·
Graduate Gravitons & Warping: Reconciling Extra Dimensions?
- keepitmoving
- · Replies 5 ·
Why did Einstein win the Nobel Prize for the photoelectric effect instead of relativity?
- Stratosphere
- · Replies 4 ·
Graduate Is there an analytical explanation for Einstein's famous equation E=mc^2?
- Urmi Roy
- · Replies 7 ·
Graduate Can Gama Rays Escape a Black Hole?
- Tompuckett
- · Replies 4 ·
Graduate White Holes: Explaining How They Violate the 2nd Law of Thermodynamics
- Petkovsky
- · Replies 1 ·
Graduate Lorentz transformations derived using dimensional analysis?
- jason12345
- · Replies 3 ·
Graduate Why use time dilation and length contraction together in relativity?
- neopolitan
- · Replies 444 ·
Graduate Time dilation effects on spinning object
- awcrowe
- · Replies 1 ·
Graduate My Theory of Gravity: Mass Causes Time Dilation & Attraction
- Boeley
- · Replies 1 ·
Graduate Horizon for Constant Acceleration - Special Relativity
- heinz
- · Replies 3 ·
Graduate Confused about Equivalence Principle
- skippy1729
- · Replies 17 ·
Graduate Are Time-Traveling Photons a Real Scientific Concept?
- gonegahgah
- · Replies 13 ·
Graduate Behavior of a tangent light beam to an event horizon?
- SW VandeCarr
- · Replies 5 ·
Graduate Electromagnetic version of the positive energy theorem?
- schieghoven
- · Replies 1 ·
Graduate Derivation of Wormhole Mouth Mass/Charge?
- Julian M
- · Replies 18 ·
Graduate Speedy ship flies through the sun
- Buckethead
- · Replies 13 ·
Graduate Conceptual GR question (regarding orbit paths)
- Matterwave
- · Replies 5 ·
Undergrad Special Relativity Time Travel to Future - Could You Watch the News on Earth?
- edgepflow
- · Replies 2 ·
High School Gravity reaches across space and apparently reaches across time.
- keepitmoving
- · Replies 9 ·
Graduate Mass warping time, question/ interpretation
- kmv
- · Replies 6 ·
Graduate Can Artificial Gravitational Fields Create Wormholes for Space Travel?
- The_Absolute
- · Replies 4 ·
Graduate The trivial constant force acceleration math
- valjok
- · Replies 3 ·
Undergrad Explaining E=M C^2 to 14 year olds ?
- AlisonArulia
- · Replies 22 ·
Graduate Understanding Penrose Diagrams - Insight & Explanation
- benk99nenm312
- · Replies 1 ·
Undergrad Why does light travel at the same speed in moving reference frames?
- Beetroot
- · Replies 12 ·
Graduate [help]how to obtain gravity eqution from gravity field Action S?
- zhushualbert
- · Replies 3 ·
Graduate Twin Paradox (I know not again)
- Libohove90
- · Replies 2 ·
Graduate What Happens to Light When a Flashlight Hits an Asteroid?
- keepitmoving
- · Replies 5 ·
Graduate The doppler radar trap paradox on the path to gravity.
- andrewr
- · Replies 108 ·
Graduate Does an observer on a carousel see a horizon?
- heinz
- · Replies 4 ·
Graduate Are Scientific Equations Only Valid for Certain Scales in Physics?
- putongren
- · Replies 1 ·
Undergrad A thing that confuses me (quasi-paradox)
- The_AC
- · Replies 8 ·
Graduate Significance of Special Relativity
- Oscar Wilde
- · Replies 6 ·
Graduate How Does Earth's Curvature Affect the Ratio of Gravity?
- Kingarthur
- · Replies 2 ·
Undergrad What causes the gravitational redshift phenomenon?
- eVulcanon
- · Replies 5 ·
Graduate Gravity: Time Dilation or Death
- Good4you
- · Replies 2 ·
Graduate What Makes the Speed of Light Constant in Special Relativity?
- Saw
- · Replies 15 ·
Graduate Is General Relativity Based on General Relativity or Equivalence?
- eVulcanon
- · Replies 4 ·
Undergrad From Kepler's law to gravitation force
- Mesmerized
- · Replies 7 ·
Graduate Understanding SR: A Travelling Observer & Photons
- EV33
- · Replies 2 ·
Undergrad Time as Dimension: Before & After Einstein's G.T.R.
- karkas
- · Replies 3 ·
Graduate Compact Sapcetime and Time Travel
- thehangedman
- · Replies 5 ·
Graduate Are Time and Space Independent of Objects?
- Gear300
- · Replies 13 ·
Graduate Is Gravity Truly a 3D Phenomenon?
- Tommahawk
- · Replies 1 ·
Graduate How Do FRW Coordinates Transform SR Effects in Cosmology?
- nutgeb
- · Replies 56 ·
Undergrad Gravitational Time Dilation - Confused
- valdar
- · Replies 42 ·
Undergrad Sun Bending Light: Gravity Warps Space-Time?
- michael879
- · Replies 53 ·
Graduate Verify special relativity by concept light clock
- Mark1991
- · Replies 18 ·
Graduate Is speed of time c, atleast for someone travelling at speed of light?
- aaryan0077
- · Replies 3 ·
Graduate Can We Really Travel Back to Our Own Past?
- aaryan0077
- · Replies 1 ·
Graduate Lorentz Transformation & Hyperbolic Angle in (2+1) Dimensions
- touqra
- · Replies 7 ·
Graduate The Twin Paradox and Absolute Reference Frames in General Relativity
- CJames
- · Replies 5 ·
Graduate What Are the Paradoxes of Special Theory of Relativity?
- neurobio
- · Replies 7 ·
Graduate Kerr metric, singularities in Boyer-Lindquist and Cartesian coordinates
- redmosquito
- · Replies 1 ·
Undergrad Why Do We Use Arbitrary Units for the Speed of Light?
- stimulus101
- · Replies 10 ·
Graduate Principle of Relativity and Constancy of Light
- Gear300
- · Replies 24 ·
Graduate The Mystery: The Truth about Time Shifts in Wormholes
- Jackson Tan
- · Replies 6 ·
Graduate A little paradox in relativity.
- rpj
- · Replies 24 ·
Graduate Length contraction: a question about tramwheels
- Rasalhague
- · Replies 3 ·
High School Is the speed of light a velocity or acceleration?
- ryuunoseika
- · Replies 18 ·
Graduate Why is faster than light travel so bizarrely 'addressed'
- Roo
- · Replies 47 ·
Graduate Magnetic Relativity: Does a Force Act?
- tickle_monste
- · Replies 7 ·
Graduate Why Does the Twin Paradox Not Prove Einstein's Relativity Wrong?
- nuclear420
- · Replies 3 ·
Graduate What exactly is meant when people say that a Light Cone is tilting ?
- Benjamin113
- · Replies 6 ·
Graduate What is the Relationship Between Proper Time and Coordinate Time in Black Holes?
- rjbeery
- · Replies 103 ·
Graduate Is there time at the speed of light?
- Gothican
- · Replies 17 ·
Undergrad Gravitational Force between two bodies when Distance is zero
- nvijayprakash
- · Replies 9 ·
Graduate The Relativity of Simultaneity
- Gear300
- · Replies 22 ·
Graduate Kretschmann Scalar: Flat Spacetime & Singularities
- Cusp
- · Replies 3 ·
Graduate What Are the Limitations of the Balloon Analogy in Cosmology?
- thehangedman
- · Replies 4 ·
Graduate Twistors but I don't think his projection created a compacted space
- thehangedman
- · Replies 4 ·
Graduate Electromagnetic General Relativity
- The_Duck
- · Replies 18 ·