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
Gravity probe launching countdown
- TeV
- · Replies 2 ·
Undergrad Doesn't light's constant speed dictate an 'ether'?
- billy_boy_999
- · Replies 105 ·
Graduate Doppler & Absorption: Effects on Light Wavelengths
- Point_Particle
- · Replies 18 ·
Graduate Time Dilation different depending on cause?
- Swiss Army
- · Replies 2 ·
Graduate Quantum gravity and planck scales.
- wolram
- · Replies 7 ·
Graduate Relativistic equations, how does one isolate variables?
- Matt Jacques
- · Replies 2 ·
Graduate The Expansion Tendency of the Universe According to GR
- Mike2
- · Replies 29 ·
Graduate This relativistic kinetic energy equation makes no sense to me
- JJ
- · Replies 5 ·
Graduate Traveling Back in Time: Breaking Einstein's 4 Dimensions
- The_Nebula
- · Replies 21 ·
Graduate What is the Double Special Relativity theory?
- Imparcticle
- · Replies 2 ·
High School Why the symbol c was chosen to represent the speed of light
- Chen
- · Replies 2 ·
Graduate Testing General Relativity, and perhaps Quantum Gravity
- Kalimaa23
- · Replies 9 ·
Graduate Has light wavelength compression been proven?
- billy_boy_999
- · Replies 5 ·
Graduate Graviton Questions: How Do Gravitons Pass Through Objects?
- fbsthreads
- · Replies 3 ·
Undergrad The Pugilistic Albert - Round 1
- OneEye
- · Replies 4 ·
Graduate What happens to mass at the speed of light
- Cypher
- · Replies 16 ·
Graduate Applying the lorentz transformation
- cephas
- · Replies 7 ·
Graduate Does mass truly increase with energy according to special relativity?
- Swiss Army
- · Replies 6 ·
Graduate Can Mach's Principle Be Tested with a Gyroscope in the Void of Space?
- Nacho
- · Replies 8 ·
Graduate The Peripatetic Albert - Warmup Lap
- OneEye
- · Replies 2 ·
Undergrad What Are the Best Resources for Understanding Einstein's Relativity?
- OneEye
- · Replies 2 ·
Undergrad How can mass equation rely on 'rest mass'?
- billy_boy_999
- · Replies 6 ·
Undergrad Relativistic Mass Propulsion or the RMP
- Sariaht
- · Replies 8 ·
Graduate Can Twins Age Differently in Space Without Acceleration?
- tribdog
- · Replies 10 ·
Graduate Is Space Truly Three Dimensional?
- StarThrower
- · Replies 9 ·
High School Why does the Earth move around the sun?
- deda
- · Replies 8 ·
High School What is FOR ? doppler shift?
- Imparcticle
- · Replies 2 ·
Undergrad Traveling at Light Speed: Our Earth's Movement Through Time
- Imparcticle
- · Replies 5 ·
Graduate How Does Gravity Affect Space and Time Near Black Holes?
- Mike2
- · Replies 8 ·
Graduate The Fundamental Postulate Of Special Relativity Is Self-Contradictory
- StarThrower
- · Replies 156 ·
Undergrad Satellite to test Einstein's predictions
- Grizzlycomet
- · Replies 2 ·
Graduate Mass Change in Objects: Investigating the Effects
- alchemist
- · Replies 10 ·
Graduate Quick question on where to apply time dilation.
- JJ
- · Replies 10 ·
Satellite to test Einstein predictions
- BookWorm
- · Replies 4 ·
Graduate General Relativity and relationism
- hellfire
- · Replies 3 ·
Undergrad Light in the wake of huge objects
- gibbiextreme
- · Replies 2 ·
High School Laymen’s view of what general relativity is?
- JonF
- · Replies 5 ·
What Unique Perspectives on Mathematics Does the UCR Math Website Offer?
- wolram
- · Replies 2 ·
Graduate Can Gravity Enable Instantaneous Communication Faster Than Light?
- cripkd
- · Replies 9 ·
Graduate How does the uncertainty principle affect the behavior of photons?
- billy_boy_999
- · Replies 8 ·
Graduate Is The Theory Of Special Relativity Wrong?
- StarThrower
- · Replies 18 ·
Graduate Can we really travel back in time using a wormhole?
- Imparcticle
- · Replies 4 ·
Graduate Going Faster Than Light: Can It Be Achieved?
- The_Nebula
- · Replies 8 ·
Graduate Stephen Hawking Grand Unified Theory
- Omni
- · Replies 2 ·
Graduate What is the significance of a 4-vector's magnitude being c?
- Severian596
- · Replies 10 ·
Graduate SuperDuper Problem In The Time Dilation Formula Revealed
- StarThrower
- · Replies 2 ·
Graduate Amazing new experiment proposed
- Brad_Ad23
- · Replies 6 ·
Graduate Check Spacetime Diagram for Scenario w/v=3/4c & \gamma=1.5
- Severian596
- · Replies 8 ·
Graduate Relative Time Notation: Observer's POV & Objectivity
- psiclone
- · Replies 6 ·
Graduate Understanding Einstein's Theory: The Role of Spacetime in Motion
- Dorje
- · Replies 7 ·
Is There a Correlation Between Cognitive and Artistic Talent in Great Minds?
- wisp
- · Replies 30 ·
Graduate Which bomb explodes first, and why?
- speeding electron
- · Replies 12 ·
High School How do physicists use differential equations to describe the world?
- aychamo
- · Replies 4 ·
Undergrad Why is c even in the equation?
- donkeyhide
- · Replies 4 ·
Graduate How are gravitational radiation and electromagnetic radiation related?
- billy_boy_999
- · Replies 1 ·
Undergrad Centrifugal Force: Facts & Equations
- aychamo
- · Replies 4 ·
Graduate Einstein & Gravity: Explained by HallsofIvy
- aychamo
- · Replies 2 ·
Graduate Relative antiparallel photons generate Q. M.?
- Loren Booda
- · Replies 7 ·
Graduate What Happens to a Donut Spinning at Near-Light Speeds?
- Namloh2000
- · Replies 8 ·
Graduate Geodetic and Frame-Dragging Effects on Gyroscope Axis of Rotation
- powerball
- · Replies 2 ·
Graduate Who give me some references to Kaluza-Klain's theoy in 5D?
- galaphy
- · Replies 2 ·
Graduate Simulteneity and other myths, maybe?
- mhernan
- · Replies 3 ·
Graduate What is the relationship between energy and the curvature of spacetime?
- 424319
- · Replies 1 ·
Undergrad What exactly are Lorentz transformations?
- aychamo
- · Replies 8 ·
Graduate Definition of relativity's interval
- Severian596
- · Replies 10 ·
Graduate Non-symmetric gravitational theory (NGT)
- yanniru
- · Replies 5 ·
Graduate Exact solutions of Einstein's field equations
- Loren Booda
- · Replies 6 ·
Undergrad Can Gravity and Acceleration Ever Equal the Speed of Light?
- JonMcD
- · Replies 4 ·
Graduate Laws in freely falling elevator
- beacon
- · Replies 6 ·
Graduate Where should I start to learn about relativity?
- nabby1
- · Replies 13 ·
Graduate Einstein's Space-Time Continuum: Is Time a 4th Dimension?
- cripkd
- · Replies 7 ·
Undergrad Q: Questions About Stephen Hawking, Einstein & Gravity
- aychamo
- · Replies 2 ·
Time Travel - Possibility and Speculation
- elibol
- · Replies 77 ·
Graduate Are there different concepts of time travel and how do they work?
- Odaiba
- · Replies 3 ·
Graduate UNIFIED PHYSICS BEYOND GENERAL RELATIVITY by Peter Rodgers
- peterrodgers
- · Replies 5 ·
Graduate Major Breakthrough in Theory of Relativity
- marcos
- · Replies 3 ·
Undergrad Lenght contraction experiments.
- Peterdevis
- · Replies 16 ·
Graduate About rotating reference system
- galaphy
- · Replies 16 ·
Undergrad If there is no Ether how can we talk about light being a wave?
- protonman
- · Replies 132 ·
Undergrad Speed of light-can this be correct?
- rtharbaugh1
- · Replies 5 ·
Graduate How do special and general relativity become theories?
- aychamo
- · Replies 4 ·
Graduate I can't get it through my head
- havechanged
- · Replies 5 ·
Graduate Can you speak English for a lowly S/W Dev?
- treat2
- · Replies 37 ·
Graduate Unanswered Questions Surrounding Time Travel Possibilities
- aychamo
- · Replies 3 ·
Graduate Is the speed of light truly a universal constant?
- protonman
- · Replies 6 ·
High School What is the Universal Gravitational Constant?
- Ian
- · Replies 10 ·
Undergrad The Mystery of Light: FTL Travel
- theurinal
- · Replies 49 ·
Undergrad Time & Speed: Questions from a Non-Physics Student
- mikesvenson
- · Replies 15 ·
Undergrad Explore Ideas: Learning & Discussing Space Probes & Gravity
- juan avellaneda
- · Replies 2 ·
Graduate Can we measure absolute velocity?
- Ian
- · Replies 10 ·
Undergrad Does the speed of light affect the aberration of starlight?
- O Great One
- · Replies 51 ·
Graduate Is the Robertson-Walker Metric Key to Understanding the Expanding Universe?
- DW
- · Replies 27 ·
Graduate What is the connection between time dilation and gravity?
- the_truth
- · Replies 4 ·
Graduate Time Dilation Formula: Calculating Rel Speed Diff b/w Objects
- mikesvenson
- · Replies 47 ·
Graduate What is space-time made out of ?
- scott
- · Replies 34 ·
Graduate Time dilation relationship between gravity and velocity.
- the_truth
- · Replies 15 ·
Graduate One way Speed of Light measured by a Single Clock
- Vadim Matveev
- · Replies 8 ·
Graduate Schwarzschild Metric Question again
- franznietzsche
- · Replies 2 ·
Graduate Is the Cosmological Constant Problem Indicative of Unknown Aspects of Gravity?
- wolram
- · Replies 4 ·
Graduate Simple Problem: Pulling a Bar 1 Light-Day Long in Empty Space
- jbmjbm
- · Replies 4 ·