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 What is the optimal speed for interstellar travel?
- supernova83
- · Replies 16 ·
Graduate What Are Your Thoughts on Dual Meanings in Physics Terminology?
- pmb_phy
- · Replies 11 ·
Undergrad Light Barrier: Breaking the Speed of Light?
- waznboyd
- · Replies 3 ·
Graduate Is K in Bondi K Calculus Constant Due to Homogeneity and Isotropy of Spacetime?
- JUboy
- · Replies 1 ·
Graduate Mass of Photon: Is 0 Rest Mass Possible?
- row
- · Replies 44 ·
Graduate Why Do Velocity & Momentum Equations Need Revision?
- blumfeld0
- · Replies 6 ·
Graduate Non-Rotating Charged Black Holes: Mass, Electric Field, & Quantum Charges
- JustinLevy
- · Replies 2 ·
Graduate Why is there a k in Bondi k calculus?
- JUboy
- · Replies 17 ·
Graduate Can Photons from a Laser Distort Space-Time Like Massive Objects?
- Teleros
- · Replies 4 ·
Undergrad Time Travel Questions: Does Age Change with Speed?
- UglyEd
- · Replies 22 ·
Graduate How Do Killing Vectors Affect Geodesic Deviation?
- Nikos
- · Replies 4 ·
Graduate When the photon is born on the horizon .bang?
- Giulio B.
- · Replies 2 ·
Graduate Energy, momentum, & mass of a box of moving particles
- pervect
- · Replies 7 ·
Graduate What Is the Orbital Period for Circular Orbits Around Black Holes?
- pervect
- · Replies 7 ·
Undergrad Potential energy contributes to the mass
- bernhard.rothenstein
- · Replies 5 ·
Graduate Time an Illusion? Einstein Explains Why According to Relativity
- Ratzinger
- · Replies 17 ·
High School What is the exact definition of mass?
- mubashirmansoor
- · Replies 9 ·
Graduate Here's the way to go faster than light
- Giulio B.
- · Replies 7 ·
Undergrad Reaching the Speed of Light: Can We Achieve C?
- shaviprem
- · Replies 12 ·
Graduate Understand Mach's Principle: What does it Mean?
- gulsen
- · Replies 31 ·
Graduate Understanding Gravitational Waves & Self-Taught GR
- John_Doe
- · Replies 9 ·
Graduate Can We Really Time Travel by Exceeding the Speed of Light?
- darignac
- · Replies 2 ·
Graduate Lightspeed: does the definition of time make it constant?
- JUboy
- · Replies 3 ·
Graduate How to show something transforms as a covector?
- Baggio
- · Replies 4 ·
Graduate Photon Mass: Is Student Learning Misleading?
- bernhard.rothenstein
- · Replies 49 ·
Check Out This Link - A Puzzling Argument
- LnGrrrR
- · Replies 13 ·
High School Why is light's speed the fastest speed?
- Crusty
- · Replies 10 ·
Graduate Man Running on a Train: Clocks and Velocity
- yogi
- · Replies 24 ·
Graduate Is Lorentz Contraction Real in the Frame of Reference of a Moving Object?
- GiTS
- · Replies 11 ·
Graduate About the geometry of general relativity
- Philippe
- · Replies 7 ·
Undergrad Uncovering the Mystery: Slowing Time on a Plane Explained
- kuahji
- · Replies 8 ·
Graduate Can objects catch up with their own photons?
- eweast
- · Replies 7 ·
Graduate Anisotropy of the speed of light?
- Garth
- · Replies 12 ·
Graduate Curved Space Model: Explaining Gravity & Magnetic Force
- -Job-
- · Replies 7 ·
Undergrad C vs. Fiber Optics: Speed Comparison and Myths Debunked
- Glenn
- · Replies 15 ·
Graduate How can magnetic field be a relativistic phenomenon?
- Abu Abdallah
- · Replies 8 ·
Graduate Slowing Photons: A Look at Light Speed Rockets & Measuring Slower Speeds
- CBR600RR
- · Replies 1 ·
Graduate Two speed of light experiments at different altitudes
- kmarinas86
- · Replies 10 ·
Graduate Final Theory and Orbital Mechanics
- Simran737
- · Replies 13 ·
Undergrad Do Photons Have Mass and Kinetic Energy?
- mubashirmansoor
- · Replies 10 ·
Graduate What will happen to time if we travel away from Earth at 0.9999c?
- catalyst55
- · Replies 31 ·
Graduate Can two galaxies receded from one another faster than C?
- Chaos' lil bro Order
- · Replies 35 ·
Graduate Consistency of the speed of light
- Moneer81
- · Replies 431 ·
Graduate How Quickly Does Gravity Propagate?
- JerryCic
- · Replies 3 ·
Graduate Palatini Formalism generalizes GR to include degenerate metric?
- kakarukeys
- · Replies 4 ·
Graduate Gravitational Equivalent of Magnetic Field Measured in Lab
- wolram
- · Replies 20 ·
Undergrad How does a body escape its gravitational field?
- -Job-
- · Replies 8 ·
Graduate Relative Speeds and the Limit of Light
- nu_paradigm
- · Replies 2 ·
Graduate Derieving relativistic electrodynamics equations
- gulsen
- · Replies 17 ·
Graduate Can Muon Decay Experiments Disprove the Existence of an Absolute Time Frame?
- Nereid
- · Replies 2 ·
Graduate Is Relativity an Illusion or Reality?
- virtual_inside
- · Replies 7 ·
Graduate What is the Flaw of General Relativity Regarding Uniform Gravitational Fields?
- Zanket
- · Replies 85 ·
Graduate Teaching Special Relativity: Balancing Theory, History, and Experimentation
- bernhard.rothenstein
- · Replies 29 ·
Graduate Velocity of Light in Accelerating Spaceship & Inertial Frames in GR
- Ratzinger
- · Replies 5 ·
Graduate Gravity & Geodesics: How the Earth Maximizes Proper Time
- Thrice
- · Replies 17 ·
Undergrad The Science Behind Time Dilation: How Does Time Stop at the Speed of Light?
- physicscrap
- · Replies 87 ·
Graduate Could the expansion of space impact the distance between the Earth and the sun?
- AcidRainLiTE
- · Replies 4 ·
Undergrad Discover the Method to Derive E=mc^2 - A Comprehensive Guide
- Milind_shyani
- · Replies 2 ·
Graduate Geodesics in schwarzschild solution
- Pietjuh
- · Replies 2 ·
Graduate Gravitational Field of a Spinning Mass: Exploring the Math
- John_Doe
- · Replies 1 ·
Graduate Perspective of Massless objects
- LnGrrrR
- · Replies 9 ·
Graduate Weight of Hot Body: Balance in Thermal Equilibrium?
- bernhard.rothenstein
- · Replies 1 ·
Undergrad What about this Final Theory thing?
- Simran737
- · Replies 1 ·
High School Time Is Relative: What Does It Mean?
- Helicobacter
- · Replies 1 ·
Graduate Topology of de Sitter and black hole
- touqra
- · Replies 1 ·
Graduate GR & 3rd Law: A Thought Experiment
- my_wan
- · Replies 2 ·
Graduate Aetherists and the doppler effect
- bernhard.rothenstein
- · Replies 13 ·
Graduate Does Space Expand Faster Than Light Beyond Our Observable Universe?
- Chaos' lil bro Order
- · Replies 1 ·
Undergrad Questions about the speed of light
- ADHDandSubtract
- · Replies 13 ·
Graduate Special Relativity and Thermal Physics finals
- franznietzsche
- · Replies 31 ·
Graduate Time difference: light emitted vs observed
- richardbroadstone
- · Replies 7 ·
Graduate Can Space Travel Faster Than the Speed of Light?
- Chaos' lil bro Order
- · Replies 13 ·
Graduate Time and Space dilation and contraction
- scott_alexsk
- · Replies 2 ·
Graduate Question about cause of curvature of spacetime
- Mk
- · Replies 14 ·
Graduate Charge Dilation: Mass/Energy Increase, Charge Constant
- gulsen
- · Replies 4 ·
Graduate Curved spacetime is described by a manifold
- pensano
- · Replies 9 ·
Graduate Questions on Spacetime Curve/Gravity
- Equation
- · Replies 1 ·
Undergrad Lorentz- and Galileian-transformation
- Eivind
- · Replies 9 ·
Graduate Do Antitachyons Travel Slower Than Light?
- skywolf
- · Replies 2 ·
Graduate Bending of Light around a Star
- kmarinas86
- · Replies 1 ·
Graduate Photon passing through a black hole?
- Graviman
- · Replies 24 ·
Graduate Why is the Angle Between Timelike Vectors Given by g(X,Y)?
- Oxymoron
- · Replies 17 ·
Graduate Searching for "Perihelium Precession Problem" Derivation in General Relativity
- dextercioby
- · Replies 10 ·
Graduate Potential energy and GR, something doesn't add up
- tbitz
- · Replies 6 ·
Graduate If SR Wrong: Difficulties, Paradoxes, Instantaneous Signals
- Ratzinger
- · Replies 10 ·
Jerry Noble and His Theory: Unveiling a Mystery
- cmee002
- · Replies 2 ·
Graduate Circular Twin Paradox: Non-Linear Acceleration and Age Differences Explained
- ubavontuba
- · Replies 9 ·
Graduate Why is light traveling through the ether not just at speed c?
- RooftopDuvet
- · Replies 4 ·
Graduate Detecting Space Time: Gravitational Radiation
- wolram
- · Replies 5 ·
Undergrad Einstein's E=mc^2: How Did He Reach His Equation?
- WARGREYMONKKTL
- · Replies 17 ·
Graduate Lorentz transform as a complex function
- quaternion
- · Replies 6 ·
Graduate Highschool student interested in cosmology
- heliocentricprose
- · Replies 9 ·
Graduate What Are the Energy and Wavelength Limitations of Light?
- ubavontuba
- · Replies 4 ·
Graduate Space-Time Geometry: Consequences of Minkowski's Relativity
- bernhard.rothenstein
- · Replies 6 ·
Undergrad Black Hole: Seeing Inside & Out
- RAD4921
- · Replies 4 ·
Graduate Why Is the Position 4-Vector Contravariant While the Del Operator Is Covariant?
- Oxymoron
- · Replies 13 ·
Graduate How does Einstein's theory explain gravity's effect on Earth's curvature?
- varsha
- · Replies 4 ·
Graduate How Does Weak Coupling Between Matter and Space-Time Affect Cosmic Structures?
- wolram
- · Replies 5 ·
Graduate Is the speed of light measurement dependent on local clocks?
- kmarinas86
- · Replies 4 ·
Graduate Antigravity like soluctions of Einstein equations
- Sauron
- · Replies 3 ·