Special and General Relativity Forum

Graduate How to measure the lack of external force during free fall?

Graduate Does the shape of the curve, that is produced in space by a mass, have a name ?

Graduate Time does not run slower or faster

Graduate Approximation of the FE feat. loose notation

Graduate Does constant acceleration keep working as you approach light speed?

Undergrad Do photons from a light source have a particular emission rate?

Graduate Twin Paradox: Is Time Speeding Up?

Graduate Is inertia relative or absolute?

Graduate Time Dilation: The Traveller's Perspective

Graduate What Mathematical Knowledge is Needed to Understand Einstein's Field Equations?

Graduate Speed of photons inside a very powerful gravitational wave

Graduate Simple Lorentz transformation. Are there objections

Graduate Understanding Schutz's "Invariance of the Interval"

Undergrad What Is the Linear Form of the Lorentz Transformation Equation?

Undergrad Why can't objects move at light speed and what causes relativistic effects?

Graduate Magnetic field, frames of reference

Graduate Dark Energy as a Gravitational Field?

Graduate Relativity and space travel - what's the problem?

Graduate Is time an illusion, or is it a fundamental aspect of our universe?

Graduate Can a Ferris Wheel Spin Faster Than Light?

Graduate Speed of photon B relative to photon A in a head-on collision

Graduate How Can Gravity Create a Dent in Space-Time Without Preexisting Gravity?

Undergrad Noobish question on time dilation

Graduate On the way to showing that LT is linear

Undergrad When sun is gone, gravity of light, which one faster?

Undergrad Do Photons Experience Gravitational Red Shift?

Undergrad Universe Expansion: Is There a Cycle?

Graduate Time gap between explosions in moving frame of reference

Graduate General relativity vs quantum field theory

Graduate Does the sum of the mass of two bodies vary with the distance between them ?

• Poll

Graduate Causal paradoxes - how to solve them?

Graduate Max Frequency at the Speed of Light: Clarifying a Puzzling Concept

Graduate Speed of Theoretical Wave: Constant Regardless of Frame?

Graduate Gravity ficticuous force because it's relative to mass?

Graduate Deriving Lorentz transformations from length contraction without time dilation

Graduate Photon Acceleration: From 0 to c in Zero Seconds?

Undergrad Is a 2004 Discovery About Physics Still Relevant Today?

Graduate Time Dilation and Biological Aging

Graduate Superconductors and Gravitomagnetism

Graduate Speed of Light always remains constant ? think again.

Graduate Why do the sun and earth pull on each other with equal force?

Graduate What is a Lorentz transformation and how does it relate to boost transformations?

Graduate How has the definition and scope of special relativity evolved since 1905?

Undergrad Does Pythagoras' theorem govern acceleration in relativistic bodies?

Undergrad Is Time Dilation Making You Younger or Older in Special Relativity?

Graduate Verification of the Lorentz contraction of the space

Graduate Can Uniform Relative Motion Turn a Wormhole into a Time Tunnel?

Graduate Which rule determines the direction of gravitomagnetism?

Graduate Can Energy Exist Without Mass?

Graduate What are time-like curves, space-like curves and light cones in relativity?

Graduate Why does a moving train appear longer when approaching?

Graduate How Are Gravitational Waves Produced?

Graduate Direct and inverse Lorentz transformation

Graduate 3d simulation of special relativity

Graduate Scientists claims light speed barrier broken

Graduate Stress Energy Tensor vs Energy Momentum Tensor

Graduate Questions about time dilation and whether time moves differently at high speeds

Undergrad Can we perceive time passing faster by moving toward distant light?

Graduate What is r in the gravitational time dilation formula?

Graduate Can Light Create a Time Machine?

Graduate What is Rindler's Lemma on Equal and Opposite Velocities?

Graduate Constant proper acceleration and the relativity of apparent deceleration

Graduate Coordinate speed of light vs. gravitational time dilation?

Graduate Curved space-time observed and confirmed

Graduate Surely k-calculus kT is 'mixing units'

Graduate Do Tachyons Really Exist in Physics?

Graduate Time dilation on accelerated reference frames

Graduate Speed of Light and Black holes

Graduate How Does Time Dilation Affect Perception of Speed in Relativistic Space Travel?

High School Is Light Really Bound by Gravity?

Graduate Is light actually faster than light?

Graduate Transforming to Accelerated Frames in Special Relativity

Graduate GR explanation of Newtonian Phenomena

Graduate SR predictions on an recent microwave experiement

Graduate Derivation Of Lorentz Transformation by Lawden

Undergrad When is a physical quantity time-like or space-like?

Graduate Can Future Generations Really Travel Back in Time?

Graduate Einstein Field Equation purely in partial derivatives wrt x,y,z,t?

Graduate Moment of inertia corrected with relativity

Graduate Is time perception solely influenced by time dilation?

Graduate What does a spacetime interval of zero mean for objects traveling at c?

Graduate How do we perceive curvature of time from gravity?

Graduate Pertinence of relativity of simultaneity

Graduate Artificial Black Holes, again

Graduate Researchers create gravity in lab experiment

Graduate Can matter reach light speed with infinite energy and spacetime engineering?

Undergrad Is a uniform gravitational field a gravitational field?

Undergrad Constant Velocity: Does Time Dilation Occur?

Graduate Lorentz's Derivation: A Historical Exploration

Graduate Can a spacecraft near light speed plus a running person exceed light speed?

High School Can we travel faster than the speed of light?

Graduate Does the speed of light change in accelerating frames?

Graduate Is energy conserved in an expanding universe?

Graduate What makes a derivation standard?

Undergrad Speed of light relative to universe expansion?

Undergrad Why does a clock run slower near a gravitational field?

Graduate Photon beyond light speed?(?tachyon?)

Graduate Light under light gravitational force

Graduate Is expansion of space relative?