<we><edit> <!-- questions and answers -->
special-relativity
terminology
classical-mechanics
mathematical-physics
radiation
electric-current
charge
optics
mass
field-theory
acoustics
quantum-entanglement
collision
atomic-physics
electromagnetism
newtonian-gravity
electricity
cosmology
electrons
reference-frames
tensor-calculus
electrostatics
harmonic-oscillator
condensed-matter
fluid-dynamics
special-relativity
How to convert pressure into wind speed
special-relativity
Length contraction and time dilation
special-relativity
Confusion with length contraction
special-relativity
Proof of Lorentz contraction?
special-relativity
Does light travel faster if fired in the direction of Earth's rotation as opposed to against it?
special-relativity
rotational-dynamics
speed-of-light
reference-frames
faster-than-light
Special Relativity paradox of bridge and bus
homework-and-exercises
special-relativity
reference-frames
What happens when two objects move at relative speeds over $c$?
special-relativity
speed-of-light
velocity
inertial-frames
faster-than-light
The Time Freezing Room - Theoretically possible?
general-relativity
special-relativity
spacetime
time-dilation
time-travel
Relativity and how speed affects passage of time
special-relativity
time
speed
galilean-relativity
Is the non-existence of a rest frame for photon in vacuum a consequence of the second postulate?
special-relativity
photons
speed-of-light
reference-frames
inertial-frames
Are Lorentz transformations a direct consequence of finiteness of signal speed?
special-relativity
speed-of-light
inertial-frames
lorentz-symmetry
causality
How is Time Dilation both Symmetrical and Non-Symmetrical?
special-relativity
Relative velocity of light in a moving glass medium
homework-and-exercises
special-relativity
Relativity in Light Communication
homework-and-exercises
special-relativity
speed-of-light
velocity
time-dilation
How do we know that the laws of physics are invariant in all inertial frames?
special-relativity
inertial-frames
galilean-relativity
Do we know why there is a speed limit in our universe?
special-relativity
speed-of-light
How many different versions of special relativity are there?
special-relativity
reference-frames
Can there be energy without mass?
special-relativity
photons
mass-energy
matter
Can energy exist without matter?
special-relativity
mass-energy
matter
Intution in special relativity
special-relativity
classical-electrodynamics
Use of step function to show that total charge is Lorentz invariant if the four-gradient of current density is zero
electromagnetism
special-relativity
classical-electrodynamics
invariants
How does QFT help with entanglement?
quantum-mechanics
quantum-field-theory
special-relativity
quantum-entanglement
Is $Y: (t,x,y,z)\to(t,x,-y,z)$ a Lorentz transformation?
special-relativity
group-theory
discrete
$E=mc^2$ tells us that everything has energy. So why can't we use anything as a battery/power source?
special-relativity
energy
mass-energy
antimatter
batteries
Lagrangian of a Relativistic Harmonic Oscillator
special-relativity
lagrangian-formalism
harmonic-oscillator
Is the matrix Lorentz transform equivalent to statements of time dilation, length contraction and effective mass?
special-relativity
time-dilation
At what speed was the positron moving in the Anderson experiment?
homework-and-exercises
special-relativity
antimatter
elementary-particles
Teleportation and boosted observer, special relativity
quantum-mechanics
special-relativity
quantum-information
quantum-entanglement
quantum-teleportation
If tachyons existed, would we notice them?
special-relativity
tachyon
Problem with understanding time dilation (moving clocks can run faster?)
special-relativity
time-dilation
Relativistic relative velocity
homework-and-exercises
special-relativity
Meaning of Negative time in Special Relativity
special-relativity
How is instantaneous action at a distance governed by a specific frame of reference?
quantum-mechanics
special-relativity
quantum-entanglement
Understanding the Headlight/Beaming effect in Special Relativity
special-relativity
Curvature and length contraction paradox
general-relativity
special-relativity
metric-tensor
coordinate-systems
curvature
Perceived direction of light emitted in moving reference frame
special-relativity
reference-frames
observers
thought-experiment
In what sense is BMS a symmetry? (What is kept invariant?)
special-relativity
lorentz-symmetry
poincare-symmetry
Relativistic speed/energy relation. Is this correct?
particle-physics
special-relativity
How does the speed of an object affect its relativistic mass?
special-relativity
mass
mass-energy
speed
rod shortening in special relativity
special-relativity
Sakurai"s Comment Anti-particle in Klein-Gordon equation: Reversing momentum and Moving backward in time
quantum-mechanics
quantum-field-theory
special-relativity
time
antimatter
Relativity and "light years"
special-relativity
reference-frames
relativity
observers
metric-space
Redo the experiment 'Reversal of thermodynamic arrow of time'
quantum-mechanics
thermodynamics
special-relativity
quantum-information
arrow-of-time
Relative time between space ships and the earth
homework-and-exercises
special-relativity
spacetime
time
On the homomorphism of the Lorentz algebra representation (1/2, 0)
special-relativity
representation-theory
lie-algebra
Problem in deriving elements of Lorentz Group
special-relativity
linear-algebra
classical-field-theory
Are the components of 4-vectors the physically measured quantities?
special-relativity
vectors
observables
How to say "speed of light is constant in all frames" in QFT?
quantum-field-theory
special-relativity
reference-frames
inertial-frames
observers
Conceptual intuition in special relativity
special-relativity
time-dilation
Compton Scattering Assumption: $p^2=m^2$ for electron and $k^2=0$ for photon?
special-relativity
kinematics
scattering
Minimum frequency required to produce a pair of electron-positron from 2 photons
quantum-mechanics
homework-and-exercises
special-relativity
Lorentz-invariant phase space for 2->2 scattering
quantum-field-theory
special-relativity
kinematics
integration
lorentz-symmetry
Finding the $y$ component for a particle in the velocity addition formula
homework-and-exercises
special-relativity
velocity
inertial-frames
Doubt with Relativistic Lagrangian Expression
special-relativity
energy
lagrangian-formalism
hamiltonian-formalism
Why don't people use Hamilton's equations for a relativistic free charged particle?
special-relativity
hamiltonian-formalism
field-theory
classical-field-theory
point-particles
Can an Object Look as Dense as a Black Hole in Special Relativity?
general-relativity
special-relativity
Relativity of simultaneity - under what conditions would two events happen simultaneously for frames $S$ and $S'$ when $S'$ is moving relative to $S$?
homework-and-exercises
special-relativity
relative-motion
thought-experiment
Why are objects at rest in motion through spacetime at the speed of light?
special-relativity
spacetime
speed-of-light
time
kinematics
Doubt in Lorentz Transformation
homework-and-exercises
special-relativity
tensor-calculus
notation
covariance
Relation between $(0,1/2)$ and $(1/2,0)$ representations of $SL(2,\mathbb{C})$
special-relativity
group-theory
representation-theory
group-representations
lorentz-symmetry
Distance in relativistic circular motion in invariant spacetime
special-relativity
spacetime
reference-frames
rotation
A spool in Einstein's theory of special relativity
special-relativity
classical-mechanics
inertial-frames
time-dilation
observers
Lorentz Transformations And Space-time origins
special-relativity
inertial-frames
lorentz-symmetry
poincare-symmetry
Doppler effect equation derivation
special-relativity
doppler-effect
Simple example for "dynamic mass moment"?
special-relativity
angular-momentum
momentum
Weyl Spinors and Lorentz Invariance
special-relativity
field-theory
lorentz-symmetry
spinors
Time dilation for increasing industrial output and life expectancy
special-relativity
time-dilation
Special Relativity: Transforming Maxwell's equations
special-relativity
maxwell-equations
Special relativity - loss of simultaneity - Is that real?
special-relativity
spacetime
inertial-frames
coordinate-systems
Time dilation and uniform motion
special-relativity
Why does Doppler effect occur?
special-relativity
optics
doppler-effect
What is the relationship between an event happening and "seeing" an event happen?
general-relativity
special-relativity
black-holes
event-horizon
Einstein light clock?
special-relativity
Orthochronous Lorentz Transformations And Their Physical Meaning
special-relativity
spacetime
group-theory
lorentz-symmetry
parity
Does angular velocity have an upper bound?
special-relativity
speed-of-light
Solution of the Dirac equation by Pauli four-vector
special-relativity
dirac-equation
spinors
dirac-matrices
Is the total cross section a Lorentz Invariant?
quantum-field-theory
special-relativity
scattering
scattering-cross-section
lorentz-symmetry
Acceleration In SR
homework-and-exercises
special-relativity
Length contraction and temperature (paradox?)
special-relativity
temperature
Relation of Magnetic field and electric field
homework-and-exercises
electromagnetism
special-relativity
Lorentz contraction and magnetism
electromagnetism
special-relativity
Paradox of Speed Limit in Universe
special-relativity
Relativity of Simultaneity - Issue with the train car example
special-relativity
Special relativity and spinning tires
special-relativity
time-dilation
observers
Twin paradox Doppler shift explanation
special-relativity
doppler-effect
What is the meaning of a (1/2, 1/2) representation?
special-relativity
group-representations
Causality Assumption in Special Relativity
special-relativity
Which reference frame decides the relative velocity of two reference frames?
homework-and-exercises
special-relativity
inertial-frames
Does velocities add up to each other in Lorentz transformations?
special-relativity
velocity
inertial-frames
What decides that "it (mass energy) " is going to become mass or energy?
special-relativity
energy
mass
mass-energy
Refraction vs Special Relativity
special-relativity
refraction
Calculating the motion of an object under a constant force in a relativistic context
special-relativity
acceleration
time-dilation
Universal reference frame based on the speed of light/special relativity
special-relativity
speed-of-light
reference-frames
inertial-frames
Why does using Lorentz tranformations lead me to a result that doesn't agree with Einstein velocity addition?
special-relativity
Relativity Problem: Time
general-relativity
special-relativity
Books on the experimental evidence for Special Relativity?
special-relativity
experimental-physics
resource-recommendations
history
How to expand a Lorentz transformation to first order in $\beta$?
homework-and-exercises
special-relativity
lorentz-symmetry
Distance formula in Euclidean space vs. Spacetime Interval - why is one Pythagorean and one not?
special-relativity
metric-tensor
invariants
What will a photon say about the motion of other photon?
general-relativity
special-relativity
photons
speed-of-light
Why isn't the relative y-velocity in this problem $.8c$?
homework-and-exercises
special-relativity
velocity