- The Ultimate Speed Limit
- Faster than the Speed of Light? How do we know?
- Fast as Light
- Speed of Gravity
- Massless Particles Traveling at the Speed of Light
- Gravity, Acceleration, and Time Dilation
- Speed of time
- Matter and Energy
- mass and speed
- absolute acceleration?
- mass, spacetime, and gravitons
- speed limit
- black holes merging
- relativity and aging
- shape of universe
- E=mc^2 and conservation
- fast moving
- Photons not accelerating
- speed limit
- cosmic questions
- dispersing black holes?
- light’s weight
- relativity fundamentals
- speed of time?
- accelerating past c?
- accelerating near c
- cosmic tachyons?
- relative time
- gravity and speed
- photon gravity
- Matter and particle questions
- using E=mc^2
- dot going faster than c
- Heavy Light
- Matter and Energy
- Car traveling at the speed of light?
- Reaching the speed of light?
- Twin Paradox and slow clocks in fast reference frames
- Energy into Matter
- twin paradox
- gravity, matter, and curved spoaetime
- Doppler-shifted force carriers
- Twin paradox and General Relativity
- spinning faster than c?
- pie in the sky
- Electron beam in
- metaphysics
- fast photons
- speed limit
- speed limit
- Qu'est ce qui défini un systeme de référence?
- twin times
- time travel?
- (F)light and time
- gravitational grooves?
- infinite mass-energy?
- black hole energy
- Faster than the Speed of Light
- light speed
- Gravitational lensing in 3D
- gravity and energy
- leaving quickly
- relativistic merry-go-round
- relative speed
- E=mc^2
- light bending
- feeling gravity
- no rigid rods
- relativity and such
- relativity revisited
- How does relativity work?
- special relativity
- Cherenkov Radiation speed
- E=mc^2
- shuttling off
- How does light have momentum without mass?
- What is a dimension?
- Saying hello really fast
- quantum entanglement and the relativistic speed limit
- Some relativity questions
- relativity, quantum, etc.
- Lorentz transformed temperature
- why is Newtonian gravity inconsistent with fixed light speed
- waves from black holes
- black holes, gravity, and photon mass
- Michelson Morley
- slower time on the ocean floor
- who sees length contraction?
- How do we define communication?
- gravity and time
- detecting free-fall
- absolute rest?
- Time dilation with two ships
- does spacetime create 'stuff'?
- indestructible chains and black holes
- Mixing classical and relativistic equations
- does light have mass?
- spaceship gravity drive?
- graviton collisions
- time reversal near black hole?
- moving affects other things
- lines in Minkowski space
- time dilation and gravity
- relativistic electric and magnetic fields
- rigid rods and relativity
- Does a bullet exiting a gun at speeds approaching the velocity of light?
- moving inside a plane
- does the Earth stand still?
- photon's point of view
- Do gravitational waves undergo scattering?
- Can Gravitational Waves resonate with matter waves?
- meaning of gravity wave observation
- bending light and photon mass
- rigid rulers and the speed of light
- neutrinos faster than light?
- motionless objects
- energy flow near a mass
- neutrino energy-momentum relation
- Ehrenfest Paradox
- photon inertial mass
- Is gravity instantaneous?
- gravitational blue shift
- frame drag and orbits
- Galilean relativity
- light in different frames
- An observer is travelling at the speed of light
- Questions about relativity
- photon mass and momentum
- why is speed of light constant?
- seeing planets and stars now?
- Does our time slow down?
- uncertainty principle and speed of light
- Lorentz contraction paradox?
- light mass, momentum, energy
- length contraction and black holes
- how does mass convert to other energy?
- Why is a proton heavier than three quarks?
- observer-dependent current
- time, gravity and light
- deriving E=mc^2 via units?
- gravity around black holes
- light rays, energy and mass
- light, mass, and gravity
- general relativity, gravity, and light speed
- light speed in materials or gravity
- unitarity, information, and black holes
- are black holes hollow shells?
- E = mc^2 and the energy of light
- invariant relativistic facts
- why dark energy and dark matter?
- apparent relativistic times
- collision with light
- Is relativity based on light?
- light between moving objects
- Mass of the light
- Two photons at rest with respect to each other?
- moving a long pole instantly?
- antimatter explosions
- Slowing down (and speeding up?) a beam of light
- unstretchable strings?
- cosmological questions
- weight of energy
- length contraction and field patterns
- Does a black hole accelerate light?
- does energy cause gravity?
- Equations for quantum gravity
- relativistic mass and gravity
- Is the universe we live in the result of a super massive star explosion?
- mass of light?
- deriving speed of light?
- time dilation and astronomy
- Why believe relativity?
- Kinetic energy equal to rest mass energy
- relativistic mass increase
- radioactive recoil
- boson antiparticles
- twins again
- Higgs aether?
- video on magnetism and relativity
- Can entanglement be used to synchronize clocks outside the light cone?
- Is there mass associated with information transfer?
- speed and gravitational deflection
- relativistic clocks
- Relativistic vs rest mass in light
- gravitational waves from spin?
- Delayed Choice Quantum Erasure- Changing the Past?
- Lorentz frames for Bell inequality experiment
- local rates and temperature in twin paradox
- gravity and the speed of light
- How could Michelson-Morley work?
- Local Equivalence of Gravity and Accelerating Frames
- relativity is for real
- Michelson-Morley experiment
- Can you bend light with light?
- relativistic Doppler effect
- speed of gravity
- Why two turns for spin 1/2?
- ideal gas law vs. Higgs?
- Is the room moving?
- why different paths in gravity?
- how can hawking radiation escape?
- E=mc^2
- Interpreting Michelson-Morley
- moving mechanical clocks
- gravity and quantum mechanics
- fields bending spacetime
- Doppler shift formulas
- entanglement, quantum collapse, and relativity
- seeing yourself from behind
- adding many velocities in relativity
- electromagnetic waves
- Does gravity cause acceleration?
- gravitational precession
- mass of earth's magnetic field
- who needs gravitons?
- seeing the early universe
- Using entanglement to measure light's speed
- rotating sticks faster than light speed?
- magnetism and relativity
- constancy of mass in gravitational field
- transverse Doppler shift
- minutephysics on Higgs
- relativity and Newton's 3d law
- seasons and general relativity
- Higgs and relativity
- are there real inertial frames?
- falling into black hole
- Is rotation absolute?
- absolute rest?
- Doppler shift
- gravitational lensing of the sun
- relative speed of photons
- gravity wave Doppler shift?
- picturing curved space
- sources of gravitational field
- time dilation and signal times
- relativity and the cosmic microwave background
- what is the cosmological constant?
- colliding particles at right angles
- gravity from moving objects
- matter into energy
- relativitistic invariants
- Earth's acceleration and gravity
- E=hf
- Relativistic transformations of electric and magnetic fields
- gravitomagnetism
- relativisitic falling
- light in an accelerating frame
- gravitomagnetic force
- dilated time to reach 0.99c
- twins in a finite universe
- twin paradox: relativity isn't kidding
- space isotropy in gravity
- How does Shapiro delay work?
- clocks in relativity
- Magnetic field mass
- Why expect a graviton?
- Sun's gravitational redshift
- light's sonic boom
- Inverse Lorentz transforms
- cosmic inflation and relativistic transforms
- constant speed of light
- Are there massless charged particles?
- Is the Higgs field like molasses?
- How old is the cosmic background radiation?
- relativity and Newton's third law
- speed of light from moving object
- geodesic paths in spacetime
- Curved spacetime
- Lorentz contraction and current
- General Relativistic time effects
- matter/antimatter asymmetry
- Is reality real? Or relativity?
- Higgs and photons?
- 'Proving' the constancy of the speed of light
- Angular momentum of a photon
- proving E=mc^2
- Does time exist?
- relativity and weight
- accelerating light?
- photon acceleration?
- photon mass?
- mass from quantum effects
- avoiding singularities
- relativity questions
- gravity and time
- time dilation in a mine
- 2-D sheet universes
- Special vs. General Relativity
- Can a photon gain mass?
- CERN neutrinos: Do we need to rewrite Einstein?
- faster than light neutrinos?
- relativity on a train
- What is relativistic potential energy?
- What does gravity do to clocks?
- Big Bang Baloney
- mass and speed
- Inertia of radiant energy
- Evidence for relativistic time dilation
- Zeno at the edge of a black hole
- gravity without fields?
- mass and speed
- What's the geometry of the universe?
- momentum kick from flashlight
- travel to future?
- doing chemistry via time dilation
- black hole physics
- moving weights
- limits on light density
- big extra dimensions
- time dilation
- Relativistic velocity addition
- How Time Dilation Occurs
- Gravitational effects on light
- absolutely relativistic baloney
- relativistic dynamics
- time dilation, meaning of time
- electromagnetic waves and relativity
- speed of light
- time at the edge of a black hole
- Why can nothing exceed the speed of light?
- racing light
- Momentum and energy of photons (and other particles)
- limits of General Relativity
- Gravity bending light
- postulates of special relativity
- energy conservation in General Relativity
- Relative speeds and mediums
- General Relativity paradox?
- photons, mass, gravity, light, rest mass, invariant mass, energy, momentum
- intuition on quantum and relativity
- adding relative speeds
- distance seen by light?
- Why string theory?
- why constant speed of light
- electric and magnetic transforms
- relativity of time
- gravity and age of sun
- Speed of gravity and light?
- curved space and acceleration
- Adding velocities, relativistically
- distances in different universes
- photon energy
- magnetism and relativity
- spinning black holes
- Is string theory consistent with relativity?
- do stringy dimensions violate Special Relativity?
- Can solid matter travel as fast as light?
- strings and quantum
- non-linear curvature
- clocks
- simultaneity
- time and purpose
- time dimension
- equivalence principle
- speed of light in a bend
- photon mass again
- space constituents
- light and black holes
- m-> E conversion
- material speed limits
- gravity basics
- ontology
- asymmetrical twins
- relative views
- twin gravity
- Buying the Einstein theory of time?
- Lorentz transform
- light mass
- Why does an electron have spin 1/2 ?
- Electrons and speed of light?
- spinning earth transport?
- Event horizon of black holes
- photon mass
- relativistic aging
- proper work
- speed of gravity
- basics
- relativistic points of view
- relativity
- inertia
- inertia
- variable pi?
- conservation of energy: "law" or "theory"
- building blocks of space
- relativity and light
- E=mc^2
- equivalence principle
- vacuum zero-point fluctuations
- E=mc^2
- relativity and orbits
- gravity and expansion
- time and space
- black holes filling in?
- E=mc^2
- incompressible rods
- twins and cosmos
- relative speed
- H emission spectrum
- Seeing the invisible?
- black hole gravity
- moving universe?
- EPR timing
- leaving this existence
- special relativity at more than c
- general relativity: too hard for us
- not quite relativity
- quantum frequencies: photons, gravitons, etc.
- why relativity?