Special relativity

speed of electromagnetic waves in vacuum

physical theory of measurement in an inertial frame of reference proposed in 1905 by Albert Einstein

physical law relating mass to energy

measured time difference as explained by relativity theory

space-time coordinate transformation that conserves the form of Maxwell’s equations

electromagnetic phenomenon

thought experiment in special relativity

mathematical space setting which eases explanation of special relativity

geometric space with four dimensions

the contraction of length in the direction of propagation in special relativity

factor 1∕√(1−𝑣²∕𝑐²) in special relativity expressing how much the measurements of time, length etc. change for a moving object

relativistic wave equation in quantum mechanics

graph of space and time in special relativity

Loss of angular momentum in orbiting dust grains due to stellar radiation

quantum particle having zero rest mass (zero invariant or intrinsic mass)

concept that distant simultaneity is not absolute, but depends on the observer's reference frame

Theories of quantum chemistry explained via relativistic mechanics

concept that incorporates the general understandings from the laws of motion of special relativity along with its concept of mass–energy equivalence

equation used in relativistic physics

equivalence in relativistic physics of observation with respect to change of (inertial) reference frame

velocity of an object or observer B in the rest frame of another object or observer A

aspect of history

Lie group of Lorentz transformations

thought experiment in special relativity

thumb|upright=0.85|Rapidity is the value of for velocity and speed of light

Scientific phenomenon

speed at which relativistic effects become significant

non-mainstream theory in physics remaining to be validated

theoretical upper limit on the energy of cosmic ray protons

In abstract algebra, the biquaternions are the numbers , where , and are complex numbers, or variants thereof, and the elements of multiply as in the quaternion group and commute with their coefficients. There are three types of biquaternions corresponding to complex numbers and the variations thereof: Biquaternions when the coefficients are complex numbers. Split-biquaternions when the coefficients are split-complex numbers. Dual quaternions when the coefficients are dual numbers.

defunct theory of electromagnetism

elementary particle which moves close to the speed of light

ways of writing the laws of classical electromagnetism in a form that is manifestly invariant under Lorentz transformations, in the formalism of special relativity using rectilinear inertial coordinate systems

in special relativity, the visual distortion of the appearance of a passing object moving at relativistic speeds

physical theory in which there is not only a maximum velocity (as in special relativity), but also a maximum energy scale and minimum length scale

competing theory

In physics, superradiance, superradiant scattering or superradiation, is the radiation enhancement effects in several contexts including quantum mechanics, astrophysics and relativity.

line segment of infinitesimally small length

very close to the speed of light

physics thought experiment

philosophical argument based on the theory of relativity

experiments probing the accuracy of special relativity's predictions

hypothetical device in theoretical physics that could be used to send signals into one's own past

relativistic correction that relates the angular velocity of the spin of a particle following a curvilinear orbit to the angular velocity of the orbital motion

physical phenomenon in electromagnetic field theory

relationship between relativity and pre-quantum electromagnetism

properties underlying modern physics

scale of time

frame of reference in which a specified particle is at rest

Concept in physics

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motion of an object with constant proper acceleration in special relativity

Physical phenomenon of spin-polarization

representation of the symmetry group of spacetime in special relativity

the distortion of light at high velocities

system of electromagnetic units

tests confirming special relativity

Tests of special relativity

In physics, specifically for special relativity and general relativity, a four-tensor is an abbreviation for a tensor in a four-dimensional spacetime.

stream of elections moving at relativistic speeds