"In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between space and time."
A theory describing the relationship between space and time, and how they are affected by motion.
Inertial frames of reference: This refers to non-accelerating frames of reference which are used as a way to compare the motion of two or more objects.
Light and its properties: This includes the discussion of the properties of light, including speed, wavelength, and frequency, and how they relate to relativity.
Lorentz transformations: These are equations that relate the coordinates of an event in one inertial frame of reference to those in another.
Time dilation: The idea that time can appear to slow down for an object in motion relative to an observer, and how that affects our perception of time.
Length contraction: The idea that objects in motion can appear shorter than they actually are, due to the effects of motion on space and time.
Effects of gravity: The way that gravity affects the flow of time and the curvature of space, and the implications for special relativity.
Spacetime: The concept that space and time are intrinsically linked, and that they are part of a single entity known as spacetime.
Mass-energy equivalence: The formal definition of how mass and energy are related, as described in Einstein's famous equation E=mc^2.
Twin paradox: A thought experiment that demonstrates the effects of time dilation and how it can lead to one twin aging slower than the other in certain circumstances.
Relativistic Doppler effect: The way that the frequency of light or sound can change due to the motion of an object, as described by the principles of relativity.
The principle of relativity: The laws of physics remain the same for all inertial reference frames.
The constancy of the speed of light: The speed of light in a vacuum is always constant and independent of the relative motion of the observer and the light source.
Time dilation: Time appears to be slower for an object in motion relative to an observer than for the same object at rest.
Length contraction: The length of an object appears shorter to an observer in relative motion to the object than it does to an observer at rest.
Mass-energy equivalence: In STR, it is mathematically shown that mass and energy are interchangeable, as given by the famous equation E=mc2.
"In Albert Einstein's 1905 treatment, the theory is presented as being based on just two postulates."
"The laws of physics are invariant (identical) in all inertial frames of reference (that is, frames of reference with no acceleration)."
"The speed of light in vacuum is the same for all observers, regardless of the motion of the light source or observer."
"Frames of reference with no acceleration."
"Special relativity is a scientific theory of the relationship between space and time."
"Just two postulates."
"The laws of physics are invariant (identical) in all inertial frames of reference."
"The speed of light in vacuum is the same for all observers, regardless of the motion of the light source or observer."
"The speed of light in vacuum is the same for all observers, regardless of the motion of the light source or observer."
"The laws of physics are invariant (identical) in all inertial frames of reference (that is, frames of reference with no acceleration)."
"The speed of light in vacuum is the same for all observers, regardless of the motion of the light source or observer."
"The laws of physics are invariant (identical) in all inertial frames of reference."
"In Albert Einstein's 1905 treatment, the theory is presented as being based on just two postulates."
"The speed of light in vacuum is the same for all observers, regardless of the motion of the light source or observer."
"The laws of physics are invariant (identical) in all inertial frames of reference."
"The speed of light in vacuum is the same for all observers, regardless of the motion of the light source or observer."
"The special theory of relativity ... is a scientific theory of the relationship between space and time."
"The theory is presented as being based on just two postulates."
"The laws of physics are invariant (identical) in all inertial frames of reference."