Physics A-Level
Invariance of the speed of light in free space
What Invariance of the speed of light in free space means in Physics A-Level, as defined for AQA.
Definition of Invariance of the speed of light in free space
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Reference: AQA
Every inertial observer measures the same value c, regardless of the motion of the source or the observer.
Topics that use Invariance of the speed of light in free space
- Einstein’s theory of special relativity (A-level only) (AQA A-Level)
Related terms
- Apparent forces
- Equivalence of all inertial frames
- Inertial frame of reference
- Consequences for simultaneity, time and length
- Non-inertial frame
- Rejection of absolute space and time
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