Physics A-Level
Cosmological microwave background radiation
What Cosmological microwave background radiation means in Physics A-Level, as defined for AQA.
Definition of Cosmological microwave background radiation
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Reference: AQA
Thermal radiation at about 2.7 K filling all space, relic radiation from when the early Universe became transparent.
Topics that use Cosmological microwave background radiation
- Hubble's law (A-level only) (AQA A-Level)
Related terms
- Age of the universe
- Big Bang nucleosynthesis
- Cosmological redshift
- Hubble's law
- Redshift
- Expansion of the Universe
Using Cosmological microwave background radiation in the exam
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