Physics A-Level
Recombination
What Recombination means in Physics A-Level, as defined for OCR.
Definition of Recombination
Check what you remember
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Reference: OCR
After roughly 380 000 years the universe cooled enough for electrons and nuclei to combine into neutral atoms, so radiation could travel freely.
Topics that use Recombination
- Cosmology (OCR A-Level)
Related terms
- Age of the universe
- Astronomical distance units
- Baseline
- Big Bang nucleosynthesis
- Big Bang theory
- Cosmic microwave background
- Cosmic microwave background radiation
- Cosmological redshift
Using Recombination in the exam
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