Physics A-Level
Baseline
What Baseline means in Physics A-Level, as defined for AQA, OCR.
Definitions of Baseline
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Reference: AQA
The unobscured stellar flux, from which a transit appears as a temporary decrease below it.
Equal to 1 astronomical unit, the Earth–Sun distance, with observations six months apart.
Topics that use Baseline
- Detection of exoplanets (A-level only) (AQA A-Level)
- Cosmology (OCR A-Level)
Related terms
- Age of the universe
- Angular separation
- Astronomical distance units
- Big Bang nucleosynthesis
- Big Bang theory
- Cosmic microwave background
- Cosmic microwave background radiation
- Cosmological redshift
Using Baseline in the exam
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