Physics A-Level
Parallax and the parsec
What Parallax and the parsec means in Physics A-Level, as defined for OCR.
Definition of Parallax and the parsec
Check what you remember
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Reference: OCR
The parsec is a cosmological distance unit defined using parallax: the distance at which one astronomical unit subtends an angle of one arcsecond.
Topics that use Parallax and the parsec
- 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 Parallax and the parsec in the exam
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