Physics A-Level
Definition of the parsec
What Definition of the parsec means in Physics A-Level, as defined for OCR.
Definition of Definition of the parsec
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Reference: OCR
One parsec is defined as the distance at which one astronomical unit subtends an angle of one second of arc, and 1 pc ≈ 3.09 × 10¹⁶ m, about 3.26 light-years.
Topics that use Definition of 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 Definition of the parsec in the exam
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