Physics A-Level
Parsec
What Parsec means in Physics A-Level, as defined for AQA, OCR.
Definitions of Parsec
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Reference: AQA
The distance at which 1 astronomical unit subtends an angle of 1 arcsecond, defined geometrically and linked to the parallax method.
The distance at which a radius of 1 AU subtends an angle of 1 arcsecond.
Topics that use Parsec
- Absolute magnitude, M (A-level only) (AQA A-Level)
- Point and spherical masses (OCR A-Level)
Related terms
- Critical damping
- Direction of gravitational force
- Escape velocity
- Field
- Field strength and line spacing
- Geostationary orbit
- Gravitational field outside and inside a sphere
- Gravitational field strength
Using Parsec in the exam
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