Physics A-Level
Naked-eye visibility limit
What Naked-eye visibility limit means in Physics A-Level, as defined for AQA.
Definition of Naked-eye visibility limit
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Reference: AQA
The faint limit of naked-eye visibility is apparent magnitude 6, the dimmest stars visible to the unaided eye under good dark-sky conditions.
Topics that use Naked-eye visibility limit
- Classification by luminosity (A-level only) (AQA A-Level)
Related terms
- Apparent magnitude
- Apparent versus absolute magnitude
- Brightness
- Intensity of radiation received
- Irradiance
- Logarithmic brightness ratio
- Logarithmic brightness scale
- Logarithmic scale
Using Naked-eye visibility limit in the exam
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