Physics A-Level
Logarithmic brightness scale
What Logarithmic brightness scale means in Physics A-Level, as defined for AQA.
Definition of Logarithmic brightness scale
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Reference: AQA
A difference of five magnitudes corresponds to a brightness ratio of exactly 100, so each step is about 2.512 times in brightness.
Topics that use Logarithmic brightness scale
- 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 scale
- Luminosity
Using Logarithmic brightness scale in the exam
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