Logarithmic scale
What Logarithmic scale means in Physics A-Level, as defined for AQA.
Definitions of Logarithmic scale
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Reference: AQA
The nature of the magnitude scale, used because human perception is not a reliable linear measure, replacing subjective judgement with a calibrated numerical scale.
A scale that compresses the very wide range of sound intensities, so that equal ratios of intensity correspond to equal differences in decibels.
Topics that use Logarithmic scale
- Classification by luminosity (A-level only) (AQA A-Level)
- Sensitivity and frequency response (A-level only) (AQA A-Level)
Related terms
- Apparent magnitude
- Apparent versus absolute magnitude
- Brightness
- Equal loudness curve
- Intensity
- Intensity of radiation received
- Inverse-square relationship
- Irradiance
Using Logarithmic scale in the exam
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