Logarithmic scale
Synonym  Log scale 

Definition 
A value set that contains numerical values that are exponents or power (x) to base 10 10^x 
Description 
A nonlinear scale that contains a wide range of numerical values 
Value set 
Numerical values between negative infinity and positive infinity (∞ – ∞) Note: The low and high limits of reportable result ranges are defined for each measurand 
Example of values 

Mathematical operations 

Reference 

 arbitrary logarithmic number concentration
 pH