Converter
length / optical attenuation
meteorological optical range
exact
- Record
- M653
- Definition quality
- Standardized
- Conversion mode
- contextual
- Calculator
- Context required
Definition
MOR is defined by attenuation of specified luminous flux to 5% over a path length.
Modern use
Modern use is context-dependent and varies by region or measurement system.
Sources & evidence
Source tier — · confidence high