International Organization for Standardization (ISO)
Latest
ISO 80000-7:2019
Scope
This document gives names, symbols, definitions and units for quantities used for light and optical radiation in the wavelength range of approximately 1 nm to 1 mm. Where appropriate, conversion factors are also given.
ISO 80000-7:2019 history
2019ISO 80000-7:2019 Quantities and units — Part 7: Light and radiation