What is ISO 80000-7 - Quantities and units for light and radiation about?
Multiple systems of quantities developed across the world over time. Unified systems can facilitate research and communication within the scientific community, doing away with the need for conversion factors.
ISO 80000 comprises a series of international standards introducing the International System of Quantities (ISQ). The guidelines of the ISO 80000 family of standards specify the use of physical quantities and units of measurement, along with the related formulas and units, in scientific and educational documents.
ISO 80000-7 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.
Who is ISO 80000-7 - Quantities and units for light and radiation for?
ISO 80000-7 on quantities and units for light and radiation has applications for education and research in the fields of:
- Physics
- Chemistry
- Earth science
- Astronomy
- Mathematics
- Technology
- Biology
Why should you use ISO 80000-7 - Quantities and units for light and radiation?
ISO 80000-7 contains a selection of quantities pertaining to light and other electromagnetic radiation. Radiometric quantities relating to radiation in general may be useful for the whole range of electromagnetic radiations, whereas photometric quantities pertain only to visible radiation.
The tables of quantities and units in ISO 80000-7 are arranged so that the quantities are presented on the left-hand pages and the units on the corresponding right-hand pages.
The guidelines of ISO 80000-7 provide you with required quantities and units of mechanics for research and educational use.
What’s changed since the last update?
This first edition of BS ISO 80000-7 supersedes the third edition of ISO 31-6:1992. BS ISO 80000-7 includes some technical and editorial changes with respect to ISO 31-6:1992. These include:
- The presentation of numerical statements has been changed
- 0.5.3 Photopic quantities, 0.5.4 Scotopic quantities and 0.5.5 Values have been added
- The normative references have been changed
- New items have been added and denoted by dash (see 0.1)
- The order and the definitions of luminous terms have been changed to bring the presentation more in line with the International Electrotechnical Vocabulary