IPC Subgroup
G01J 1/5 using change in colour of an indicator, e.g. actinometer
Introduced: September 1968
Last revised: January 2006
Full Title
Photometry, e.g. photographic exposure meter > using chemical effects > using change in colour of an indicator, e.g. actinometer
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
Related Keywords
ACTINOMETERS