Obsolete term. This term is reserved for non-quantitative reference to physiological perception of light and is not recommended as a quantitative measure of the
radiance of an emitting device, e.g., a
lamp.
Source: PAC, 2007,
79, 293. (
Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 310 [
Terms] [
Paper]