Metric and quantities for horticulture lighting

Presentation of Peter Blattner, CIE President, the Director of Division 2, Switzerland.
The presentation was made during International scientific and technical greenhouses lighting conference 9 September 2019 in Moscow.
The Conference is funded by the Ministry of Science and Higher Education of the Russian Federation (project “Comprehensive studies in the plant photoculture and creation of high-effective LED phytoirradiators for increase of energy efficiency of industrial greenhouses”). Contract on granting subsidy #14.576.21.0099 dated 9/26/2017. Contract ID 0000000007417PD20002. Project ID RFMEFI57617X0099