Luminous Intensity 2 : Luminous Intensity in a given direction is the luminous flux emitted by a light source in an infinitesimal cone containing the given direction divided by the solid angle of that cone
Peter Milne and Kieran Sharp, ARRB Group, and Bob Ungers, consultant, Austroads Glossary of Terms (4th Ed.), Austroads Ltd., Sydney, NSW, Australia 2010. http://www.bicyclensw.org.au/files/u1/Austroads_Gl ossary_of_Terms_4th_edition.pdf (Road Trfc and Transp Sfty - Brit) {529}