Irradiance
Irradiance
Quotient of the radiant heat flux incident on an infinitesimal element of surface containing the point, by area of that element
ISO 5658-2:2006/Amd.1:2011(en)
ISO 5658-2:2006(en) Reaction to fire tests — Spread of flame — Part 2: Lateral spread on building and transport products in vertical configuration