mutual exchange coefficient between two surfaces S1 and S1, when the radiance or luminance of S1 (or S2) is the same at all points and for all directions

light.

coeficiente de troca entre duas superfícies S1 e S2 quando a luminância energética ou luminosa de S1 ou S2 é a mesma em todos os pontos e me todas as direcções; mútua

exchange coefficient

: 4 phrases in 3 subjects

Earth sciences	2
Electronics	1
Lighting other than cinema	1