Stern's formula in Lekner & Dorf (1988) gives reflectance for alfa = 90 degrees
Arguments
- alfa
numeric. Maximum incidence solid angle, in degrees.
- nr
numeric. Leaf refractive index.
Value
angles: average transmissivity of a dielectric surface.
Author
Christiaan van der Tol (Original version in Matlab)
Carlos Camino (Ported version into R)
Examples
tav(59, 1.4)
#> [1] 0.9641415