Figure 3
From: There’s plenty of light at the bottom: statistics of photon penetration depth in random media
Probability density function f(z|t) versus the depth z for different times t, calculated exploiting both DE (solid lines) and MC (dashed lines).
The figure pertains to a semi-infinite medium (a) and to a slab with s0 = 20 mm (b), with μa = 0, 
and nint = next = 1.4.
