Two points are randomly selected inside a three-dimensional euclidian cube.
The value l of their separation lies somewhere between zero and the length of a
diagonal of the cube. The probability density P(l) of the separation is
obtained analytically. Also a Monte Carlo computer simulation is performed,
showing good agreement with the formulas obtained.
Preprint
Comment: 7 pages, 5 figures
Subjects: Mathematics - General Mathematics; Astrophysics