On the south side of Boulder there is NCAR (National Center for Atmospheric Research).
Janet, her grandaughter, Averee and myself checked out the exhibits
they have there.
The 'Blue Sky' exhibit, lets visitors scatter light
to prove this saying is true.
It uses concentrated gelatin to produce enough scattering
in such a small length (less than a meter)
for you to see blue.
I looked quite intently through the maginfying glass
and could see the 'Blue Sky'.