Glory & Brocken
Spectre Shadow imaged
by John Saunders near Maungahuka Peak, Tararua Range, New Zealand on
25th April '08.
©John Saunders, shown with permission.
Multiringed glories directly
opposite the sun are formed when the sun rays break through
thin mist. Tiny mist droplets diffract the
light and some is directed straight back sunwards.
That is all very well, but there is no simple explanation of just how this happens. Mie-Lorentz scattering theory derived without
approximation from electromagnetic theory predicts glories excellently.
You can do so yourself with IRIS. But that remains somehow unsatisfying
because the 'how' is missing.
Spectre, is altogether more simple. It is the long shadow
of the photographer projecting tunnel-like through the mist.