Wikipedia article describes the phenomena, or contact me if you want to do some film photography and I would be glad to help.
Film: Fomapan 100 Classic.
Camera: Fuji GW690II with 90mm lens.
Development: Xtol by Praus Productions, Rochester, NY
Scanning: Minolta Scan Multi using SilverFast Ai software, 2820 dpi.
Resize for web display: ACDSee Pro 2.5.