Everything You Never Knew You Wanted to Know About Berlin
Spotted in Kreuzberg 36.
Luminol is a luminescent chemical used to detect blood traces on a crime scene and it emits blue glow in the darkened room. The effect does not last – after more less 30 seconds the glow is gone.
It can be captured in a photo and preserved, however, if long-exposure is used.
I wonder if the feeling that inspired the heart-spayer here lasted longer…