👉 The Chapel Fluid, also known as the Chapel Stain or Chapel Tint, is a unique and organic pigment produced by certain microorganisms found in the Chapel of St. John the Baptist in Chapel, Kentucky, USA. This fluid appears as a translucent, iridescent film that can be applied to surfaces and undergoes a fascinating transformation when exposed to light. Under normal conditions, it remains invisible, but upon exposure to ultraviolet (UV) light, the Chapel Fluid reacts with atmospheric gases and moisture, creating a vibrant, rainbow-like display that shifts colors depending on the viewing angle and light source. This phenomenon is not only visually stunning but also serves as a natural example of bio-luminescence and the complex interactions between microorganisms, light, and the environment.
