The two display cases exhibit a group of minerals that are fluorescent under ultraviolet light. The minerals give off incredible fluorescent colours when the visitor tourns on one of the different switches, which producte different types of light, such as white light, long-wave (366nm) ultraviolet light and short-wave (254nm) ultraviolet light. Thus, the visitor can appreciate the different lighting effects produced by the minerals depending on the wavelength of the light received.
long-wave ultraviolet light
short wave ultraviolet light