A bright flash of light illuminates a phosphorescent wall—imprinting temporary shadows that capture a moment in time.
A strobe light and a giant phosphorescent screen offer endless posing possibilities in this popular and long-lived exhibit favorite.
The shadow-catching phosphorescent material on this wall is the same as you’ve probably seen in various “glow-in-the-dark” products. Energy from incoming light gets absorbed in this material in the form of excited electrons, that is, electrons raised to a higher energy state. As these electrons gradually de-excite, they release their energy as a visible glow.