Get You Science On: Frozen Shadows

Katie shows us how to build Frozen Shadows. Put your hands or other objects on the glow paper, and engage the flash. Check out your awesome Frozen Shadows!

What’s Going On?

Glow in the dark paper is phosphorescent. It gets energy from light, and gives that energy back slowly over time by giving off its own light. Since it’s glowing greenish-yellow, the paper requires light with a higher energy than this. Light on the blue end of the rainbow (blue and violet) works, but even better is ultraviolet (UV) light! Your hands and plastic filters block out UV light, and prevent areas of the paper from getting energized!

Materials

Phosphorescent Paper (we used Inkjet Glow In The Dark Adhesive Paper http://goo.gl/FxCsQ1)
Bright light source (such as a camera flash)