Frozen Shadow

While roaming around the displays, we ended up on a small, dark room covered with black curtains. We found out that that exhibit is called "FROZEN SHADOW". We were familiar with this one because we also saw it on our previous science fair. Many students were entertained by this one. Some even gotten into arguements if who will try first.

This exhibit is fun because of it's special effect. Someone pressed the button and we went near the wall. We made a funny pose while waiting for the flash and then stepped away from the wall. And then, do you know what happened?

Our shadow was still on the wall. That was very interesting for us. The wall is painted using glow-in-the-dark pigments and white paint binder. The pigments or phosphors absorb light and continue to glow for 2 to 3 minutes even after the light switches off.