I wanted to teach my kids the “Uncertainty Principal.” And I had a small box, a Geiger counter and a bit of radioactive substance. I got some Hydrochloric acid. With a bit of tinkering and I had my own Schrödinger’s Cat Box. Now I only needed a cat! Please Register or Log in to view the hidden image! Even though my cat "Peter" volunteered for this experiment I felt bad. He was still alive at the end, don't worry. But it was freaky there for a while when the lid was closed and he was both alive and dead. Please Register or Log in to view the hidden image! But my kids learned so much about physics.