Introducing the Scientific Hand Boilers – a 6.5" x 2" glass sculpture that's not just art, but a fun and unique trick! this piece features two globes connected by an artful twist. Inside, you'll find one of four different color liquids. The trick? Hold one globe in the palm of your hand, and the liquid will defy gravity, climbing up the tube into the other globe. Keep it long enough, and you'll even see the liquid "bubble" inside.

** It comes in four distinct styles