Hand "Boiler" - Super Fast (TEDCO) physics also known as Class IIIA

also known as Class IIIA or 3R laser

Perfect for classrooms and science projects

you'll see the colourful liquid shoot up the twisting

complete instructions and science learning guide

Hand "Boiler" - Super Fast (TEDCO) physics also known as Class IIIAIts a classic science toy that uses your body heat to make the liquid in the glass ornament bubble just as if it were boiling. It works amazingly fast (the clip you see is actual speed!). When you place your hand around the large glass bulb on the bottom of the Hand Boiler, you'll see the colourful liquid shoot up the twisting, turning tube. Once at the top, the coloured liquid will begin to bubble rapidly just as if it were boiling! This is a classic