Generating a tornado from the inside of a bottle
... This adapter makes it possible: Just fill a commercially available PET bottle with water - it will look especially nice with dyed water or little twinkling stars. Then unscrew the top of the adapter and join it with a second, empty bottle. Turn it around so that the full bottle is upside down and the two bottles adjoin in a circle. The water will run spirally from the upper bottle into the lower one and will trigger off the water tornado. The adapter can also be used for building hourglasses. Availability of colours depends on the number of items in stock.
Material: synthetic material
Measures: Ø 3 cm, 4.8 cm long
3 years and up
