WOW! Thermodynamics & Pressure Differentials! Enjoy This classic physics demonstration in a handy duck shape. This thirsty bird perpetually bobs long as it has a glass of water to dunk in.
Instructions on box.
2x7"inches.
This is not a toy.
Ages 14+
WOW! Thermodynamics & Pressure Differentials! Enjoy This classic physics demonstration in a handy duck shape. This thirsty bird perpetually bobs long as it has a glass of water to dunk in.
Instructions on box.
2x7"inches.
This is not a toy.
Ages 14+