Bubble Race exhibit involves three acrylic tubes filled with different liquids with varying viscosity levels. When visitors activate the mechanical pump to push air through a tube, they observe the differences between liquids in terms of bubble behaviors, i.e. bubble goes faster in the liquid with lower viscosity, and vice versa.
https://sebaexhibits.com/wp-content/uploads/2020/12/BUBBLE-RACE.mp4[foogallery id="224126"]