Kids watching beads drifting through fluids of different viscosities at the OIST Science Festival

The speed of the small black bead drastically changes as it moves down the cylinder through different liquids, each with a different viscosity. The final layer at the bottom has the highest viscosity, slowing the bead down to a snail’s pace.
Date:
01 February 2025
Credit:
Jeff Prine / OIST
Copyright OIST (Okinawa Institute of Science and Technology Graduate University, 沖縄科学技術大学院大学). Creative Commons Attribution 4.0 International License (CC BY 4.0).